hi ie ¥ SMITHSONIAN MISCELLANEOUS COLLECTIONS VOLUME 127 (IN TWO PARTS), PART II Charles BD. and Mary Waux CHalcott Research Fund CHAZYAN AND RELATED BRACHTOPODS PART dlyPLATES (WitH 269 PLATES) By G. ARTHUR COOPER Curator of Invertebrate Paleontology and Paleobotany United States National Museum (PusricaTion 4253) CITY OF WASHINGTON PUBLISHED BY THE SMITHSONIAN INSTITUTION JUNE 12, 1956 THE LORD BALTIMORE PRESS, INC. BALTIMORE, MD., U. S. A. Charles DB. and Mary Waux Walcott Research Fund CHAZYAN AND RELATED BRACHIOPODS: bBo ado oa gk Les Wyble) By G. ARTHUR COOPER Curator of Invertebrate Paleontology and Paleobotany, United States National Musuem PXPEANATION OF PLATES (Page numbers refer to text, Part I.) PLATE I LINGULELLA, OBOLUS, PSEUDOLINGULA, WESTONIA . Westoma clathrate’ (Winchell and Schuchert)...............cccccssencccccccscs (1) Exterior of pedicle valve, showing wavy parallel lines, X 8, paratype, 45546a; (2) exterior of brachial valve, X 6, lectotype, 45546b. Decorah formation (Guttenberg member—Rhinidictya bed), St. Paul, Minn. DUET ESE OMUE SER Mv scts) iu eu: Yaia race's wa ei htei alias a) alu aie Wate folm alg oelaia ie «6/6 dleisieraieie vale dpalacaicale mete (3) Exterior of a pedicle valve showing a chevronlike ornamentation, 6, figured specimen, 116781a. Whitesburg formation just above the Fetzer formation, 24 miles southeast of Whitesburg, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. . Lingulella virginiensis Cooper, New SPeCi€S........ccccccccccccccceccccces sevens (4, 5) Respectively exterior views, X 4, of the brachial and pedicle valves of the holotype, 109296, showing difference in ornamentation of the valves. “Ottosee shale’ (probably Benbolt), 1 mile west of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Tenn. . Pseudolingula ? luttrellensis Cooper, new SPeCieS........ccccccccccceecececceces (6) Brachial view, X 2, of exterior of holotype, 109286b; (7, 9, 10) respectively side, brachial, and pedicle views, 1, of the holotype; (8) exterior of another brachial valve, X 1, paratype, 109286c; (11, 12) exterior of a large pedicle valve, respectively X 2 and X 1, paratype, 109286a. Moccasin formation, near Luttrell, Luttrell (T.V.A. 155-NW) Quadrangle, Tenn. . Langulellafostermonteusis (Butts \iise sie ve ee Faldo ekaldleles dws Wee Ro oaiele See's © (14, 15) Exterior of the pedicle valve, X 2 and X I, paratype, 71490a; (13, 16) exterior of a brachial valve, X 1 and X 2, lectotype 71490b; (17, 18) another well-preserved brachial valve, 1 and X 2, hypotype, 109284d. Attalla formation (just above red mudstone forming base of Chickamauga), Foster Mountain, 14 miles northwest of Clay, Leeds (15’) Quadrangle, Ala. . Lingulelis senuttesta Coopers new speciesiin 208 . kein tae Manele. BI Tees (19, 20) Respectively the exterior of the brachial and pedicle valves, X 4, para- type, 109299b, and holotype, 1092992. Columbiana formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. . Linguiecila ? glypia, Coopers Mew Species 25 «,fe,<\) «A '-)s sjalae ofslijealeotaets.2 sim datvigns Dahon (21, 22) Pedicle and brachial views of a small specimen, X 2, paratype, 116760b; SMITHSONIAN MISCELLANEOUS COLLECTIONS, VOL. 127, PART II 1025 210 206 216 199 205 200 1026 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page (23) pedicle view, X1, of holotype, 116760a; (24, 25) brachial and pedicle views, X 2, of the holotype. Bromide (Pooleville member—O-opflecia gouldi zone, zone 3), Rock Crossing of Hickory Creek, about center of sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. H. Obolus ? grandis Cooper, Hew Species: ... f.p.5 oP As BARE «coe cereciesccosrcccwses 190 (26-28) Respectively brachial, side, and pedicle views, < 1, of the holotype, 71823. Red Knobs formation, in a marble quarry near Knoxville, Tenn. PLATE 2 EcrENOGLosSA, LINGULELLA, OBOLUS, SPINILINGULA A. Spinilingula intralamellata Cooper, new SpecieS........... 2c cece cece eeccceeceees 210 (1) Exterior of small pedicle valve, X 6, paratype, 109281a; (2) exterior of bra- chial valve showing ornamentation, X 6, paratype, 109281b; (3) another small brachial valve, X 6, paratype, 109281c; (4) imperfect pedicle valve, < 6, para- type, 109281d; (5) another large pedicle valve, X 6, paratype, 1o9281e. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. B: Bingulella sp. G5. 5 isco 5.05.00 Bam cpu aaiaplngd oo tin alenoe biasbaera ct tice ey aati 3 208 (6,7) Respectively < 1 and X 2 enlargements of a pedicle valve, figured specimen, 109322. Aylmer formation (Rockcliffe member), Aylmer, Quebec Province, Canada. C. Lingulella Urata. Cooper, New Species neiscie ood c.cle cle vice! so vieis ol sm eOaGit oy ateeete erase 201 (8) Exterior of brachial valve, < 2, paratype, 109332b; (9) exterior of pedicle valve, X 2, paratype, 109332a. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. D. Obolus ? sp. 5.ssialesr cstdels oh ad m Mes etadeesay Fd «a Ree eT aaa «nei eee 193 (10, 11) Respectively 1 and XX 2 views of the exterior of a pedicle valve, figured specimen, 116772. Effna formation, on Virginia Highway 114, 11 miles east of the junction with Virginia Highway 311, near Haymakertown, Roanoke (15’) Quadrangle, Va. E. Ectenoglossa nymphoidea Cooper, MEW SPECIES. 02. 6:5 cies oc oleate aes «dials wielelns alee 218 (12, 15) Exterior and side views of a small brachial valve, X 1, paratype, 109297b; (14) another small brachial valve showing small patch of external ornamenta- tion at the anterior, X I, paratype, 109297a. Whitesburg formation (50 feet above Lenoir), Morristown Pike (U. S. High- way I1), 13 miles west of Bulls Gap, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. (16) Brachial valve of medium size, X I, paratype, 109280. Whitesburg formation, from railroad fill, 14 miles northeast of Bulls Gap, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. (17, 19) Exterior and side views of a large brachial valve, X 1, paratype, 71822a. Whitesburg formation, along the railroad east of Bulls Gap, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. (18) Large pedicle (?) valve, X 1, paratype, 109292e; (20) another large pedicle valve, X 1, the holotype, 109292d. Whitesburg formation, in the railroad cut at Summit Hill School, 1 mile southwest of Otes, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. (13) Ectenoglossa cf. E. nymphoidea Cooper, new species, exfoliated specimen, X 1, figured specimen, 109293. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Edinburg formation (Liberty Hall facies), 300 feet west of Virginia Route 3, 3 mile northeast of Nineveh, Winchester (15’) Quadrangle, Va. PLATE 3 EcTENOGLOSSA, GLOSSELLA, GLYPTOGLOSSA, LINGULELLA, PSEUDOLINGULA A; Glossellg Spr Wise BEI De 6 LAER A SRN PUBS RD TIM ARNOT ate olelaibiasd da, ¢ (1) Crushed and incomplete but highly ornamented specimen, X 6, figured speci- men, 109319. Botetourt formation, junction of Virginia Highways 311 and 114, 4 mile south- west of Catawba, Salem (15’) Quadrangle, Va. B. Pseudolingula ? sculptata Cooper, new SPeCi€S......2.. es eeercecce cee eeesrecees (2, 5) Respectively 1 and XX 2 views of the brachial valve, holotype 45065 ; (4) exterior of holotype, X 4, showing ornamentation; (3) enlargement, x 8, of ornamentation. Camp Nelson formation, opposite the railroad station, High Bridge, Harrods- burg (30) Quadrangle, Ky. C. Ectencglossa 2 Lyells (Billings)... .,- aGtise ited ote Cielieie «stehiek.d aleie oie elaiaie «het Slates ehatals (6, 7) Two brachial valves, respectively holotype, G.S.C. 1027c, and paratype, G.S.C. 1027. Aylmer formation (Rockcliffe member), Allumette Island, Ottawa River, Pontiac County, Ontario, Canada. De eingulclia bramerds (RAyMONG) sini. ct oe cise ac wins .0is a's, csiaie aves aise 5 qe smaole omaha (8) Brachial valve, X 1, hypotype, 109277f; (10, 11) pedicle valves, X 1, hypo- types, respectively 109277c and 109277a; (12) brachial valve showing external ornamentation and traces of the interior muscle marks, 2, hypotype, 109277g. Chazy group (sandstone at base), Isle la Motte, Rouses Point (15’) Quad- rangle, Vt. (9) Imperfect pedicle valve, X 1, hypotype, Carnegie Mus. 5432. Chazy group (base), Valcour Island, Plattsburg (15’) Quadrangle, N. Y. E. Glyptoglossa cavellosa Cooper, MEW SPECIES... 20 -.00ce osicje a0 cleo noe cle +c ose 0 0le aes (13, 14) Brachial and side views of the holotype, X 2, 109273; (15) brachial view of holotype, X 1; (18) enlargement of exterior of holotype, X 6, showing pecul- jar pitted surface. Shippensburg formation (Pinesburg member—Echinosphacrites zone), rail- road cut 2 miles southwest of Marion, Chambersburg (15’) Quadrangle, Pa. (16) A nearly complete brachial valve, 2, paratype, 109272a; (17, 19) respec- tively 1 and X 2 views of another brachial valve, paratype, 109272d; (20) ornamentation, X 6, of latter specimen. Upper Shippensburg formation (Pinesburg member—lower part of Nidulites zone), cut on U. S. Highway 40, on the west side of Conococheague Creek, 7 miles west of Hagerstown, Md. PLATE 4 EcTENOGLOSSA, GLOSSELLA, LINGULELLA A. Glosseifa numbona Cooper, HEW SPECIES ATs cc cece ccc seo eececectcscrnses (1, 4) Respectively exterior of the pedicle and brachial valves, X 4, paratype, 109285; (2) brachial valve of the same specimen, X 6, (3) enlargement of part of the pedicle valve of the preceding, X 10, to show the ornamentation. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center of sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. 1027 Page 229 217 217 196 227 228 1028 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL B. Lingulella subparallela Cooper, new SPECiCS..........eccccceceeescccessceescees (5-7) Brachial, side and pedicle views, X 4, of the holotype, 109295; (8) anterior half of the pedicle valve of the holotype enlarged, X 10, to show ornamentation. Effna formation, 1 mile east of Tilson Mill, 16 miles northeast of Marion, Nebo (T.V.A. 223-NW) Quadrangle, Va. Cc. Ectenoglossa < sculpia Cooper, MEW ASPECless. s:6:c:51c,cin//eoceuslauriniateraltyeleyaiokerecolatbisserical viele (9, 10, 13) Pedicle, side and brachial views of a nearly complete specimen, X 1, holotype, 109302b; (11) an incomplete pedicle ? valve, X 1, paratype, 109302a; (12) enlargement of the latter, X 4, to show ornamentation. Bromide formation (Pooleville member—O-opflecia gouldi zone), branch of Hickory Creek in NW} sec. 26, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. D. Lingulella rugosilinea Cooper, NEW SPECIES... 262.228 codecs cewcnaceerceesecceces (14) Incomplete pedicle valve, X 4, paratype, 45060c; (15) incomplete brachial valve, X 4, holotype, 45069b; (16) enlargement of the latter, X 10, to show details of ornament. Aylmer formation (Rockcliffe), Hogs Back, south of Ottawa, Gloucester Township, Carleton County, Ontario, Canada. PLATE 5 GLOSSELLA, LINGULELLA, PACHYGLOSSA, PSEUDOLINGULA AL” Lingulellas? (sp raee o Ee I Re eee Oe sea oer aeiaareterevers (2, 4) Pedicle and brachial views, X 1, figured specimen, 109304; (1, 3, 5) pedicle, side and brachial views of the same specimen, X 2, the brachial view showing the long prominent septum. Arline formation (middle to upper), on Sevierville Pike, 5 miles southeast of Knoxville, Knoxville (T.V.A. 147-NW) Quadrangle, Tenn. Be! AAT (Th See ROH TCC RAE R OPEC R es ARS HDs EMOBOROn OUARO MME Open oo Siben (6) Large pedicle valve, < 1, figured specimen, 116771. Oil Creek formation (60 feet above basal sand), sec. 12, T. 3 S., R. 3 E., 13 miles northwest of Sylvan, Carter County, Okla. Cl DanGudlellah 2 sp. S's sic evs a aie cicccheeNere oie tis he 0 SvSvelSTATe a sl gheile ate she Chere mere tenet eneaet ener sce (7, 8) Respectively 1 and X 2 views of a brachial valve, figured specimen, 1093074. Arline formation, north side of wagon road in glade, + mile southeast of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. . Pseudolingula ? smperfecta Cooper, new SPeCieS. «...s...05.<+s a6 sjsisie's os 4 meinen (9, 11) Pedicle and brachial views, X 1, of the holotype, 109303b; (10) imperfect pedicle valve, X 2, paratype, 109303d. Bromide formation (Pooleville member—O-vroplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. E.. Pachyglossa’? ‘elders CWhithheld e001. e Fe POs Fae aeiseeienis aa eee ed oe ae re (12) Plasticine replica of the brachial valve, < 1, figured specimen, 45015a. Platteville formation (Vanuxemia bed), Wanamingo, Goodhue County, Minn. (13, 14) Respectively X 1 and 2 enlargements of an impression of the interior showing muscle marks, figured specimen, 24734a. Platteville formation, Minneapolis, Minn. . Pachyglossa pachydermata Cooper, new SPeCi€S.....c.esccecerececceseccnascsers (15, 16) Respectively * 2 and X1 views of an imperfect brachial valve showing the exterior ornamentation, paratype, 116766; (17) pedicle valve, <1, of the to o y 220 203 207 206 207 215 225 225 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER holotype, 116767; (18) somewhat exfoliated brachial valve, 1, paratype, 109337. Botetourt formation, roadside at junction Virginia Highways 311 and 114, 4 mile southwest of Catawba, Salem (15’) Quadrangle, Va. G: Glosseila papillasa,. Cooper, NEW SPECIES. v2.6 ices occ e cc tie ces cn asclesens ses camys (19) Interior of pedicle valve, 4, paratype, 123305. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. i Hy bangulelia lirata Coopers flew, SPECIES... <. s.c.aec1c's o clea coe witie cela bie ccie es cece oie oisiee (20-23) Brachial and side views, X 1, 2, paratype, 109317b; (24, 25) respec- tively X 1 and X 2 views of the pedicle valve, holotype, 109317a. Edinburg formation (Liberty Hall facies—base), about 1 mile northwest of Lexington, Lexington (15’) Quadrangle, Va. See pl. 6, D, figs. 16, 17. I. Longulelia Fideauensts ‘Cooper, NEw SPECIES...0 2. cc kas cece ee accccccccesscses (26) Exterior of pedicle valve, imperfect at the anterior, 1, holotype, 1090315c; (27, 31) brachial exterior, X 1 and X 2, paratype, 109315a; (28) brachial exte- rior, <2, paratype, 109324a; (209) exterior of pedicle valve, 1, paratype, 109315b; (30) brachial valve showing apical region, X 2, paratype, 109324c. Aylmer formation (Rockcliffe member), Hogs Back, Rideau River, south of Ottawa, Gloucester Township, Carleton County, Ontario, Canada. PLATE 6 EcTENOGLosSA, LINGULELLA, PACHYGLOSSA, PLECTOGLOSSA, PSEUDOLINGULA A. Pachyglossa pachydermata Cooper, New SPeCi€S........eeeececccccccccecssecees (1, 2, 4) Respectively brachial, side, and pedicle views, X 2, paratype, 116768; (5) pedicle view, X 1, of same; (3) plasticine replica of the exterior of the brachial valve, X 2, of the same paratype. Benbolt formation, Tazewell County Farm, 1 mile east of Tazewell, Burkes Garden (15’) Quadrangle, Va. B. Ectenoglossa cf. E. nymphoidea Cooper, new SPeCieS....... cece cccccssceseecs (6) Exterior of a young, flattened pedicle valve, X 1, figured specimen, 116778a. Paperville formation, $ mile northwest of Hollins School, Roanoke (15’) Quadrangle, Va. C. Plectoglossa ‘oklahomensts Cooper; ew. (SPECIES 0s).\- vejcbcnssuarecccscuseceuceaeas (7) Exterior of a nearly perfect pedicle valve, X 4, paratype, 109294; (13, 14) brachial and pedicle views of an imperfect specimen, X 2, holotype, 116765; (15) brachial view, X 4, of holotype, showing delthyrial region. Bromide formation (Pooleville member—O-xvoplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. (8) Nearly complete brachial valve, X 3, paratype, 116764; (9) pedicle valve of a nearly complete specimen, X 1, paratype, 116763; (10-12) pedicle side, and bra- chial views, X 3, of the preceding. Bromide formation (Pooleville member, near base), Spring Creek, N4 sec. 17, R. 2 S., T. 1 W., Murray County, Okla. D.. Lingaleliavizrata: Cooper new ispeciestaiase 2) leibic eats bs (Tai Wand oi Weise ala a eta ble'ee (16) Plasticine replica of the exterior of the brachial valve, X 2, holotype, 109317a, figured on pl. 5, H, figs. 24, 25; (17) brachial view, with part of pedicle valve adhering, same as preceding. Edinburg formation (Liberty Hall facies—base), about 1 mile northwest of Lexington, Lexington (15’) Quadrangle, Va. See pl. 5, H, figs. 24, 25. 1029 Page 229 201 203 225 218 222 201 1030 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. E. Pseudolingula ? imperfecta Cooper, new SPeCi€S.......... cc ese ceeccceeenec cence (18,20) Brachial view of an imperfect specimen, X 1 and X 2, paratype, 116762b; (19) brachial view of another specimen showing a nearly perfect posterior por- tion, X I, paratype, 116762a; (21, 22) brachial and pedicle views, X 2, of the same. Bromide formation (Pooleville member—O-xopflecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T.5 S., R. 1 E., Criner Hills, Carter County, Okla. PLATE 7 LINGULELLA, OBOLUS, PACHYGLOSSA, PALAEOGLOSSA A. Pachyglossa biconvera. Cooper, New. SPCCICS wx). .-' fsa a ys vieisin axon clo eyo a mainiove & (1, 2) Internal impression and plasticine replica of brachial interior prepared from the internal impression, X 2, paratype, 109271{; (3, 6, 10) pedicle, side, and bra- chial views of a specimen preserving both valves, X 1, holotype, 109271g; (4) brachial view, X 2, of the holotype; (5, 8) nearly perfect brachial valve, X 1, x 2, paratype, 109271m; (7, 9) respectively 1, X 2, views of the brachial valve, paratype, 109271j; (II, 12) respectively < 1, X 2, enlargements of a fine pedicle valve, paratype, 109269a. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. B. Lingulella’ galba Cooper, new species. Seer os. ek eee Sete takes ca lee cee wetni. (13, 14) Respectively 2 and 1 views of the pedicle valve, holotype, 109282b; (15, 16) the brachial valve, 1, and X 2, paratype, 10928z2a. Bromide formation (Mountain Lake member), middle of east line of sec. 33, T.2S., R. 2 E., about 2 miles east of Springer, Carter County, Okla. C. Obalusa? nitensx Cooper, Mew :SPeCIOS .a5)a58 2ctsoiejs'ohaid meabsaneeY oeur imal gals sa aban tata. (17, 18) Brachial valves, X 3, paratype, 100329b; and holotype, 109329a; (19) the pedicle valve, X 3, paratype, 109320d. Lower Rich Valley formation, Porterfield Quarry, 5 miles east of Saltville, Va. D, Lingulella: spicata: Cooper, new speciesiiii,.2) chaivces ese ey sows sl neat een (23, 24) Respectively pedicle and brachial valves, X 2, holotype, 109301a, and paratype, 109301b. Whitesburg formation, in the railroad cut at Summit Hill School, 1 mile southwest of Otes, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. E. Obotus;% werginiensts: (Willard) ics Cais,cnieysieiole oo erecta haate seen: ahem ee os (20) An imperfect and partially exfoliated brachial valve, X I, paratype, 109335; (21) an imperfect pedicle valve, & 1, holotype, 109334; (22) enlargement, X 6, of part of the exterior surface of the holotype. Effna formation, paratype from 8 miles southwest of Bland, Bland County, Va.; holotype from lower part of McNutt Quarry, 5 to 6 miles northeast of Ceres, Burkes Garden (15’) Quadrangle, Va. FE: Palagoglossa ? bells (Billings) « .\; 2.2 os.0.. Sire crteioee Sat a ein hoe ee spit acre (25, 26) Respectively X 2 and X 1 enlargements of a brachial valve, figured speci- men, 109321a; (28) an imperfect pedicle valve, 1, figured specimen, 109321b. Chazy (base of group), Valcour Island, Lake Champlain, Plattsburg (15') Quadrangle, N. Y. (27) Large pedicle valve, <1, lectotype, G.S.C. 1026b. St. Martin formation, Island of Montreal, Quebec, Canada. 127 Page 215 224 190 204 IOI 221 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER 1031 (29) Small but imperfect pedicle valve, x1, figured specimen, Carnegie Mus. Bis ae (base of group), Valcour Island, Lake Champlain, Plattsburg (15') Quadrangle, N. Y. Pate 8 EcTENOGLOSSA, LINGULELLA, OBOLUS, PLECTOGLOSSA A. Obolus ? biconvexa Cooper, New SPeCi€S........cccccececccccrcccerccseecescees 189 (1) Pedicle valve, X 2, holotype, 116788c; (2, 3) two brachial valves, X 3, para- types, 116788b, a. Lower Paperville formation, slope just south of the Southern RR. cut 1 mile west of Mosheim, Mosheim (T.V.A. 181-NW) Quadrangle, Tenn. PEPE CIe MOI OS NE TSP Wee sieten cit sis cope siarais citniay o's sie Sete ae siete ein ios) a'e/m Ssiainic wiels.c\sisin siasie a's 220 (4, 5) Two large pedicle (?) valves, X 1, figured specimens, 116776a, b. Upper Table Head series, Port-au-Port, Newfoundland. (SP eMICNGRSD Whee ceec cok crise cle acme tines « nepindisemcle cn te lstealses a's 5 naa cain ole Ais 206 (6) Brachial valve, X 2, figured specimen, 116769c; (7, 8) respectively X 1 and 2 enlargements of the pedicle valve, figured specimen, 116769a. Upper Pogonip group (Anomalorthis zone), Ikes Canyon, east side of Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. (She GAG Oh Berta 2S a PSS OE NEES no Shen mn mre omtan ria cits 192 (9) Imperfect pedicle valve, 2, figured specimen, 116789a; (10, 11) two brachial valves, X 2, figured specimens, 116789), c. Upper Table Head series, Port-au-Port, Newfoundland. By inaulella alavamensts COOper, NEW SPECIES. 106 sla) ac's aus as gow isis oernieisis as ote ae oe 105 (12) Brachial valve, X 2, showing median ridge, holotype, 109309d; (13) pedicle valve, X 2, paratype, 100309b. Pratt Ferry formation, 0.2 mile south of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. TELS LOLCat ts Mier ee tee tee le) ce Resi tet ee ey sete aR bit cs Pb ES 208 (14) Pedicle valve, < 4, figured specimen, 109298. Dutchtown formation, Geiser Quarry, 14 miles east of Dutchtown, Cape Girar- deau (15’) Quadrangle, Mo. G... Lingulelia endopunctata Cooper, flew SPeCieS.. 2... oc eee cece e seen np eeceece 198 (15) Pedicle valve, X 4, holotype, 109320b; (16) brachial valve, X 4, paratype, 109320a. Botetourt formation (Cybeloides bed), § mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. EAU SENEREITIE TOU SIMs «Setar ss stere @'sjuia o'e.o. ane es. on ara cieimeicie e orale eras aunltrece wea 4/8.oi5le ses, Signe sige s 207 (17, 18) Respectively 2 and <1 enlargements of a pedicle valve, figured speci- men, 109312. Little Oak formation, 4 mile southwest of Newala, Montevallo (15’) Quad- rangle, Ala. Pe se aD) SSE OS aha kee ic a el clolcnchs oa SAA else Paco) acta an aot lo hain Moke ei dn alee acl iba oie 223 (19, 20) Pedicle and brachial views of a strongly ornamented linguloid, X 3, fig- ured specimen, 116774. Benbolt formation, 0.2 mile south of the middle fork of Moccasin Creek, 14 miles due south of Hansonville, Hansonville (T.V.A. 205-SW) Quadrangle, Va. ; }. Betenogiassa : rubra Cooper, Tew SPECIES. ek ghia aldo toe oteis kinase am dania sieptee eet 219 (21-23) Pedicle, brachial, and side views of an imperfect specimen with both valves in contact, X I, paratype, 116777b; (24, 25) side and brachial views of a 1032 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127 Page large brachial valve, 1, holotype, 1167772; (26) part of the ornamentation, X 3, of the holotype. Bays formation, 0.2 mile northeast of Fourmile Church, 1.1 miles south-south- east of Wellsville, Tallassee (T.V.A. 139-SE) Quadrangle, Tenn. PLATE 9 ACANTHAMBONIA, DICTYONITES, GLOSSELLA, LINGULELLA, OBOLUS, PALAEOGLOSSA, TORYNELASMA A. Acanthambonia virginiensis Cooper, New SPECIES..........cccceccccsessncccccecs 213 (1) Exterior view of a brachial valve showing long spines, 10, paratype, 116797c; (2, 4) respectively exterior views of a brachial and pedicle valve, X 10, paratypes, 116797b and 116797d; (3, 6) exterior and interior of a well-preserved brachial valve, < 10, holotype, 116797e; (5) interior of the pedicle valve, X 10, paratype, 116797a. Botetourt formation, east side of the road, 0.2 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. BR Amgulelia 2 SD. Bisieisis aio) « sinsie Sia3p.0y0 Sn sialap alo te aeicde again Ene nai ales iene ace face aa eer el tals 208 (7, 8) Exterior and interior of a brachial valve, X 5, figured specimen, 116779. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15') Quad- rangle, Ala. C. Torynelasma torymferum Cooper, Mew SPeCI€S. 6... 502 ee alne vin sinae cies sss cle o/s 258 (9, 10) Respectively pedicle interior showing the peculiar spoonlike plate and pos- terior view of a pedicle valve, X10, holotype and paratype, 116825c and 116825d. Pratt Ferry formation (lower 3 feet), 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. D: Dictyonites perforata Cooper, new, SPeCieS:.). £).)s sisjstale's,« ip om\st8ia sain, 0° olslaints inippaials «e 188 (11, 12) Exterior of imperfect brachial valves showing smooth apical region, X< 10, paratypes, 116830b and 116830c; (13) exterior of the pedicle valve show- ing the large homoeodeltidium and cleft apex, X 10, paratype, 116830a. Horizon and locality same as preceding. E. Lingulella decorticata Cooper, new SPCCtES.).\s cies s v.s/*\s\5/ dual ajcieiqsyuanied satiate aah 198 (14, 15) Exterior of the pedicle and brachial valves of a complete specimen with valves slightly displaced, X 2, holotype, 116757. Elway formation, } mile east of Belfast Mill, Saltville (T.V.A. 212-NE) Quadrangle, Va. By. OG OTS OR Si Be sis he tenses dialntel &ats.ale crave: eselele wile lelat ra Ata tangs NG Menthe alate t 193 (16) Exterior of a large and thick-shelled species having strong concentric ele- vated lines, X 3, figured specimen, 116791a. Pratt Ferry, formation, 0.2 mile southeast of Pratt Ferry, Blocton (15') Quadrangle, Ala. G. -Palaeogiossa' mysticensts Cooper, NEW SPECIES «6.5 cieiclesis erie sie ciasbiets Ais elseaede Siaiaianiene 221 (17, 18) Exterior of somewhat exfoliated pedicle and brachial valves, < 2, respec- tively holotype, 66285a, and paratype, 66285b; (19) exfoliated brachial valve showing the median ridge, 2, paratype, 66285c. Mystic conglomerate, Range 6, Lot 20, near Mystic, Stanbridge Township, Quebec, Canada. EDR ODOUUS 18 SPs A siaveseye: os wate iotsi's ciel osahelareeieralons eles ear. exe SARE IE Tice Late LIT Nera eee teraiaie 103 (20, 21) Interior and exterior of a well-preserved but incomplete specimen show- ing hinge region and pitted exterior, X 10, figured specimen, 116792b; (22) inte- rior of another brachial valve, X 10, figured specimen, 116792a. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15') Quadrangle, Ala. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER I. ‘Gldssella Thambong ‘Cooper; mew sspeciesiiid sasha lois Ga oeeinials hated oe siares eee. os (23-25) Respectively pedicle, side, and brachial views of the exterior showing fine papillae, < 4, paratype, 116786. Bromide formation (Pooleville member—bed 5), Spring Creek, sec. 17, T. 2 S., R. 1 W., Murray County, Okla. Js, (Glossella papulosa Coopet, NEW: SPECIESi,ce-sieicye. «inset oisiapms. of8 share ssmrovarorevesny die: ofevss4 ai uae (26, 27) Exterior and interior views of the pedicle valve showing apical struc- tures and ornamentation, X 5, holotype, 116787b. Compare with Spinilingula, pl. 11. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. PLATE 10 DictyonitTes, EoconuLus, LINGULELLA, PALAEOGLOSSA A: Dictyouttes: perforata: Gooper). new SPeCieSdiearsings au. ci nenie onda neds exis siete o's (1, 2) Exterior and posterior views of a pedicle valve showing the cleft apex and the large arched homoeodeltidium, X 10, paratype, 116830j; (3, 4) same views of another and larger pedicle valve, X 10, holotype, 116830-1; (5) exterior of a well-preserved brachial valve showing smooth apex, X10, paratype, 1168301; (6, 7) interior and exterior of a large brachial valve showing apex and simple structures of the interior, X 10, paratype, 116830k; (8) posterior view of a pedi- cle valve showing the strongly arched homoeodeltidium, 15, paratype, 116830d; (9) interior of a poorly preserved pedicle valve showing a median ridge near the apex, X 12, paratype, 116830h; (10) interior, X 12, of paratype, 116830d, showing short median septum. Pratt Ferry formation (lower 3 feet), 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. B. Eoconulus rectanguiatus Cooper, new SpeCieS.... 6 s.).i dace eee ene bobs Sek ces cen (11, 12) Posterior and side views of the brachial valve, X 10, holotype, 116840a; (13) interior of another brachial valve showing large lateral muscle scars and a median callosity, X 10, paratype, 116840b. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. Ci Palecdglassarsp ties Jeane atin: cota JL eeaek CaS UU. PEN (14, 15) Pedicle and brachial views of the exfoliated shell, 1, figured specimen, 116775; (16, 17) same views, X 2, showing septum in brachial valve. Edinburg formation (Cyrtonotella zone), 100 yards west of U. S. Highway 11, 1 mile northeast of Strasburg, Strasburg (15’) Quadrangle, Va. D: Lingulélla, fostexmontensts).< Butts) sys Yeioeatat Ho. ds Mews Oh dawee weed Ke ae Eke (18, 19) Respectively 1 and XX 2 views of a large brachial valve, hypotype, 116759c; (20, 21) another and larger brachial valve than the preceding, respec- tively X 1 and X 2, showing the concentric ornamentation, hypotype, 116759b; (22) a large pedicle valve, X 2, hypotype, 116759a. Rocks of Blackford facies = Attalla formation (at base), west base of Foster Mountain, Birmingham Quadrangle, Ala. PLATE II GLOSSELLA, LINGULELLA, OBoLus, PACHYGLOSSA, SCHIZOTRETA, SPINILINGULA, TREMATIS, WESTONIA EEO OY Ve TON TARE Pie Aa AN I INR HU ACTING Arlee PER Dee NLU, Ue Pe (1) Exterior of a fragment of the posterior part of a brachial valve, < 4, showing concentric ornamentation, figured specimen, 116791b. 229 188 283 222 199 193 1034 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. B. Lingulella lirata Cooper, New SPeCi€S....... eee e cece cece eee c eee e eee eeer cence (2, 3) Interior of imperfect pedicle valve, respectively X6 and X 8, showing apical structures, paratype, 116761a; (4) posterior of the brachial valve showing the apical structures, X 8, paratype, 116761b. Horizon and locality same as preceding. C. Schizotreta willardi Cooper, NEW SPECIES... 0... ccc e cee cetera e scene (5) Fragment showing the apical foramen of the pedicle valve, 5, paratype, 116806¢g. Horizon and locality same as preceding. Ds (OB Gus 8 Sp: Aistvcisie anacads wiatata etoile s 0'< WESROR IER 2 2 ca naals eta oe ects t= ater mietronelasreta (6, 7) Interior and exterior of an imperfect specimen, X 4, figured specimen, 116792c; (8) exterior of same specimen, < 8, showing rows of pores. Horizon and locality same as preceding. EB,” Westomaisuberba Cooper, mew Species 20. Sy ot vc ccs valsie eo He's sels leialemie eis aes vite (9, 10) Exterior and interior of the brachial valve, X 4, showing ornamentation and apical structures, holotype, 11678ob. Horizon and locality same as preceding. F. Pachyglossa dorsiconvexa Cooper, MEW SPECIES.........ecce ee cecccccccccecccces (11) Exterior and side view of the brachial valve, showing the strong convexity, X 2, holotype, 116758a. Horizon and locality same as preceding. G. Glossella papillosa Cooper, new species...... 5 3 js 6 ana alban auailage tea e) Sas eRe ea oR (12, 13) Exterior and interior views of the brachial valve, < 4, showing apical structures, paratype, 116787d; (14) fragment showing papillae on exterior, X Io, paratype, 116787e. Horizon and locality same as preceding. H. Tremetts elliptopora Cooper, new :Speciess «acjaay. tale tisgoteb sist toric eis clays steets. «ota > (15, 16) Exterior and interior of the pedicle valve showing the pedicle notch, X 3, paratype, 116800d; (17, 20) exterior and interior of an imperfect brachial valve, X 4, showing pores and apical structures, holotype, 116809c; (18, 19) same views of another fragmentary brachial valve showing apical structures, X 5, paratype, 116809a; (21) apical view of another brachial valve showing smooth apex, X 4 (specimen lost). Horizon and locality same as preceding. I. Trematis:? spinosa Cooper: ‘ew species) P20 ee ee (22, 23) Exterior and interior of the brachial valve showing the spines clustered at the apex, respectively 6 and &X Io, holotype, 116810; (24) interior of an- other brachial valve showing apical plate and spines, & 10 (specimen lost). Horizon and locality same as preceding. J. Spinlingula intralamellata Cooper, new species... 2.5... ce cetasce teste cease es es (25, 26) Exterior views of two brachial valves showing the lamellose and spinose ornamentation, X10, respectively holotype, 116784a, and paratype, 116784b; (27) small pedicle valve seen from the exterior, X 6, paratype, 116784c; (28) pedicle valve from the exterior X 6, paratype, 116784d; (29, 30) interior of the apical ends of the pedicle valve, X 10, showing deep pedicle groove and bound- ing plates, paratypes, 116784e, 116784f£; (31, 32) interior views of the brachial valve, 10, showing apical plate, paratypes, 116784g and 116784h. Horizon and locality same as preceding. 127 Page 201 281 193 209 225 229 271 274 210 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1035 PLATE 12 LEPTOBOLUS, LINGULASMA Ay Leptobotus sasvgnis Fall. < ,)os 3. SGU Ree eae os ae be Sebo oped fe 214 (1) Pedicle exterior, X 8, figured specimen, 71887a; (2) pedicle interior showing ridges, < 8, figured specimen, 71887b; (3) brachial exterior, X 8, figured speci- men, 71887c; (4) brachial interior showing anterior median ridge, X 8, figured specimen, 71887d. Eden (Fulton), St. Thomas, Ky. B. Leptobolusdepis Halhsit) . citsnkt .32 “QW aic wlaiaio Bia sles ait day elerate (59) Interior of a brachial valve showing low median septum and muscle scars, X 3, paratype, 117968b; (60) posterior of another but imperfect brachial valve showing triangular pit and muscle scars, X 3, paratype, 117968c. Horizon and locality same as preceding. PLATE 18 127 Page 251 251 ACANTHAMBONIA, CONOTRETA, PATERULA, RHYSOTRETA, SCAPHELASMA, SPONDYLOTRETA, TORYNELASMA, UNDIFERINA A. Spondylotreta: concentrica Cooper; new SPOCIOS .. sce dee delelc eee bed elle ba ele a (1, 2) Exterior and interior of the brachial valve, < 6, paratype, 116826c; (3-6) respectively side, posterior, apical, and interior views of the pedicle valve, X 4, holotype, 116826a; (7) interior of another pedicle valve showing the spondylium- like apical structure, ca X I0, paratype, 116826b. Pratt Ferry formation (lower 3 feet), 0.2 mile southeast of Pratt Ferry, Blocton (15) Quadrangle, Ala. B. Undiferina rugosa Cooper, new SPeCieS.......-cecescccssccceccsseccecs outcres (8, 9) Exterior and interior of the brachial valve, < 4, paratype, 1168300" (20) interior of the same specimen, X 6, showing apical structure and median sep- tum; (10, II) posterior and exterior views of another brachial valve, X 4, holo- type, 116832b; (12, 13) interior of holotype, X 4 and X 8, showing expanded tip of median septum; (15) exterior of the holotype, x 8, showing the strongly wrinkled surface; (14) interior of a brachial valve tilted slightly to show the median septum and its expansion in partial profile, < 8, paratype, 116832c; (18) same specimen in normal interior view, X 4; (16) same as preceding in exterior view, X 6, to show the wrinkled surface; (17) imperfect brachial valve with no expansion of the septum, X 6, paratype, 116832d; (19, 21) imperfect brachial valves showing an expanded and a tubular end on the median septum, x 6, paratypes, 116832e and 116832f. Horizon and locality same as preceding. C. Conotreta:? concentrica: Cooper, Mew Species 2). Bees. ITS le GR Te Nek (22) Apical view of an imperfect pedicle valve, X 4, showing the minute foramen, holotype, 116814. Horizon and locality same as preceding. D. Acanthambonia minutissima Cooper, NEW SPECIES........ce cece ccccsesececcccsees (23) Interior of the brachial valve showing the apical structure, X 10, paratype, 116795a; (25) posterior part of the same specimen, X 15, showing the broad apical plate; (24) interior of the pedicle valve showing delthyrium, X 10, holo- 263 250 212 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER type, 116795b; (26) posterior of same, X15; (27) exterior of the brachial valve showing the spines, X 10, paratype, 116795c. Horizon and locality same as preceding. E. Torynelasma toryniferwm Cooper, new SPeCi€S.....- sees eee e eee s rece eeeeeeeces (28, 29) Exterior and interior of a nearly perfect brachial valve, X 10, paratype, 116824c; (30) same specimen showing spoon on median septum, X 4; (35, 36) side and tilted views of the preceding, < 8, showing septum and spoon; (31-33) posterior, side, and anterior views of the pedicle valve, X 4, paratype, 1168242 ; (34) another, but slightly damaged, pedicle valve, 4, paratype, 116824b. Horizon and locality same as preceding. F. Rhysotreta corrugata Cooper, new SPpeCieS. ...... eee eeeee eee ce eee eeeeeeeeeeeees (37-40) Respectively apical, posterior, anterior, and side views of a pedicle valve, < 10, showing fairly large apical foramen and corrugated ornamentation, holo- type, 116817a; (41) exterior of the brachial valve, X10, paratype, 116817b; (42) young pedicle valve in apical view showing the large foramen, ca. X 20, paratype, 116817c; (43, 44) interior and side view of the brachial valve, X Io, showing septum, paratype, 116817d; (45, 46) brachial valve tilted to side to show septum, and same specimen in posterior view, 10, paratype, 116817e; (50) exterior, < 8, of the same brachial valve as preceding; (47, 49) side and interior views of an old brachial valve showing septum and muscle scars, X 8, paratype, 116817f; (48) posterior view of a large pedicle valve, X 10, showing elongate smooth track and foramen, paratype, 116817g (specimen broken in photo- graphing). Horizon and locality same as preceding. G. Conotreta ? alitrostra. Cooper, new. SPCCieS.«.« « 22: slsisletses 2 Wea aisle. de Me ee ae (51-53) Anterior, side, and posterior views of a pedicle valve, x 4, holotype, 116812. Botetourt formation, in the field on the south side of the road 0.2 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. H, Paterula' periecta,Cooper, new species: wiiiig. 3. 26 DIE BRI. Re MS UU A (54) Exterior of the brachial valve showing the small apex, X 4, paratype, 116799b; (55) exterior of the pedicle valve showing the notch at the apex, X 4, paratype, 116799c; (56) posterior portion of pedicle valve showing notch and traces of muscle marks, I0, paratype, 116799a. Pratt Ferry formation (lower 3 feet), 0.2 mile northeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. I. Torynelasma: minar (Cooper; New Species .'s ccc... os oOetbase we elele EN on ocictee stalls (57, 58) Side and anterior views of a pedicle valve, 8, paratype, 1168234; (59) interior of an imperfect brachial valve showing short spoon and high septum, X 20, paratype, 116823c; (60, 62, 64) side, tilted, and normal interior views of a brachial valve showing the spoon and muscle marks, X 20, holotype, 116823a; (61, 63) another brachial valve smaller than the preceding, X20, paratype, 116823b. Horizon and locality same as preceding. J. Scaphelasma sebtatum Cooper, new )SpecieS. wie a cet aele sede sees eee SEO Vee eens (65, 66) Respectively enlargement of the apical region and exterior view of a pedi- cle valve showing foramen, X 10, X 20, holotype, 116819a; (67) posterior view of another pedicle valve showing foramen and groove posterior to it, X 10, para- type, 116819b; (68) side view of the pedicle valve, X 10, paratype, 116819Cc; (69)inside of a pedicle valve showing pedicle tube, X 10, paratype, 116819d; (70) interior of the brachial valve showing the median septum, X Io, paratype, 116819e; (71) brachial valve in interior view tilted to side to show septum in partial profile, X 10. paratype, 116819f; (72) full view of another brachial inte- I04I Page 258 259 248 238 257 260 1042 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page rior showing the apical plate, < 10, paratype, 116819g; (73) exterior of the bra- chial valve showing elevated beak and concentric lines, X 10, paratype, 116819h. Horizon and locality same as preceding. PLATE I9 SCHIZOCRANIA, SCHIZOTRETA, TREMATIS A. Schizotreta ‘willardi; Cooper; new) species. 02.8 e Ue eal tets e oe cote ces eee ee 281 (1) Exterior view of exfoliated brachial valves, < 2, paratype, 109697g; (2) mod- erately well preserved brachial valve showing exterior, X 2, holotype, 109697b; (3, 4) brachial exterior, < 2, respectively a replica of the exterior made from an impression and the counterpart of the impression, paratypes, 109697e, f; (5) exfoliated pedicle valve, X 2, paratype, 109697c; (6) somewhat exfoliated pedicle valve showing foramen track, < 2, paratype, 109660a. Pratt Ferry formation, 0.2 mile south of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. B. SchtzdiretashuleraoCw illacd ys ind ge Re PRET are 280 (7) Brachial valve showing ornamentation well, 2, hypotype, 1o9699c; (8, 9) side and apical views of a partially exfoliated pedicle valve, 2, hypotype, 109699a. Rich Valley formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. CEE MULEUS S016 Be oo. Ssxa Sa: 5:5 etisnepmyeylaraae! er abblan a tote! fee veipapa ie eed @ Sr Sieve ets aad le 275 (11) Imperfect brachial valve, < 3, figured specimen, 109704, (10) enlargement of same, X 6, showing external pits. Lower Edinburg (Cyrtonotella zone), $4 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. D. .Tremats foersia: Cooper menmispécies so). 60.28 290) SRE SR. 271 (18, 15) Pedicle valve, X 1 and X 2, holotype, 109707d; (16) plasticine replica of the exterior of a pedicle valve, X 1, paratype, 109709a; (17) the brachial valve, X I, paratype, 109709d; (19) ornamentation, enlarged xX 4, of preceding. Plattin (Macy) or Barnhart formation (upper 10 feet), Yaeger Farm, 3 miles northwest of Frankford, 54 miles southeast of New London, Ralls County, Mo. E. Trematis parva Cooper; new species hie CH ae Us i BS RE Oe ee 273 (13) Exfoliated brachial valve, X 3, paratype, 109705a. Lower Whitesburg formation, 4 mile west of Bulls Gap, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. (14, 12) Brachial valve preserving exterior, X 3 and X 6, holotype, 109703. Chatham Hill formation, Grayson Farm, 4 miles southwest of Bland, Va. F. Sctizocraniaxflosa (Hall) bas Satie whe 42R OD. OO AO ea 275 (20) Cluster of small individuals on a Rafinesquina shell, X 3, figured specimen, 109711; (21) brachial valve, < 2, of a large individual on the same slab. Plattin group (Macy formation) or Barnhart formation (upper 10 feet), mouth of Big Creek, Ralls County, Mo. Ge Schizotretaspe sk J daihy 4, of ante- rior of preceding; (3, 4) brachial interior, X 1 and XX 2, showing muscle scars, figured specimen, 24743a. Decorah formation, Minneapolis, Minn. 1047 Page 239 238 230 231 194 285 1048 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL B. Petrocrania ? magna Cooper, new SPeCCi€S.....scsccveecscsccccscevorceesccences (6, 7) Brachial valve, side and exterior, X 1, holotype, 109762. Effna formation, lower part of McNutt Quarry, 12 miles southwest of Bland, Burkes Garden (15’) Quadrangle, Va. PEUOcrAnia’'? SP. Boh d wisleeié io sio.sino.0's dis inye wiShid Saw Ele SIs ahs eet aka see & otal (8-10) Respectively interior, side, and exterior views of a silicified brachial valve, X 2, figured specimen, 109770. Edinburg formation (base of Liberty Hall facies), 1.8 miles S. 4° W. of Bethel Church, 5.9 miles due east of Harrisonburg, Harrisonburg (15’) Quadrangle, Va. . Petrocrama *hath “(Sardéson) ear) 5. 3) TROFEO BOO De is BS ie Dok (11) Brachial interior showing muscle scars, X 2, figured specimen, 24218a. Decorah formation (Spechts Ferry member—Stictoporella bed), Lake Street Bridge, St. Paul-Minneapolis, Minn. (12) Another brachial valve, X 2, figured specimen, 45218a. Decorah formation (Ion member—Phylloporina bed), St. Paul, Minn. Petrocranta hamiltoniae (Hall) eves, 28. BoEa I aS, FOS, BL ERS SOS (13) Plasticine replica of the interior made from an impression of the brachial in- terior showing muscle scars and pallial marks, < 14, figured specimen, 116834c; (14) plasticine replica of the pedicle interior showing pallial and muscle marks prepared from an interior impression, < 14, figured specimen, 116834b. Devonian, Ludlowville formation (Stone Mill member), at elevation of 1,265 feet on the road 1 mile southwest of Randallsville, Morrisville (15’) Quadrangle, INDE Peimocrania prota (Rayne ) iste seis erocecsie, sass, shade uel LL ee (15) Exterior of brachial valve, X 2, cotype, Carnegie Mus. 5441; (16) brachial valve exterior, < 1, figured hypotype, A.M.N.H. 25046/2; (18) brachial interior showing large central muscle scars, X 2, cotype, Carnegie Mus. 5443; (17, 19) brachial interior, < 2 and X 1, cotype, Carnegie Mus. 5442. Chazy group (Crown Point), Valcour Island, Lake Champlain, Plattsburg (15’) Quadrangle, N. Y. ESM OCKOMEG: *SDy Bioreiatst ctaratshabinnde! oad sth etabatilatahsls edict eee eee (20) Brachial interior, < 2, figured specimen, 109766a; (21, 22) side and exterior views of the brachial valve, X 2, figured specimen, 109766b. Bromide formation (Mountain Lake member), deep well of Oklahoma Mid- continent Petroleum Corporation, on Jones Farm see. ao) Tos NYY Re 3 BS Pottawatomie County, Okla. « REROCHGUEE (SDE iT sein: sitivrs.scovdc0.00.8 Sele eee ere ote Ue RE tea ah, SRE (23) Brachial interior, X 2, figured specimen, 109778. Dryden formation (30 feet above marble), road along Little Sycamore Creek, 4 mile northeast of west edge of the Howard Quarter (T.V.A. 162-NW) Quad- rangle, Tenn. Petrocranis wniiaia’ Cooper: new species, 23.222 Vil 20e, Soe, ee cease tes (24, 25) Side and exterior views of a brachial valve, X 2, paratype, 109767. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. Peirocrand miata (Cooper: Mew) SPeCieSwv. ses seo soc safes eee eioniae eee (26, 33) Side and exterior views of a brachial valve attached to Strophomena crinerensis, X 2, paratype, 109783c; (27, 32, 35) respectively side, exterior, and posterior views of a robust brachial valve, x 2, holotype, 109785a; (31, 34) brachial and side views of the holotype, < 1; (28-30) side, posterior, and exte- 290 288 288 289 291 290 288 288 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER rior views of another specimen showing surface ornament of the host Stropho- mena crinerensis reflected on the exterior, X 2, paratype, 109785e. Horizon and locality same as preceding. PLATE 26 ACANTHOCRANIA, PETROCRANIA, PHILHEDRA A. Acanthocrana, grandis, Cooper, NEw SPECIES... o/s < oda tinny + cian «isms s © din ashsa.aloyals'« a (1) Brachial valve, X 1, holotype, 116838; (2, 3) exterior and side views, X 2, of the holotype, showing spiny ornamentation. Base of Benbolt formation, west slope of hill 4 mile east of Cedar Point School, Hilton (T.V.A. 197-NW) Quadrangle, Va. B. Philhedradepressa Cooper, inew SPeCleS ie sig x + ocsimataseresess as Smje awe da'o wcmpaipis 4 Asie RS aelohi es siete oeiad dae oe Siete eueiasrs (9) Brachial valve, < 6, figured specimen, 117970. Whitesburg formation, 24 miles southeast of Whitesburg, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. E. Petrocronia dizonensis Cooper, News SPECIES vh;s/:¢ 5 « patois Deep idialabewas oleate. fe (10, 11) Apical and side views of the brachial valve, X 1, holotype, 45215. Platteville formation, Dixon, Dixon (15’) Quadrangle, Ill. Be A COMEROCT EMG, SP iia.5 a1 5 sxoiein a 0.0 Sigteaaioe oles Se EIR ieee ee en eae (12, 13) Apical and side views of the brachial valve, xX 2, figured specimen, 116839; (14) same, X 1. Lebanon formation (Doleroides zone), on U .S. Highway 70N, opposite Fair- view Service Station, 4 mile west of Rome, Tenn. Gar Chrocrianin TKCRTONENSTS, (CEtall).,. 02. oss wee Sees ane REL RE eee een ee (15) Pedicle valve of Eoplectodonta alternata with encrusting Petrocrania seen in posterior view, X I, hypotype, 116835; (16, 17) apical and side views, X 2, of the same specimen. Martinsburg formation (Salona equivalent), on Virginia County Highway 617 =910, 0.15 mile north of Green Mount Church, Broadway (15') Quad- rangle, Va. H. Acanthocrania oklahomensis Cooper, new specieS..........eeceeeeeeees comet te a (18) Four individuals encrusting a valve of Opikina, X 1, holotype, 116837a and paratypes, 116837b-d; (19) same, X 2; (20) apical view of one of the indi- viduals, 3, holotype, 1168372. Bromide formation (Pooleville member—bed 2), sec. 22, T. 2 S., R. 3 E., west of Nebo, Murray County, Okla. PLATE 28 AcRoTRETA, CONOTRETA, LINGULELLA, PACHYGLOSSA, SCHIZOTRETA, TORYNELASMA A. Conotreta triangulata Cooper, new SPeCieS..........ccccesccccc cee ccc ccccccscce (1-4) Respectively tilted, anterior, side, and brachial views of a complete speci- men, X 2, holotype, 117973. 127 286 225 274 287 286 290 285 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER 1051 Page Effna formation, on the north side of Virginia Highway 114, 7 miles northeast of Lusters Gate, near Blacksburg, Va. B. Schizotreia posteroconvexa Cooper, NeW SPECIES. ........ eee ee eee cee ee eeseeeees 279 (5, 6) Side and posterior views of the pedicle valve, < 3, holotype, 11680rb. Base of Athens formation (beds with Christiania), 0.2 mile southeast of Britton Church, 2} miles northeast of Calhoun, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. C. Pachyglossa dorsiconvexa Cooper, New, SPECIES «50.2 60/o oc [6 beers cece © tielnwwieiee es else 225 (7, 8) Exterior and interior of the pedicle valve, showing apical region, X 3, paratype, 117976. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. DD) Aeraireta magna) (Coopers, NEW..SPECIES oxo, tsre,sior> onal anys ofabers > orseorsteba islets suecerersye loiele\ siete 246 (9, 10) Apical and side views of the pedicle valve, X 3, holotype, 109724a; (11) plasticine squeeze showing a replica of the exterior of the brachial valve, X 3, paratype, 109724b; (12) exterior, X 5, of the same paratype showing details of ornamentation. From boulders in the Mystic conglomerate, Range 6, Lot 20, 2$ miles north of Mystic, Stanbridge Township, Quebec, Canada. E. Torynelasma tornyiferum Cooper, new SPeCieS.......2.0ccecrsnecscenscccseveees 258 (13-15) Exterior, side, and interior views of a large brachial valve, < 10, showing high median septum and spoonlike plate, slightly broken at the anterior end, paratype, 116825f; (16) posterior view of a pedicle valve, X10, paratype, 116825e. Pratt Ferry formation (lower 3 feet), 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. ban LeIOMIEL LIFE. COOPEL. THEW: GUECICS: occ clains.e 5 acres e.sasiciaiele ata tpeiele/s)tia a bias 50: oun astince 201 (17, 18) Interior views of two pedicle valves, X 4, showing apical region, para- types, 117975b and 117975c; (19) apex of specimen shown in fig. 18 enlarged x 8 to show apical structures in more detail; (21, 22) exterior and interior of a nearly perfect brachial valve showing ornamentation and apical structures, re- spectively X2 and X 3, paratype, 117975a; (23) apical region, X 6, of the pre- ceding; (20) exterior of a large brachial valve, 3, paratype, 117980. Horizon and locality same as preceding. G.. Schazotreta'corrugata: Cooper, new Species 12s Oa is hie aloes Seoleio's Se clone « 277 (27) Interior of a pedicle valve (see pl. 21, C, fig. 18, for exterior view), showing foramen and traces of muscle scars, X 3, paratype, 117972a; (28) posterior part, X 6, of the preceding, showing foramen in greater detail; (24, 25) exterior and interior of a nearly complete brachial valve, 2, holotype, 116808-1; (26) inte- rior of a brachial valve showing flattened marginal rim and traces of the mus- cles, X 3, paratype, 117972b. (For the exterior of this specimen see pl. 21, C, fig. 14.) Horizon and locality same as preceding. PLATE 20 ORTHIDIELLA, TREMATORTHIS A. Tremarorinis masons Wisiclt and Coopers. tee cc cess ccc aee ccs et se ee ccusescens ts 341 (1-5) Brachial, posterior, side, pedicle, and anterior views of a complete specimen, X 3, hypotype, 116863d; (6) brachial interior, < 4, showing brachiophores and supporting swellings, hypotype, 1168632; (7) pedicle interior showing pallial trunks, X 3, paratype, 95876a; (15) exterior, X 3, of same; (8) posterior view showing apical foramen, X 3, lectotype, 95876c; (11) exterior, X 3, of preced- ing; (14) posterior of pedicle valve, X 6, hypotype, 116863f; (9, 10) posterior 1052 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. and interior views of a brachial valve, 3, showing brachiophores and their supports, paratype, 95876e; (12) posterior of another brachial valve showing cardinal process, < 4, hypotype, 116863a; (13) pedicle interior, 4, hypotype, 116863e. Pogonip group (mottled zone 700 feet below the Eureka quartzite), base of the first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. B. Trematorthss feniss Cooper, NEW SPECIES. occ esecncctcsncesnvatecebaeteesnee st (16-20) Brachial, side, pedicle, anterior, and posterior views, X 3, of the holotype, 117978a. Horizon and locality same as preceding. C. Frematorilas robusta, Cooper, ‘new Species 4. cee etc esti tees Ceca tenectiecc cess (21-25) Respectively anterior, brachial, posterior, side, and pedicle views, x 4, of the holotype, 116865a; (26) pedicle interior, < 4, paratype, 116865c; (27) same, X 4, tilted to show the pseudodeltidium. Horizon and locality same as preceding. PLATE 30 ORTHIDIELLA, ORTHIDIUM A. Orihndiun’ bellglum Uirich andi Gooper sc as cs cteiw niaien cre eros eas gh srapeinieae= aac (1-5) Respectively posterior, pedicle, side, brachial, and anterior views, x 4, of the holotype, 92848. Upper Pogonip group, Ikes Canyon, east side of Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. B.. Orthidiella spe - 2s sicvesaaiasa Meee RUS Me SAE ER Ee CE OS Ere ee Sole henge (6-9) Anterior, pedicle, side, and brachial views of an unusually fasciculate indi- vidual, X 2, figured specimen, 116861a; (10) posterior, X 3, of the preceding; (11) interior of the brachial valve of a similarly marked specimen, X 3, figured specimen, 116861b, Pogonip group (mottled zone 700 feet below the Eureka quartzite), base of first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. C. Orthidiella costellata, Cooper, new Species, cites st sisiad de Sisepe mines seme ements (12) Interior of the brachial valve, X 2, showing the cardinal process, paratype, 116859b; (13) exterior of a large pedicle valve showing the fine ornamentation, X I, paratype, 116859d; (14) interior of the pedicle valve, < 2, showing elongate diductor muscle scars, paratype, 116859e; (15-17) pedicle, side, and brachial views of a complete specimen, X 2, holotype, 1168592; (19) complete specimen slightly turned to the side to show the cardinal process in position, X 4, paratype, 116859c. Pogonip group (Orthidiella zone), in the narrows 2 miles up Whiterock Canyon, Roberts Mountains (1°) Quadrangle, Nev. (18) Orthidiella cf. O. costellata Cooper, new species. Brachial view of a large complete specimen, X 2, figured specimen, 11798Ia. Pogonip group (mottled zone 700 feet below the Eureka quartzite), base of first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. D.) Orthidtelia’ longwelle Ulrich “and Cooper... fe ot ace ce ss seit ce meena ny aid oekieys (20) Posterior of the brachial valve showing the cardinal process, X 4, holotype, 912090. Horizon and locality same as preceding. E. Orthsdiella.extensa Ulrich} and} Cooper). ap fibsjoie'. Suistticatalele as ania leiels sigan wa tetele (21-24) Brachial, side, pedicle, and anterior views of a nearly perfect specimen, X 2, hypotype, 116857{; (26) same, 1; (27) posterior view of same, X 3, 127 Page 342 342 340 340 338 339 339 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER showing cardinal process; (25, 28) brachial view, X 1 and X 2, of another com- plete specimen, hypotype, 116857a; (29) posterior view of a large brachial valve showing cardinal process, 4, hypotype, 116857e; (30) brachial interior, X 3, showing swellings around brachial plates, hypotype, 116857b; (31) large pedicle valve, X 3, showing ovarian impressions and elongate muscle scar, hypotype, 116857g; (32) brachial interior, X 3, hypotype, 116857c. Horizon and locality same as preceding. PLATE 31 ARCHAEORTHIS, ORTHIDIUM, PLEURORTHIS A. Orthidium fimbriatum Cooper, new SpecieS..- 2.66 cc nce ce cece cece ccscccccccecees (1-3) Brachial, side, and pedicle views of a large specimen, X 3, holotype, 116855a. Table Head series, 4 mile north of Belle Burn, Newfoundland. (4) Brachial exterior, & 4, showing frill, paratype, 116854a. Table Head series, south side of Stearing Island, Cow Head, Newfoundland. (5,6) Exterior and side views of a large pedicle valve, X 3, paratype, 116856b. Table Head series, Table Point Cove, Newfoundland. B. Archaeorthis biconvexa Cooper, New SPECIES........cccccesennceceeccccencecens (7, 10) Interior and exterior of the brachial valve, < 3, paratype, 116852b; (8, 9) interior and exterior of the pedicle valve, & 3, holotype, 116852a. Limestone lens in Womble formation, 1,100 feet south and 700 feet west of the NE corner sec. 3, T. 2 N., R. 19 E., Pushmatahah County, Okla. C: Pleurorthts. costellata-Gooper, New Specie... s.csaok celeste etre pele coc tsisiiate slew s cme (11, 12) Brachial valve, * 1 and X 2, paratype, 116845c; (13, 14) pedicle valve exterior, < 2 and X1, holotype, 116845b. Boulder in Mystic conglomerate, Range 6, Lot 20, 2} miles north of Mystic, Stanbridge Township, Quebec, Canada. ie Picarorthis tonvera Cooper, New, SPeCieS. ob. <6 Si.j. cucmine vis soles se npnieh apd mpeuet ovaicioietnye (15,17) Pedicle exterior, X 2 and X 1, holotype, 116844e; (16, 19) brachial exte- rior showing deep sulcus, X 1 and X 2, paratype, 116844d; (18) exterior of a large brachial valve, X 2, paratype, 116844b; (20) an imperfect pedicle exterior, X 2, paratype, 116844a; (21) brachial exterior, X 2, paratype, 116844c. Horizon and locality same as preceding. E. Pleurorthis fasctcostellata Cooper, new. Species... i... 6 ov. vesicles so apiewdienere slacwers (22) Exterior of a small pedicle valve, 1, paratype, 116841b; (24) impression of the brachial interior prepared by burning and scraping away the shell, x 2, paratype, 116841g; (25) large brachial valve, X 1, paratype, 116841c; (26) pedi- cle impression showing dental plate slots, X 2, paratype, 1168411; (27) large brachial exterior, X 1, paratype, 116841d. Horizon and locality same as preceding. (23) Plasticine replica of the exterior of a large pedicle valve, 1, holotype, 117082. Mystic conglomerate boulder, Range 6, Lot 21, 2.6 miles north and 4 mile east of Mystic, Stanbridge Township, Quebec, Canada. fee) i Veunaetiee eri oitirt a Cia Nines es ten Gee ceed a oi ac ac Ais < ablative a8 SS ends 9 (28, 29) Interior and exterior of an imperfect brachial valve, X< 2, holotype, G.S.C. 807. Limestone No. 2, in Lévis shale, Lévis, Quebec, Canada. 1053 Page 340 293 330 329 331 332 1054 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. PLATE 32 CyYRTONOTELLA, HESPERORTHIS, PLEURORTHIS, RHYSOSTROPHIA A. Plearesthis-sp! Tes}. + doadhas. aowk weet .wxtelee dctskatand Doers auartloess techie (1) Brachial valve, X 2, figured specimen, 116846. Table Head series, south side of Stearing Island, Cow Head, Newfoundland. By Pleurorthis imbecilis’ (Billings )\.0) 0s ss nectaaiianes aepee ack toreish dene Heese 4 (2, 4) Two pedicle valves, fig. 4 showing the dental plate impressions, X 2, hypo- types, 116842b and 116842a. Upper Table Head series, Table Point Cove, Newfoundland. (3) Brachial exterior, 2, hypotype, 116843. Upper Table Head series, Table Point, Newfoundland. CG. Pleuhorihis sp. rik gs eae Bag a le ea aT ae eaten a. enters Uleiiehy ec (5, 6) Exterior and interior of a silicified pedicle valve, x 2, figured specimen, 116848. Lower middle Table Head series, north of Table Head, Newfoundland. DD: Rhysostropnid. Sp. 3. vclecee seh cee ates eee e nse Lea CoN oe pte aerate att (7, 8) Interior and exterior of a pedicle valve, < 4, figured specimen, 17228. Pogonip group (Desmorthis zone), west side of Goodwin Canyon, Eureka District, Nev. Ex Hesperorthis.?. costalis, (Hall). ajosc0.ie Goes a eee Oa DEM iads Ree ee bite Mace tea ee (9, 13) Impression of pedicle interiors showing short dental plates and muscle scars, X 2, hypotypes, 116853d, 116853e; (10, 11) respectively impression of the brachial interior and a replica of the interior prepared from the impression, X 2, hypotype, 116853j; (12) somewhat exfoliated pedicle exterior, X 2, hypotype, 116853b; (14) another pedicle valve, X 2, hypotype, 116853c. Day Point formation (upper “Orthis” bed), quarry just north of Hotel Cham- plain, south of Cliff Haven, Plattsburg (15’) Quadrangle, N. Y. (15) An imperfect pedicle valve, < 2, Hall’s type specimen, A.M.N.H. 528. Chazy group, Chazy, N. Y. By Gyrtonotellasd: sp, Swvrrdvrials Would. lows. Heel atte tara ba etree tees alti tas (16, 17) Respectively the plasticine replica of the brachial valve, X 2, and the impression from which it was prepared, X 2, figured specimen, 109867b; (18) plasticine replica of the brachial exterior, < 2, figured specimen, 109867a; (19) plasticine replica prepared from the internal impression of a somewhat larger brachial valve than that figured above, X 2, figured specimen, 109867d; (20) brachial exterior, X 2, counterpart to internal impression shown in fig. 17, fig- ured specimen, 109867c; (21) plasticine replica of the pedicle exterior, x 2, figured specimen, 109867a. This specimen is the counterpart of the brachial exterior shown in fig. 18. Botetourt formation, Hayes Creek, 2 miles northwest of Brownsburg, Lexing- ton (15) Quadrangle, Va. PLATE 33 ORTHAMBONITES A. Orthambomites divaricatus Cooper, Mew SPeCieS.......eccccecnccccwecccccccccccs (1, 2) Interior and exterior of the pedicle valve, X 1, holotype, 109838a; (3) bra- chial interior, < 2, paratype, 109838b. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. B. Orthambonites multicostellatus Cooper, new SPeCi€S..........ceeceecccccecceeees (4, 5) Interior and exterior of the brachial valve, * 1, paratype, 116875a. 127 Page 332 331 333 560 349 326 302 307 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Oranda formation along the railroad 4 mile west of Strasburg, Strasburg (15’) Quadrangle, Va. (6, 7) Pedicle exterior, 2 and X 1, holotype, 116876a. Edinburg limestone (Cyrtonotella zone), along the railroad about § mile east of Strasburg Junction, Va. C. Orthambonites acutiplicatus (Raymond) ...........sccccccecececesetseestececes (8) Somewhat exfoliated brachial exterior, X 2, paratype, Carnegie Mus. 5460; (9) small pedicle valve, X 1, lectotype, Carnegie Mus. 5458; (10, II) respec- tively 2 and X1 enlargements of a large pedicle valve, paratype, Carnegie Mus. 5459. Chazy group (Day Point ? formation), Valcour Island, Lake Champlain, Plattsburg (15’) Quadrangle, N. Y. D. Orthambonites paucicostatus (Ulrich and Cooper) ...........ccce cee ee eee eeeeees (12, 14) Respectively X 2 and 1 enlargements of a pedicle valve, hypotype, 109834m; (13, 15, 16) side, pedicle, and brachial views of an imperfect speci- men, X 2, hypotype, 109834a; (19) pedicle view, X 1, of the preceding; (17, 18) brachial valve, X 2 and X 1, hypotype, 109834b. Upper Pogonip group (lower part of Rhysostrophia bed), Ikes Canyon, east side Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. E. Orthambonites dinorthoides Cooper, MEW SPeCieS........cceeccccecccceseeecccees (20) Brachial interior, X 2, paratype, 109822a; (22) imperfect pedicle valve, X 1, paratype, 109822b. Upper Oil Creek formation, West Spring Creek, 3 miles east of Pooleville, Murray County, Okla. (21) Exterior of a small brachial valve, X 1, paratype, 109823d; (24) nearly per- fect pedicle valve, X 1, holotype, 109823b; (25) nearly perfect brachial interior, X 2, paratype, 109823a; (26) pedicle interior, 2, paratype, 109823c. Oil Creek formation (614 feet above base), west side U. S. Highway 77, NEINE} sec. 25, T. 2 S., R. 1 E., Carter County, Okla. (23) Large brachial valve, X 1, paratype, 109821a; (27) impression of the pedicle interior showing the muscle scars, X 2, paratype, 109821d. Oil Creek formation, sec. 14, T. 2 S., R. 1 E., about 5 miles north-northwest of Springer, in Murray County, Okla. PLATE 34 ORTHAMBONITES A. Orthambonites bifurcatus Cooper, new SPeCieS.........cccseccccceccsccnceceeees (1) Exterior of a silicified pedicle valve showing the ornamentation well, x 2, paratype, 116869; (2-4) side, brachial, and pedicle views, X 2, of a nearly com- plete specimen, the holotype, 109798e; (6) holotype, 1; (5) brachial view of another small individual, * 1, paratype, 109708¢. Upper Pogonip group (Rhysostrophia zone), north side of Ikes Canyon 1 mile above the entrance, east side of Toquima Range, Roberts Mountains, (1°) Quadrangle, Nev. B. Orthambonites occidentalis Cooper, NEW SPECIES. ...... csc c ccc cec cc ceceeecceess (7-9) Pedicle, side, and brachial views, 1, of the holotype, 109807a. Horizon and locality same as preceding. C. Orthambonites rectangulatus Cooper, new SPeCi€S......... ccc eecccceeeccccseeee (10) Pedicle view, 1, of the holotype, 116877; (11-15) respectively posterior, anterior, pedicle, side, and brachial views, < 2, of the holotype. Shippensburg formation (Pinesburg member—just above Echinosphaerites 1055 Page 204, 310 301 297 308 310 1056 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page zone), west bank of Conococheague Creek, on U. S. Highway 40, at Wilson, 7 miles west of Hagerstown, Williamsport (15’) Quadrangle, Md. D. Orthambonites minus Cooper, riew! Speciesiis. oi i. DIB. SU Sd 304 (16-20) Posterior, pedicle, side, brachial, and anterior views, X 3, of the holotype, 116882. Tulip Creek formation, about 90 feet below top, east edge of NE+ sec. 25, T.2S., R. 1 E, east side of U. S. Highway 77, 24 miles north of Springer, Carter County, Okla. E. Orthambonites subconvexus Cooper, Mew SPeCieS........ ec cece cece eee ee eee eeces 312 (21, 22) Respectively X 1 and X 2 enlargements of the brachial interior, para- type, 1090844b; (26) exterior, <1, of preceding; (23, 24) exterior and interior of the pedicle valve, X 1, holotype, 109844a; (25) holotype, X 2. Oil Creek formation (75 to 100 feet below the top), SW sec. 31, T. 1 S., R. 1 W., on West Spring Creek, east of Pooleville, Murray County, Okla. F. Orthambonites rotundiformis Cooper, new SPeCi€S...... 2... cccccccccccceccececs UT (27) Impression of the pedicle interior showing scars of ponderous dental plates, teeth, and pallial marks, X 2, paratype, 109842a; (35) plasticine replica of the brachial exterior, 2, paratype, 109842b. Basal Athens formation, on Cleveland-Benton road, 5 to 54 miles east of Cleveland, East Cleveland (T.V.A. 120-NE) Quadrangle, Tenn. (28-30) Side, pedicle, and brachial views of a complete specimen, XX 2, holotype, 109843a; (33) brachial interior, X 2, paratype, 109843b; (34) pedicle interior, X 2, paratype, 109843c. Basal Athens (Christiania beds), 600 feet S. 40° E. of the highway and rail- road crossing 1 mile northeast of Athens, above quarry, Athens (T.V.A. 125-NE) Quadrangle, Tenn. (31) Impression of the brachial valve, X 3, paratype, 1098401; (32) impression of the pedicle interior, X 2, paratype, 109840h; (36, 37) interior of old brachial valve showing pallial and muscle marks, and the plasticine replica prepared from the impression, X 2, paratype, 109840j ; (38) pedicle interior impression showing Ovarian impressions and muscle scars, X 2, paratype, 109840f; (39) plasticine replica of the pedicle exterior from a mold, X 2, paratype, 109840g. Basal Athens formation, roadside just east of intersection, 24 miles south- southeast of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. PLATE 35 ORTHAMBONITES A. Orthambonites mostellerensis Cooper, New SPeCi€S......cesceececcccccesveccsceee 306 (1-4) Brachial, side, posterior, and pedicle views of a complete specimen, X I, holotype, 109810b; (8) brachial interior, X 2, of the holotype; (6) pedicle inte- rior, 1, of holotype; (7) pedicle interior, 2, paratype, 109810e; (9) another pedicle interior showing large teeth and crural fossettes, X 2, paratype, 1o9810a; (5) exterior, X 1, of preceding; (10) brachial interior showing thick cardinal process and brachiophores, X 2, paratype, 109810c. Little Oak formation, cut on L. and N. RR., 3 mile northwest of Mosteller, Columbiana (15’) Quadrangle, Ala. B. Orthambonites parvicrassicostatus Cooper, NEW SPECIES....... cece cece ccc ceeeeees 309 (11-15) Anterior, side, pedicle, brachial, and posterior views of a perfect specimen, 2, holotype, 116872a; (16) brachiai view of another complete specimen, X I, paratype, 116872b; (22) same, 2; (17) brachial interior, X 2, paratype, 116872c. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Benbolt formation, wash on east side slope in pasture, 0.2 mile south of the middle fork of Moccasin Creek, 14 miles due south of Hansonville, Hanson- ville (T.V.A. 205-SW) Quadrangle, Va. (18-21) Pedicle, brachial, posterior, and side views of a complete specimen, X 2, paratype, 116871b. Benbolt (lower), west slope of hill 4 mile east of Cedar Point School, Hilton (T.V.A. 197-NW) Quadrangle, Va. (23) Brachial interior, X 3, paratype, 109832a; (24, 25) brachial and pedicle valves of a complete specimen, X 3, paratype, 109832b. Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. C. Orthamboniies blountensis Cooper, new SPeCieS........0..0ecececccccccccccccecs (26-28) Brachial, pedicle, and side views, 1, of the holotype, 109812h; (29) brachial view, X 2, of holotype; (30, 31) exterior and interior of pedicle valve, X 2, paratype, 109812a; (32) exterior of another pedicle valve, X 2, paratype, 109812b; (33, 34) interior and exterior of brachial valve, X 2, paratype, 109812c. Arline formation, north side of wagon road in glade, 4 mile southeast of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. D. Orthambomics bellus. Cooper, mew: SPECIES vo:«).:o,o/<:s arnie!a/eye eo o:e:s 0rele oie)aiaie/ara eels wlefa%s «8 (35, 30) Pedicle interior, respectively titled to show dental plates and normally posed, X 2, holotype, 116866c; (38) pedicle exterior, 1, paratype, 116866a; (43, 44) brachial exterior, respectively X 2 and X 1, paratype, 116866f; (45) interior, X 2, of same; (46, 47) brachial interior, X1 and X 2, paratype, 116866e. Chatham Hill formation, north slope Walker Mountain, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. (37, 39) Interior and exterior of a pedicle valve, X 2, paratype, 109790a; (40) brachial interior, X 2, paratype, 109799b; (41, 42) exterior and interior of a brachial valve, X 2, paratype, 109799c; (48, 51) interior and exterior of a small pedicle valve, X 3, paratype, 109799d; (49, 50) interior and exterior of a small brachial valve, < 3, paratype, 109790¢. Chatham Hill formation, Grayson Farm, 4 miles southwest of Bland, Va. PLATE 36 ORTHAMBONITES A. Orthambonites friendsvillensis Cooper, new SPeCi€S...........ccceeececccccceccs (1) Brachial interior, X 2, paratype, 109827g; (2, 4, 5, 7) pedicle, posterior, bra- chial, and side views of a complete specimen, XX 1, holotype, 109827b; (6) bra- chial view, X 2, of the holotype; (3) brachial views of another complete speci- men, X 2, paratype, 109827c; (8) pedicle interior, X 2, paratype, 109827h. Arline formation, north side of wagon road in glade, 4 mile southeast of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. B. Orthambonites. bielsteims Cooper, new SpeCi€S. .....,.0)0-seslnccccclacccetcecceass (9, 12, 13, 15, 17) Brachial, side, posterior, anterior, and pedicle views of a com- plete specimen, X 1, paratype, 109803b; (10, 11, 14) brachial, pedicle, and side views, X 1, of another complete specimen, holotype, 1o9803a. Martinsburg formation (Salona equivalent), 14 miles north of Staunton, Va. (16) Brachial interior somewhat doubtfully referred to this species, X 2, figured specimen, 109845a. Benbolt formation, 4 mile east of Speers Ferry, Clinchport (T.V.A. 188-NW) Quadrangle, Va. (18) Brachial view of the exterior, X 1, figured specimen, 109801. 1057 Page 298 295 303 296 1058 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Shippensburg formation (Pinesburg member—shaly beds between Echino- sphaerites and lower Nidulites zones), railroad cut 1.7 miles southwest of Marion, Chambersburg (15’) Quadrangle, Pa. C. Orthambonites angulatus Cooper, new SPeCieS.......... ccc cece ccc ccc cece cececs (19, 20) Exterior and interior of a large pedicle valve, X 1, holotype, 109797. Probably Arline formation, James Wayland Farm near Riverdale, 9 miles east of Knoxville, Shooks Gap (T.V.A. 147-NE) Quadrangle, Tenn. D. Orthamboniites. butiss: \(Schuchért’ and Cooper) 22). 25. ee a (21, 25, 28, 29) Pedicle, posterior, brachial, and side views of a large specimen, X 1, hypotype, 109808a; (27) brachial view, X 2, of preceding specimen; (22, 31) respectively X 1 and X 2 enlargements of the brachial interior, hypo- type, 116870b; (23, 26) pedicle interior, respectively X 2 and X 1, hypotype, 116870c; (30) exterior, X 14, of same; (24) brachial view of a complete speci- men, X 1, hypotype, 1168702. Little Oak formation, intersection Bailey Gap road with main road, SWi1SW+4 sec. 13, T. 19 S., R. 2 W., 13 miles northeast of Newhope Church, Vandiver (15’) Quadrangle, Ala. E. Orthambonites brachiophorus Cooper, new specieS.........ccceccecccccecccecees (32, 33) Imperfect brachial valve, respectively tilted to side and seen in normal view to show long brachial processes, X 2, paratype, 109835a; (34, 39) pedicle exterior, X I and X 2, holotype, 109835c; (35) brachial exterior, X 1, paratype, 109835d; (36) pedicle interior showing muscle area and pallial trunks, > 1, paratype, 109835f; (37, 38) respectively X 2 and <1 enlargement of a brachial valve, paratype, 109835b. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. PLATE 37 MIMELLA, ONNIELLA, ORTHAMBONITES A. Mimella.superba: Butts = 1. globosax(Willardy kev teow. «caen ee ees ee eee (1-4) Respectively pedicle, anterior, brachial, and side views of the type specimen of Mimella superba Butts, X 1, hypotype, of M. melonica (Willard), 98210. Probably Benbolt formation, Rye Cove, Clinchport (T.V.A. 188-NW) Quad- rangle, Va. BE: Mimella-ouginiensts Cooper, mew SPECIES. «3:5 seuss, ce aise east lcloce alie aaceeloioeioe sig oles (5-7) Respectively side, pedicle, and brachial views, <1, of the holotype, 98188a. Whistle Creek formation, along Whistle Creek, 2 miles northwest of Lexington, Lexington (15') Quadrangle, Va. C. Onmella*? americana Cooper, new species? <= cee. ds one ce ta cence ete ont (8-12) Respectively brachial, side, posterior, anterior, and pedicle views, of the holotype, I, 116964a; (13-14) respectively X I and X 2 views of the pedicle exterior of another specimen, paratype, 116964b. Lower Hermitage formation, along Tennessee Highway 53, 1 to 14 miles south-southeast of Woodbury, Woodbury (15’) Quadrangle, Tenn. D. Orthambonites neumani Cooper, New SPECi€S.........cccrecccecncccccsccceccces (15, 16) Plasticine replicas of the exterior of the pedicle valve, 1, paratypes, 116874b and 116874-0; (17, 18) plasticine replicas of two brachial exteriors, < 1, paratypes, 116874d and 116874q; (19, 20) respectively the impression of the bra- chial interior and a plasticine replica of the interior prepared from it, X I, para- type, 116874d. This is the inner counterpart to the exterior shown in fig. 17; (21, 22) impression of the brachial interior and a plasticine replica prepared from it, X I, paratype, 116874-1; (23, 24) another impression of the interior of 127 Page 294 300 298 487 953 307 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER 1059 Page a thickened brachial valve showing the enlarged cardinal process, I, paratype, 116874n; (25) the posterior of the preceding enlarged, X 2, to show the cardinal process in more detail; (26, 27) impression of the interior of the pedicle valve and a replica of the pedicle interior prepared from it to show the form of the muscle scars and the nature of the dental plates, X 1, holotype, 116874e; (28) impression of the muscle scars of another pedicle valve, 2, paratype, 116874h. Tellico formation (sandstone No. 3), 0.3 mile northwest of Cold Springs School, Wildwood (T.V.A. 147-SE) Quadrangle, Tenn. PLATE 38 NoTHOoRTHIS, ORTHAMBONITES, TAPHRORTHIS A. Taphrorthis emarginaia Cooper, New SPeCi€S.... .<0sc ca cn. seen c ence cesecececes 327 (1) Interior of an imperfect brachial valve showing the cardinalia, 3, lectotype, G.S.C. 9067e; (25, 26) exterior and interior of a large brachial valve, < 3, paratype, G.S.C. 9067; (27, 28) exte- rior and interior of another brachial valve, 3, showing cardinalia, paratype, G.S.C. 90672; (29) interior of the preceding, x 4.5, showing cardinalia in greater detail. Possibly an erratic in the lower part of the Lévis shale, Lévis, Quebec. E. Orthambonites tenuicostatus Cooper, new SPeCi€S..........eeceeeeeeccnccccccees 314 (30-34) Respectively anterior, posterior, side, brachial, and pedicle views of a com- plete specimen, X 3, holotype, 116875b; (35, 36) interior and exterior of a bra- chial valve showing form of muscle scars, X 3, paratype, 116875e; (37) an- other pedicle interior, X 3, paratype, 116875a; (38, 39) interior and exterior of a pedicle valve, X 3, paratype, 116875d; (40) interior of the brachial valve show- ing the cardinalia, 3, paratype, 116875c. Pratt Ferry formation (lower third), 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. 1060 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. F. Nothorthes transversa Coopers mew, SPCCleSin. «ste caiainiciciotei cle as ticie fans teas ain oheleieieinciettee (41-43, 46) Respectively brachial, anterior, side, and posterior views of a small but complete individual, < 4, paratype, 117985d; (44, 45, 52, 53) respectively posterior, anterior, side, and brachial views of a specimen larger than the previ- ous one, X 4, paratype, 117985a; (47-51) respectively posterior, anterior, side, pedicle, and brachial views of a large individual, > 4, holotype, 117986; (54, 56) interior of the brachial valve, X 4 and XX 6, showing the cardinalia, paratype, 117985b; (55) interior of another brachial valve showing incipient cardinal process, < 4, paratype, 117985c; (57, 58) interior of a brachial valve showing adductor scars, X 4, X 6, paratype, 117985e. Horizon and locality same as preceding. PLATE 39 CyRTONOTELLA, NICOLELLA, TAPHRORTHIS A. Taphrorthis peculiaris Cooper, new SPeCieS... 5.0.0 scene see cecsecesccoeseeaed (1, 5) Brachial interior and exterior, X 2, paratype, 109883b; (3) brachial exte- rior, <1, of same; (2) another brachial interior, 2, paratype, 109883e; (4, 6) exterior and interior of the pedicle valve, X 2, holotype, 109883c. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. B. Nicolellasstrasburgemsis. sBiattsw disc cite phe dais tetera 2S KENOBI ae LOS (10) Brachial exterior, 1, lectotype, 97549a; (7) view of interareas, X 2, showing chilidial plates of lectotype; (9) another specimen showing chilidial plates, X 2, paratype, 975490. Oranda formation, along the railroad 4+ mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. (8) Plasticine replica of the brachial exterior, X 1, hypotype, 109889b; (11) im- pression of the pedicle interior, X 1, hypotype, 109889a. Oranda formation, 1 mile northwest of Guilford Springs, 24 miles southwest of Chambersburg, Chambersburg (15’) Quadrangle, Pa. C. Cyrtonotella. subplana, Cooper,, new SP@Ci€S.c s,a/ta:s 5) stalasdtny frail amet dhe 366 (8) Anterior view, X 6, showing ornamentation, holotype, 110052a. Bromide formation (Pooleville member—O-voplecia gouldi zone), branch of Hickory Creek, NW+4 sec. 26, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. D. Ptychopleurella globularts, Cooper, MEW, SPECIES «.4)..< 0,010 .0.aarnjriniais #4. mele sila ecmeie ajeis 385 (9, 15, 17) Respectively side, brachial, and pedicle views of an imperfect specimen, X 3, paratype, 116954a; (10) brachial interior, < 3, paratype, 116954b; (11) pedicle interior, X 3, paratype, 116954c; (12, 14, 16) respectively brachial, poste- rior, and pedicle views of an imperfect specimen, X 3, paratype, 116954d; (13) - brachial interior, X 2, paratype, 116954e. Arline formation, 100 yards southwest of the Negro Cemetery, 4 mile north- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. E. Glyptorilis uniformis Cooper, new SPECIES... 0.62 ence acs cccssceense sale manets ess 378 (18, 19, 21) Respectively brachial, pedicle, and side views of a complete specimen, X I, paratype, 116944a; (20) brachial view, X 2, of the same. Base of Benbolt formation, west slope of the hill 4 mile east of the Cedar Point School, Hilton (T.V.A. 197-NW) Quadrangle, Va. 1064 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Ey, Glyptorthis concinnula Cooper, Tew SPeCies <'j.0)<)\sjcisje's yoleye oie Fo nels eye apo)h Safes les wes 365 (22) Brachial exterior, 1, paratype, 110027a; (23) brachial view of another specimen, X 2, paratype, 110027b; (24-28) respectively brachial, posterior, side, anterior, and pedicle views, X 2, of the holotype, 116931a. Little Oak formation, Bailey road junction with main Cahaba Valley road, SWiSW45 sec. 13, T. 19 S., R. 2 W., 13 miles northeast of Newhope Church, Vandiver (15’) Quadrangle, Ala. (29) Brachial interior, < 3, paratype, 110028a; (35-38) respectively side, pedicle, anterior, and brachial views of a complete specimen, X 2, paratype, 110028b; (39) brachial view, X 1, of same. Horizon and locality same as preceding. (31-33) Respectively pedicle, side, and brachial views of a complete specimen, XI, paratype, 110025a; (34) brachial view, X 2, of same. Little Oak formation, 4 mile north of Pelham and 660 feet east of road inter- section of main Cahaba Valley road with Helena road, Bessemer Iron District (15’) Quadrangle, Ala. (30) Brachial exterior of a large specimen, X 2, paratype, 110035a. Basal Athens formation, 600 feet S. 40° E. of railroad crossing 1 mile north- east of courthouse in Athens, Athens (T.V.A. 125-NE) Quadrangle, Tenn. (40) Impression of a brachial interior, < 2, paratype, 110034b; (41) plasticine replica of the pedicle exterior, * 2, paratype, 110034g; (42) plasticine replica of the brachial exterior, X 2, paratype, 110034e; (43) impression of the pedicle interior showing form of muscle area, X 2, paratype, 110034a. Basal Athens formation, just east of the road intersection 24 miles south-south- east of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. PLATE 44 GLYPTORTHIS A. Glyptorthis alia Cooper, new species S020. 5 84a ok FPA Se 361 (1-4) Respectively posterior, pedicle, side, and brachial views, <1, of the holo- type, 110008; (5) brachial interior, X 1, of the holotype. Kimmswick formation, Goetz Quarry, Jefferson County, Mo. B. Ghyptorthes rara ‘Coeper! new species. See hier. oo rec cone oe ee Wee e one ce atan teres 372 (6-10) Respectively posterior, anterior, side, brachial, and pedicle views, x 3, of the holotype, 110069a. Benbolt formation, second road cut west of L. McDavid’s house, 1 mile west of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. C. Gilypiorthis .crenmulata) Cooper,’ few “SpecieS..S0¢ 3 wicsu sao o> one a as) elt vee Glaeitare clgve 367 (11, 12) Respectively 1 and X 2 enlargements of a fine pedicle interior show- ing muscle scars, paratype, 110054; (13) brachial view of a complete specimen, X 1, holotype, 116032a; (14-18) respectively posterior, anterior, brachial, pedi- cle, and side views, X 2, of the holotype; (19) brachial interior, < 3, paratype, 116932b. Bromide formation (Mountain Lake member—bed 8), cut on Oklahoma High- way 18, center NW3 sec. 11, T. 1 S. R. 3 E., 1.8 miles south-southeast of Sulphur, Murray County, Okla. D. Glyptertiis coStellaia Cooper, Mew SPECIES’... esissstiva es © a:n5)ssaia athe ne aimee gen otc levees 366 (20) Brachial interior, 2, paratype, 110038a; (21-25) respectively anterior, posterior, brachial, side, and pedicle views, X 2, of the holotype, 110052a; (26) the holotype, X I. (32, 33) Brachial view of a large specimen, 1 and 2, paratype, 110059a; PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1065 Page (34, 35) respectively 1 and X 2 views of a brachial valve, paratype, 110052b; (36) pedicle interior, X 2, paratype, 110059b. Bromide formation (Pooleville member—Ovopflecia gouldi zone), branch of Hickory Creek, NW434 sec. 26, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. (27-30) Respectively pedicle, side, posterior, and brachial views of a well- preserved specimen of medium size, X 1, paratype, 110040a; (31) brachial view, X 2; of same; (37) enlargement, X 4, of the brachial surface showing lamellae, paratype, I110040b. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. PLATE 45 GLYPTORTHIS A. Glyptorthis irregularis Cooper, new SpeCieS.......... ccc cece cece cece ceeeeeeees 370 (1, 3) Exterior of a pedicle valve, X 2 and X 1, holotype, 116936a; (2) pedicle interior, X 2, of holotype; (4, 5) respectively * 1 and X 2 enlargements of the brachial exterior, paratype, 116936e; (6) brachial interior, <2, paratype, 116936d. Wardell formation, in Raccoon Valley, # mile northeast of Fleanor Mill, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. B: (Glyptorihis Senecta Cooper; new Species’. oi O2e4 GAN. s Segal te dave cia 6 Bard Pele ware es olay 373 (7) Pedicle interior showing muscle scars, X 2, holotype, 110070h; (8) pedicle exterior, X 2, paratype, 1100701; (9) same as preceding, X 1; (10, II) respec- tively 1 and X 2 enlargements of the brachial exterior, paratype, 110070g; (12) brachial exterior, X 3, paratype, 110070d; (13) interior of a young bra- chial valve, X 2, paratype, 110070f; (14) interior of a large brachial valve, X 2, paratype, I10070c. Poteet formation (Yellow Branch member = 9-foot marble), on the road beside Yellow Branch, 5 miles southeast of Rose Hill, Rose Hill (T.V.A. 161-NE) Quadrangle, Va. C. Glyptorthas’ asstmilis, Gooper, New SPECieSiraajsd ze oi oss Wslsie aos. wee keilod ass eRe OE | 361 (15-19) Anterior, posterior, side, pedicle, and brachial views of a young, complete specimen, XX 2, paratype, 116928g; (20) brachial view of another specimen, younger than the preceding, X 2, paratype, 1169281; (21) pedicle view of a very young individual, 2, paratype, 116928h; (22) pedicle exterior, X 1, paratype, 110013b; (23, 24) respectively 2 and 1 enlargements of the brachial exte- rior, paratype, 110013d; (25) pedicle exterior, X I, paratype, 110013g; (26, 27) pedicle exterior and interior, X 2, paratype, 110013c; (28) posterior portion of pedicle interior showing interarea and pedicle plate, 2, paratype, 116928f; (32) pedicle interior, 1, paratype, 116928c; (33) same, X 2, showing fos- settes and apical plate; (34) delthyrial cavity of preceding enlarged 4 to show apical plate; (35) brachial interior, & 2, showing cardinalia, paratype, 110013f. Ridley formation (lower third), east side Marshall Knobs, 5 miles south of Murfreesboro, Murfreesboro (15’) Quadrangle, Tenn. (29) Pedicle exterior, 2, of a large specimen, paratype, 110012c; (30, 31) respectively 1 and X 2 enlargements of the interior of the preceding. Ridley formation, Murfreesboro, Tenn. 1066 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 PLATE 46 GLYPTORTHIS Page Bc GEQDEEIN ED SEAT 5 cislore sc cote. ote cists a2 ie lene Sende nevencias steetcok aiken ice Ose eitil ie eae 381 (1, 4) Exterior and interior, X 2, of a well-preserved pedicle valve, figured speci- men, 116948; (2, 3) respectively same views, X I, as preceding. Lower part of the dark shale beneath Eureka quartzite, north-facing nose of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. B: Glyptorthis uncinata Cooper, new SPeCi€S. i... occ ie danas cre s os leans oe tana eres 377 (5-7, 9, 10) Respectively posterior, anterior, side, brachial, and pedicle views of a complete specimen, < 2, holotype, 116943a; (8) brachial view, * 1, of same. Bromide formation (Mountain Lake member—middle of bed 6), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. Ci Glyptorthis umformis Cooper, new SpeCi€S... oo... 02. ee ccnceeccccccaseunceogs 378 © (11) Brachial view, X I, paratype, 116946b; (12-15) respectively anterior, poste- rior, pedicle, and side views of a complete specimen, XX 3, paratype, 116946a; (16) brachial view, X 2, of same specimen; (17) pedicle view, X 3, of same. Basal Benbolt formation, intersection of main road with lane to north, 4 mile southwest of Fleanor Mill, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. D. Glyptorthts subcarinata Cooper, new SPECIES... 2.6... eee cece se ene tenet mans ee 374 (18) Brachial view, 1, holotype, 117987; (19-23) respectively posterior, side, anterior, pedicle, and brachial views, X 2, of the preceding. Lower Sevier formation, 4 mile northeast of Miser, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. BY Glyptorines suicaia \COOper, NEW SPECIES .'S\< c«c.w sis sisi twee e)ticbiwisinis ss winiare ot arabe elses 375 (24-27) Respectively brachial, side, pedicle, and posterior views, X I, of a com- plete specimen, holotype, 110075a; (28) brachial interior, 2, paratype, 110075b; (30-34) pedicle, anterior, side, posterior, and brachial views, 2, of holotype; (29) brachial interior, X 2, paratype, 110074. Crown Point formation (bed B, division 3, of Brainerd and Seely), 4 mile north of State Normal School, Plattsburg, Plattsburg (15’) Quadrangle, N. Y. F. Glyptorthis multicostellata Cooper, new SPeCi€S......... eee. e sce eetcccccceeeees 371 (35) Brachial exterior, I, paratype, 116938c; (40) interior, <2, of same; (36, 39) respectively X I and X 2 enlargements of the pedicle exterior, holotype, 116038b; (37) exterior of a pedicle valve, X I, paratype, 116938a; (38) pedicle interior, X 2, paratype, 116938e. Ridley formation, on U. S. Highway 27, just northwest of Chickamauga Creek, Kensington (T.V.A. 106-SE) Quadrangle, Ga. G.. Ghyplorthisispe a 250 foc RR POR TR A Aged eee 383 (41, 42) Pedicle and brachial views of a complete specimen, X 4, figured speci- men, 116952a. McLish formation (zone 45), West Spring Creek, sec. 6, T. 2 S., R. 1 W,, Murray County, Okla. PLATE 47 GLYPTORTHIS A. Glyptorthis :bellatula. Cooper, new, sSpeCieS .'.'/< says < deiaio veins sishaetalety NisGia, «a anal aks 364 (1) Brachial exterior, X 1, paratype, 110015d; (2) pedicle exterior X 1, holotype, 110015a; (3) interior, X 2, of same; (4, 6) exterior and interior of the brachial valve, X 2, paratype, I10015e; (5) posterior part of brachial interior showing PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER cardinalia, X 2, paratype, 110015h; (7) pedicle exterior, X 2, paratype, I100I15g; (8) enlargement of exterior, < 4, paratype, I1100I15f. Chatham Hill formation, Virginia Highway 113 (Marion to Chatham Hill road) 6 miles north of Marion, Chatham Hill (T.V.A. 218-NE) Quadrangle, Va. Bs (Gly ptortiisiobese Gooper, Me wi SPECIES s,<)515:<)s si sletarateeeters lelafe tel state Solhs olalalts eNels ls otehavetetsieis (9, 11) Exterior and side views, 1, of the pedicle valve, holotype, 110068d; (10) brachial exterior, 1, paratype, 110068c; (12) brachial interior, X 2, paratype, 110068a. Bromide formation (Mountain Lake member), a little north of the middle of sec. 32, T. 2 S., R. 2 E., 2 to 3 miles northeast of Springer, Carter County, Okla. C.. Glyptortilis unsplicata Cooper, new species... 22s ies.eait UObeiaslaats CEI Rs (13) Pedicle exterior, X 2, paratype, 116947a; (14, 15) respectively X 1 and X 2 enlargements of an imperfect brachial valve, paratype, 116947c; (16) pedicle ex- terior, X 2, holotype, 116947b; (17) enlargement, X 3, of the ornamentation of the holotype. Benbolt formation (basal part of Echinosphaerites bed directly overlying the marble), } mile east of Speers Ferry, Clinchport (T.V.A. 188-NW) Quad- rangle, Va. D. Glyptortius equiconvera. Cooper, MEW. SPECIES.<.. <0, 0)<50,00 oriole 00.0 6 0 eal s sae) aetin bse (18-21) Respectively pedicle, posterior, side, and brachial views of a large com- plete specimen, X 1, holotype, 116934b; (30) enlargement, X 2, of anterior of holotype, showing ornamentation; (22-24) respectively brachial, pedicle, and posterior views of an imperfect specimen preserving both valves in contact, X I, paratype, 116934a; (25, 26) internal impression of the pedicle valve, «1 and 2, prepared by burning shell, paratype, 116034c; (28) plasticine replica of the pedicle interior, < 2, prepared from preceding impression; (27) brachial internal impression, XI, opposite side of paratype, 116934c; (29) plasticine replica of brachial interior, 2, prepared from preceding impression. Shippensburg formation (Pinesburg member—Echinosphaerites zone), west bank of Conococheague Creek, road cut on U. S. Highway 40, at Wilson, 7 miles west of Hagerstown, Md. PLaTE 48 ErmorTHIS, GLYPTORTHIS A] Endortins swmexhecita Cooper: new, Species. ccs cc ccc cm eine Oise sas gece r cae ¢ (1) Pedicle exterior, X 1, holotype, 1101042; (2, 3) side and exterior views of a large brachial valve, X 1, paratype, 110106b; (4, 5) two smaller brachial valves, <1, paratypes, I10106e, 110106d; (6) pedicle exterior, X 1, paratype, 110106c. Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. B, Givbrorimms alypia, Cooper, New Species. os neste es ain epics ip os ainie «ales See nla nice (7) Brachial exterior, X 2, holotype, 110067c; (8) pedicle interior showing nar- row diductor scars, < 2, paratype, 110067{; (9, 10) posterior and exterior of a pedicle valve, 2, paratype, 110067e; (11) brachial interior, X 3, paratype, 110067d. Effna-Rich Valley formations, locality same as above. GC. Giyptortnus bellarugosa. (CORTAG) © on fence see we dcle eye cole icles ah ee sey vies ce,5 aims (12) Pedicle interior, X 2, paratype, A.M.N.H. (not numbered) ; (13, 14, 16-18) respectively anterior, posterior, side, pedicle, and brachial views, x 2, of the lectotype, A.M.N.H. 900/1; (15) lectotype, X I. 1067 Page 372 379 368 384 369 363 1068 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page Decorah formation (Ion member ?), Mineral Point, Mineral Point (30’) Quadrangle, Wis. D. Glyptorthis virginica Cooper, New SPeCiGS....... 2.5 cece cece cece eeccscwese 379 (19-23) Respectively pedicle, brachial, anterior, side, and posterior views, I, of the holotype, 98209a; (24) pedicle interior, showing muscle scars, X 2, paratype, 98200d; (25, 26, 28, 29) respectively posterior, brachial, side, and pedicle views of a small but complete specimen, X I, paratype, 110082e; (33) enlargement, X 6, of exterior of same; (27) brachial exterior, X 2, paratype, 110082c; (30) pedicle interior showing muscle scars, X 2, paratype, 110082d; (31, 32) brachial interiors, X 2, paratypes, 110082b, 110082a. Wardell formation, near the road beside Lloyd Carter’s barn, 0.8 mile (by road), northeast of the Brick School at Rye Cove, Clinchport (T.V.A. 188-NW ) Quadrangle, Va. / PLATE 49 GLYPTORTHIS, HESPERORTHIS, ORTHAMBONITES, PRODUCTORTHIS, PTYCHOPLEURELLA, TAPHRORTHIS A. Productorthis americana Cooper, new SPECIES... 2... cece ec ccc ccc ccscsencceecens 336 (1, 2) Respectively 2 and X1 views of the brachial exterior showing the lamellae, paratype, 116887; (3, 4) respectively X 2 and X 1 views of the interior of the preceding specimen showing the cardinalia. Little Oak formation, road cut on U. S. Highway 31, 4 mile north of Pelham, Bessemer Iron District (15’) Quadrangle, Ala. B. Taphrorthis emarginata Cooper, new SPeCi€S..........eccceveccsceecrccceesccers 327 (5-9) Respectively posterior, anterior, side, pedicle, and brachial views of a com- plete specimen, 1, holotype, 116889a; (10) brachial view, X 2, of the same specimen, showing details of the ornamentation. Horizon and locality same as preceding. C.. Hesterorthis australis "Cooper, Gew SPECIES «2: c.se.0:0 «eho cals» mete aa ereisien aya nie oleae + 345 (11-15) Respectively brachial, anterior, side, posterior, and pedicle views of a com- plete and perfect specimen, I, paratype, 116914. Wardell part of Dryden formation, North of Gap Creek, 14 miles west of Arthur, Cumberland Gap (T.V.A. 153-SW) Quadrangle, Tenn. D. Orthambonites tennesseensis Cooper, MEW SPECIES. ........ccccccseeccsccescences 313 (16) Complete specimen seen in brachial view, X I, paratype, 116880; (17-21) respectively anterior, posterior, side, brachial, and pedicle views, x 2, of the preceding. Little Oak formation, cut on U. S. Highway 31, 4 mile north of Pelham, Bessemer Iron District (15’) Quadrangle, Ala. BE, AGP BEORENES. SI. 2 nia. 5.0 Stash 5 na Rascyayay ead satSuncans’ ofeTe% sia tesa tue ic) mp Shela step) souelai nists kaLaw ats ate 382 (22-26) Respectively pedicle, posterior, side, anterior, and brachial views of a com- plete specimen, X 2, figured specimen, 1169492. Lincolnshire formation (Hogskin member), 1.7 miles northeast of Hall Cross- road, Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. B (Ghyptor tis assunsiss Cooper, Mery Species eae e ap asale iors om ae ean er eek 361 (27-31) Respectively brachial, posterior, anterior, side, and pedicle views of a large perfect specimen, X 1, holotype, 110013}; (32) brachial view, X 2, of holotype. Ridley formation (lower third), east side of Marshall Knobs, 5 miles south of Murfreesboro, Murfreesboro (15’) Quadrangle, Tenn. G. ‘Glyptoriius subcircularis Cooper, New SPeEcies..2 . 3). «esis, eieias! 4s ttaraitie evs mes sieileins oe 374 (33-37) Respectively posterior, pedicle, side, brachial, and anterior views, X 1, of the holotype, 84015. Decorah formation (Ion member), Decorah, Iowa. PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER (38) Interior of the pedicle valve showing large muscle scars and teeth, X 1, paratype, 116940b; (39, 40) respectively X 2 and X1 views of the brachial interior showing cardinalia, paratype, 116940. Decorah formation (Ion member), cut on county road 1.1 miles east of U.S. Highway 52, on south edge of Cannon Falls, Minn. H. Pitychopleurella umplicata Cooper, new SPeCi€S.......00.se cece ce cecceteccnnenes (41, 42) Respectively exterior and interior of the brachial valve showing the car- dinalia, X 3, paratype, I10110b; (43, 44) exterior and interior of the pedicle valve, X 3, holotype, 1101 10a. Benbolt formation, 14 miles west of Rye Cove, Clinchport (T.V.A. 188-NW ) Quadrangle, Va. I. . Glyptorthis uniformis Cooper) new) species. PPOs Cea vee es (45-49) Respectively pedicle, posterior, side, anterior, and brachial views, X 1, of the holotype, 116945a; (51) pedicle view, X 2, of the holotype, to show the orna- mentation; (50) interior of the brachial valve, 2, paratype, 116945b. Benbolt formation, on the north side of U. S. Highway 19, 13 miles southeast of Hansonville Post Office, Brumley (T.V.A. 205-SE) Quadrangle, Va. PLATE 50 ATELELASMA, CYRTONOTELLA, DESMORTHIS, EREMOTOECHIA, GLYPTORTHIS, HESPERORTHIS, PTYCHOPLEURELLA A. ‘Cyrtonotelis magna Cooper, HEW SPECIES. jc os crckdis cesieclavieidasince tives ss cagtavccs (1-5) Respectively brachial, pedicle, posterior, anterior, and side views of a fine, complete specimen, X 1, holotype, 116897b; (6) brachial interior, X 2, paratype, 1168098. Sevier shale, east side of the road 0.2 mile north-northwest of Gooseneck, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. iB. Lremooechia siltcica Cooper, ew Species. van adaelote bhacs cies wsde's lo cmclea eee wate (7) Brachial view of a complete specimen, X I, paratype, 117063. Arline formation, 100 yards southwest of the Negro Cemetery, 4 mile north- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. CO FF doi ORS VE ag oe a PR ee UP ae (8-12) Respectively side, anterior, posterior, pedicle, and brachial views of a com- plete specimen, X 2, figured specimen, 116926; (13) brachial view, X 1, of same. Edinburg formation (about the middle of the Nidulites zone), beside the road at the lower end of Tumbling Run, 14 miles southwest of Strasburg, Strasburg (15) Quadrangle, Va. BD! GISPEOT ERIS SIE Se te alot os Sa ee he ee ae On TOE eg SA eee ee De Ee ane oe as ese Hapa aN (14-18) Respectively brachial, posterior, anterior, pedicle, and side views of a com- plete specimen, X 2, figured specimen, 116950. Little Oak formation, junction of Bailey Road and main road, SW4SW+ sec. 13, T. 19 S., R. 2 W., 13 miles northeast of Newhope Church, Vandiver (15’) Quadrangle, Ala. iE. ‘Glyprortins uncimuta Cooper, New. SPECleS « « (11) Brachial exterior of a complete specimen, X I, paratype, 116917; (12-15) respectively brachial, side, pedicle, and posterior views, X 2, of the same specimen. Chaumont formation, loose in the bed of Black River, just below the dam at the head of the island, Watertown, Watertown (15’) Quadrangle, N. Y. D. Hesperorthis colei Cooper, new SHECIES eae Cece de tates eee eget err oc (16) Brachial exterior, X 1, holotype, 48796; (17-21) respectively pedicle, ante- rior, posterior, brachial, and side views, X 2, of the same specimen. Decorah formation (Ion member), 8 miles south of Cannon Falls, Minn. E. Hesperorthis tenuicostata Cooper, new SPECIES. wee eiee gets Kee ease needy Yer ts (22-26) Respectively brachial, anterior, side, posterior, and pedicle views, X I, of the holotype, 116924; (27-31) respectively posterior, side, anterior, brachial, and pedicle views, X 2, of the same specimen. Lenoir formation (shaly beds with Hesperorthis near middle of quarry), quarry on the north side of U. S. Highway 11, 14 miles southwest of Phila- delphia, Philadelphia (T.V.A. 131-NW) Quadrangle, Tenn. (32-34) Respectively posterior, brachial, and side views of another complete speci- men, X 1, paratype, 109973a; (36-40) respectively brachial, anterior, posterior, pedicle, and side views, X 2, of the preceding. Lenoir formation, road on North Fork, 3 miles south-southeast of North Fork, Christiansburg (30) Quadrangle, Va. (35) Brachial interior, X 2, paratype, 109970a. Lenoir formation (25 feet above the Knox dolomite), Sweetwater, Sweetwater (T.V.A. 131-SW) Quadrangle, Tenn. Fh LiiesherortiusiSpie Batt. 8s detain. so matiars ors eared TeR ER eisai gs He ols RRS es * « (41) Brachial exterior, 2, figured specimen, 109972. Botetourt formation, junction of Virginia Highways 311 and 114, $ mile south- west of Catawba, Salem (15’) Quadrangle, Va. 1073 Page 353 358 348 347 357 360 1074 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, PLATE 55 ScAPHORTHIS A... Scaphorthis' virgimensts, Cooper,” new Species... ss .s.n0aes es eae feiss ls peels emis e's « (1, 2) Respectively & 2 and 1 enlargement of a brachial valve, paratype, 111788c; (3, 5, 6) respectively pedicle, side, and brachial views of a small but complete specimen, I, paratype, 111788a; (4) pedicle exterior, X I, paratype, 116903a; (7, 8) brachial interior tilted to show cardinalia and in normal view, X 2, holotype, 116903c; (9) pedicle interior showing thickened and wide ad- ductor track, X 2, paratype, 116903b; (10) posterior of the brachial interior showing cardinalia, X 3, paratype, 111788e; (11) pedicle exterior, 1, paratype, 116903e. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, on north slope of Walker Mountain, Burkes Garden (15’) Quadrangle, Va. B. Seaphorthis: perplesa.Coopet,. New, Species. .< 5% a5 ai adie > a6 Sinn cm cienanl'= Sete in, oobiagayaiaels (12) Pedicle interior, X 2, paratype, 111802d; (13-17) respectively pedicle, side, anterior, posterior, and brachial views, X 2, of the holotype, 111802c; (18, 19) pedicle and brachial views of a smaller complete individual, <2, paratype, 111802k; (20) pedicle interior, X 2, paratype, 111802t; (22) brachial interior, X 3, paratype, 111802-1; (21) brachial interior, X 2, paratype, 111802u; (23) another brachial interior with cardinal process, X 2, paratype, 111802s; (24-26) three views of the same specimen, an old individual showing thickening around the muscle area, X 4, paratype, 1118o0er. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. C. Scaphor this: spr1 ad 32. «atl SR eke VRE as oa Tee es (27-29) Pedicle, brachial, and side views, 2, figured specimen, 116908a. Horizon and locality same as preceding. D, Seuphorthis ayy Cooper, new Species. a4.1c) 5). We Da Lie cele» Syeyetinis aeaeinls delet mute (31-35) Respectively brachial, posterior, anterior, side, and pedicle views of an exceptionally well preserved individual, < 1, holotype, 111787. Lower Edinburg formation, 4 mile nearly north of Glendale School, 500 to 600 feet S. 70° W., of farmhouse at end of lane, Winchester (15’) Quadrangle, Va. (36, 37) Respectively 1 and X 2 enlargements of a brachial interior, paratype, 116905. Lower Edinburg formation (Cyrtonotella zone), 10 to 20 feet above sandy bed, 500 feet southeast of U. S. Highway 11, 1 mile northeast of Toms Brook, Strasburg (15’) Quadrangle, Va. (30) Brachial exterior, 1, paratype, 116907a; (38, 39) respectively * 2 and X 1 enlargement of an impression of the pedicle interior, showing pallial trunks, paratype, 116907d. Lower Edinburg formation, 4 mile north-northeast of Glendale School, Win- chester (15’) Quadrangle, Va. (40) Pedicle exterior, X 1, paratype, 116906a; (41) enlargement, X 3, of left side of the preceding specimen. Shippensburg formation, 1? miles west of Kauffman and 34 miles north of Greencastle, Chambersburg (15’) Quadrangle, Pa. PLATE 56 MULTICOSTELLA, PRODUCTORTHIS A. Productorthis americana Cooper, new SPeCi€S........ 2c cee ccccceeseccccrensccccs (1-4) Respectively posterior, pedicle, brachial, and side views, X41, of the 127 Page 505 504 506 503 336 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER holotype, 98184a; (5) specimen with valves naturally separated showing chilidial plate, interarea, and delthyrium, X 2, paratype, 98184b. Arline formation, old quarry on the north side of Marion, Marion (T.V.A. 218-SE) Quadrangle, Va. B. Praductorthas cosersd,.G VW alard) x i.crcw i's tiaarsaronele de bieie makrinteten slae Masta « € P's 90'S Beers (7, 25) Pedicle and posterior views of the cardinalia, X 2, hypotype, 109890a; (8-11) respectively side, pedicle, posterior, and brachial views of an exfoliated specimen, 1, figured specimen, 109899a; (12) exterior of a brachial valve, <1, hypotype, 109891a; (13) brachial interior showing adductor scars, X I, hypotype, 1o9891g; (14, 15) pedicle interiors, 1, hypotypes, 1o9891f, 109890b ; (18) brachial exterior, 1, hypotype, 109890c; (21-24) respectively pedicle, posterior, side, and brachial views of an unusually fine complete specimen, > 1, hypotype, 1o980od. Effna formation (slope of reef), Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. (6) Posterior view of the cardinal process, < 4, hypotype, 109895a; (19) brachial exterior, X 1, of same; (16) brachial view of a complete but exfoliated speci- men, XI, hypotype, rog895c; (17) impression of the pedicle interior prepared by burning shell, < 1, hypotype, 109896; (20) pedicle exterior of an exfoliated specimen, X 1, hypotype, ro98o5b. Effna formation, McNutt Quarry, 6 miles (airline) southeast of Ceres and 12 miles southwest of Bland, Burkes Garden (15’) Quadrangle, Va. RP IVIRESICOSICLA FOSCICUIGLE TUBULES): .-sc s.0 2 eee cots ae meme as sos aces ccd vac aac ketyaeyser (26, 27) Pedicle and brachial views, 1, of the holotype, 71493; (28) brachial view, X 2, of same. Little Oak formation, 4 mile north of Pelham, 660 feet east of the intersection of main Cahaba Valley road with Helena road, Bessemer Iron District (15’) Quadrangle, Ala. PLATE 57 DINOoRTHIS PA See TE SLAB OIG OS NN VUREO oy saca Siaisrsia clove: 2, para- type, 110403d; (14) pedicle interior showing pallial trunks, 2, paratype, 110403¢. Horizon and locality same as preceding. C. Daiicostetia gerontca Cooper, New Species... ! 2. cuca cdec casos cases s see ccs (15, 17) Respectively exterior and interior of the brachial valve, X 1, paratype, 110392c; (19) same, X 2, showing details of cardinalia and pallial trunks; (16) exterior of the pedicle valve, X 1, holotype, 110392f; (18) pedicle interior of an old specimen showing extravagant development of pallial marks, < 1, paratype, 110392a; (20) pedicle interior, 2, of another specimen showing pallial trunks, paratype, 110392g. Lincolnshire formation, Marble Bluff, 8 miles west-northwest of Loudon, Loudon (30’) Quadrangle, Tenn. PLATE 63 CHAULISTOMELLA, MULTICOSTELLA A/C Frgsels cto melee Sieg Uk O10 ae rath, ear ee gia Lsereialtinn ial altlo spe pt Sualyaciaieed = fie (1-5) Respectively brachial, pedicle, side, anterior, and posterior views of a com- plete specimen, X 1, figured specimen, 117990a; (6, 7) respectively X 1 and X 2 enlargements of the brachial interior, figured specimen, 117990b. Carters formation (O-roplecia bed), quarry 0.3 mile north of Gate City, Leeds (15’) Quadrangle, Ala. B. Mulitcastella robusta, Cooper, new SPECIES: 3 leh inyeed dacs o cbretsrerseye oaloepelaeh o& de (8-11) Respectively pedicle, anterior, brachial, and side views of a complete speci- men, X 1, holotype, 116992a; (12) enlargement, X 3, of surface of same. Sevier formation, + mile north of Gooseneck, southwest corner of Louisville (T.V.A. 138-SE) Quadrangle, Tenn. C. Multtcosieila quadrata Cooper; new Species... cole ee led cece ee bocce btewess (13, 14) Respectively brachial and pedicle views of a small individual, 1, para- type, 98180a; (20) pedicle interior showing large muscle area, X I, paratype, 98189c; (21) brachial interior, X 2, paratype, 98180¢. Whistle Creek formation, on Whistle Creek, 2 miles northwest of Lexington, Lexington (15’) Quadrangle, Va. (15-19) Respectively pedicle, brachial, side, posterior, and anterior views, X I, of the holotype, 116989a. Whistle Creek formation, on U. S. Highway 60, 100 yards southeast of Whistle Creek, 2 miles northwest of Lexington, Lexington (15’) Quadrangle, Va. DD; Maiteasiciia picata’ Cooper; new Species... ois settanes ce dene scence es eee casks (22, 23) Respectively brachial and pedicle views of a large specimen, * I, para- type, 110425e; (24-26) respectively pedicle, brachial, and side views of a young specimen, X I, paratype, 110425b; (27) brachial interior, * 1, holotype, 110414b; (28) pedicle interior belonging to preceding valve, 1, holotype, 110414c; (29) pedicle interior, 2, showing details of muscle area, paratype, 110414a. Lincolnshire formation, 4 mile north of Eidson on old lane, Kyles Ford (T.V.A. 170-SE) Quadrangle, Tenn. 1079 Page 419 445 426 424 423 1080 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. PLATE 64 CHAULISTOMELLA, MULTICOSTELLA A. Chaulistomella ridleyensis Cooper, New SPeCieS........cccccenscenceteccceccnnes (1-5) Respectively pedicle, posterior, side, anterior, and brachial views of a com- plete specimen, 1, holotype, 117007. Ridley formation (lower third), Marshall Knobs, 5 miles south of Murfrees- boro, Murfreesboro (15’) Quadrangle, Tenn. B. Multicostella rectangulata Cooper, new SPeCiCS. .. 0.6 .c0 scene cecnceceneccccensens (6-9) Respectively pedicle, side, anterior, and brachial views of a complete but imperfect specimen, <1, holotype, 116991. Yellow limestone above 25-foot sandstone at base of Eureka group, saddle just north of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. C: Mutncestella barca (Raymond). co. cck elects cece die pine cure smite clement ole ere ence cake (10) Pedicle interior, X 1, hypotype, 110371d; (11) brachial interior, X 1, hypo- type, 110371b; (12) brachial exterior, 1, hypotype, 110371a; (13) brachial exterior, X 1, hypotype, 110372b; (14) pedicle exterior, X 1, hypotype, 110372a ; (15) pedicle exterior, X I, hypotype, 11037T1e. Chatham Hill formation, Grayson Farm, 4 miles southwest of Bland, Bland County, Va. (16) Brachial interior, X 14, showing cardinalia and short median ridge, hypo- type, 116984h. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. D. Multicostella semisulcata Cooper, NeW SPECIES... 2... cc sccccecc cc ccec coe ceseas ces (21-23) Respectively side, pedicle, and posterior views of a complete specimen, X 1, holotype, 110474b; (24) brachial view, X 2, of the holotype; (17) brachial interior, X 1, paratype, 110474a; (18) posterior of preceding, X 2, showing car- dinalia; (10, 20) respectively 1 and X 2 enlargements of the brachial interior, showing thickened supports of brachiophores, paratype, 110474e; (25, 26) respec- tively X 1 and X 2 enlargements of the pedicle interior, paratype, 110474c. Lincolnshire formation (Hogskin member), nearly north of Hayes’ house along small road beside fence, east of U. S. Highway 25E, Evans Ferry section, north of Indian Creek, Howard Quarter (T.V.A. 162-NW) Quadrangle, Tenn. PLATE 65 CHAULISTOMELLA, DINORTHIS A. Chaulistomella inaequistriata Cooper, new SPeCieS........ssccccecsecerseecsccers (1-5) Respectively pedicle, side, brachial, anterior, and posterior views, X 1, of the paratype, 110519a; (6) pedicle view of a complete specimen, X I, paratype, IIO510f. Wardell formation, Lloyd Carter’s barn, 0.8 mile by road northeast of school at Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. B. Chaulistomella, brevis, ( Woillard))., ..0j0)\ajdvaisiaym aralel oles mypunsnieyel a vated soy sin einialera, wield = bharlals (7, 9-12) Respectively brachial, side, anterior, posterior, and pedicle views of a complete specimen, 1, hypotype, 110462b; (8) brachial interior, X 1, hypotype, 110462d. Benbolt formation (100 feet above Echinosphaerites zone), on Virginia High- way 74, 54 miles east of the junction with U. S. Highway 54, Hilton (T.V.A. 197-NW) Quadrangle, Va. 127 Page 443 425 416 427 435 433 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER C. Dinorthiseswceioye (Ns HetWanchell i, x cata sate fe Rais ete atlas ds oi aislewie aysisting (13-17) Respectively anterior, side, brachial, posterior, and pedicle views of a complete individual showing divided and intercalated costae, X 1, figured speci- men, 118020a. Decorah formation (Ion member), road cut 1.1 miles east of U. S. High- way 52, south side of Cannon Falls, Goodhue County, Minn. D. Chaulsstomelia rel avigadta >OWallard)). . hens 5. ce pIsaNd. he PS. BIS MIO BAO (18) Brachial interior, 1, hypotype, 110473b; (10, 20) respectively side and pedicle views of a complete specimen, 1, hypotype, 110473a. Benbolt part of Dryden formation (300 feet above Stones River formation), 100 yards west of the store, junction of Tennessee Highway 33 and Flint Creek road, Maynardville (T.V.A. 145-SE) Quadrangle, Tenn. E. Chaulistomella lebanonensis Cooper, new SpECi€S....... cece ccc ccccceeeseeees (22, 24-27) Respectively side, brachial, posterior, anterior, and pedicle views, X 1, of the holotype, 84024a; (28) pedicle view, X 2, of holotype. Lebanon formation, Lebanon, Wilson County, Tenn. (29, 30) Respectively X 1 and X 2 enlargements of the brachial valve, paratype, 110524a. Lebanon formation, Columbia, Maury County, Tenn. (23) Pedicle interior, X 1, paratype, 1105332. Lebanon formation, on U. S. Highway 41, 3 mile south of Knox Branch, 9g miles southeast of Murfreesboro, Rutherford County, Tenn. (21) Posterior of brachial interior showing cardinalia, 2, paratype, 110523a. Lebanon formation, on U. S. Highway 70N, 4 mile west of Rome, Smith County, Tenn. PLATE 66 CHAULISTOMELLA A. Chaulistomella superlata Cooper, new SPECIES.......-. cece cece cece eee c acces ceene (1-5) Respectively brachial, pedicle, anterior, posterior, and side views of a com- plete specimen, <1, holotype, 110506a; (6) pedicle interior, <1, paratype, 110506f; (7) brachial interior, < I, paratype, 110506e; (8) pedicle exterior of a small complete specimen, X I, paratype, 110506b; (9) another pedicle interior, X I, paratype, 110506d. Ridley formation, cut on U. S. Highway 27, just northwest of Chickamauga Creek, Kensington (T.V.A. 106-SE) Quadrangle, Ga. beh Chautistomalla «brevis: GW illard) wis 22.20% 425%455 bb Dae eee ee ted ade eh ees ce wen (10-14) Respectively posterior, anterior, side, brachial, and pedicle views of a large complete specimen, X 1, hypotype, 116995a; (19) enlargement of surface, X 2, of pedicle valve of same hypotype. Upper Benbolt formation, 0.1 to 0.2 mile north of the road, 1.1 miles northeast of Lee Valley, Lee Valley (T.V.A. 171-NW) Quadrangle, Tenn. (15-18) Respectively brachial, anterior, side, and pedicle views of another com- plete and somewhat alate specimen, I, hypotype, 116994a. Benbolt formation, south side of Mount Hagan School, Hilton (T.V.A. 197-NW) Quadrangle, Va. ©) Chaghstomettiaurzcuis \CW lard) Pieces tsetse eae ae oct ere ele Pee le ted sce (20-23) Respectively brachial, pedicle, side, and anterior views of a complete speci- men, X 1, somewhat narrower and slightly more coarsely costellate, hypotype, 116994e; (24) pedicle interior, <1, hypotype, 116994b; (25) another pedicle interior, <1, hypotype, 116994d; (26, 27) respectively 1 and X 2 enlarge- ments of the brachial interior, hypotype, 116994c. Horizon and locality same as preceding. 437 444 433 433 1082 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. PLATE 67 CHAULISTOMELLA A. Chaulistomella ridleyensis Cooper, new SPe€Ci€S..........ceecccceceeeweeescerese (1-5) Respectively pedicle, anterior, brachial, posterior, and side views of a com- plete specimen, I, paratype, 117008a; (6) interior of a large pedicle valve showing muscle scars, X I, paratype, 117008f{; (7) interior of the brachial valve, X I, paratype, 117008b. Ridley formation (lower 20 feet), Marshall Knobs, 5 miles south of Murfrees- boro, Murfreesboro (15’) Quadrangle, Tenn. B. Chaultstometia. obese: Cooper; siew! species:...£:). sos iVte) eee OS) Ws FRR BOSH (9-13) Respectively side, brachial, posterior, anterior, and pedicle views of a com- plete specimen, XX I, paratype, 110561a. Bromide formation (Mountain Lake member), West Spring Creek section, east of Pooleville, Murray County, Okla. (8) Exterior of a large specimen seen in pedicle view, I, paratype, 117991a; (14-16) respectively side, brachial, and pedicle views of a specimen with details of the ornamentation well preserved, < 1, holotype, 110562a. Bromide formation (Mountain Lake member), sec. 25, T. 2 S., R. 1 E., 3 mile west of U. S. Highway 77, Carter County, Okla. C. Chanlistomella nitens Cooper; ‘new, spectesscisi. 1. om. J. S23. SS LEME, DE os (17-21) Respectively anterior, side, posterior; brachial, and pedicle views, X 1, of the holotype, 117003a; (22) interior of the brachial valve, 1, paratype, 117003c; (23) cardinalia of the preceding enlarged, < 2, to show details. Note accessory tooth on outside of socket. Bromide formation (Mountain Lake member), road cut on the east side of Oklahoma Highway 18, 1.8 miles south of Sulphur, Murray County, Okla. D. Chaulistomella mundula Cooper, new Species. (224... 62. neta near nme cae ger cnane (24-28) Respectively posterior, anterior, side, pedicle, and brachial views of a com- plete specimen, X I, holotype, 117000a; (29) interior of the pedicle valve, X 2, showing details of the muscle and pallial marks, paratype, 1170006. Horizon and locality same as preceding. PLATE 68 CAMPYLORTHIS, CHAULISTOMELLA, MULTICOSTELLA Az, Multicostella: platys (Billings) <0 isis os cc's ao cess Rat ey aude ane ete (1-3) Pedicle, side and brachial views of the holotype, X 1, G.S.C. 1034. St. Martin formation, Island of Montreal, Quebec, Canada. (4) Brachial interior, X 2, hypotype, Carnegie Mus. 5467. Crown Point formation, near Fair Grounds, Plattsburg, Plattsburg (15’) Quadrangle, N. Y. ; B. Campfylorihis subplana Ulrich and ‘Cooper... vn icaarg - detainee see meeobwient sade (5, 6, 8, 11) Respectively pedicle, pedicle tilted to show interarea, brachial, and side views of a complete individual, < 1, holotype, 10o8199a; (12) posterior view of preceding, X 14, showing pseudodeltidium and chilidium; (7) pedicle interior, XI, paratype, 108199c; (9) brachial interior, 1, paratype, 108199b; (10) posterior of brachial interior, 2, showing cardinalia in detail, paratype, ro8190d. Barnhart formation, on old road, 1 mile northwest of Chicago Summer School Camp, NW4SW3 sec. 32, T. 37 N., R. 9 E., Weingarten (15’) Quadrangle, Mo. C. Chaulistomella inaequistriata Cooper, NEW SPECIES... 22... ce eee e ccc ccesecccenees (15-17, 19, 20) Respectively pedicle, side posterior, anterior, and brachial views of a complete specimen, X I, holotype, 98212a; (13, 18) respectively 1 and X 2 127 Page 443 44l 431 435 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1083 Page enlargements of the pedicle interior, showing muscle area and accessory articu- lating ridges on the cardinal extremities, paratype, 98212g; (14) posterior portion of the brachial interior showing cardinalia, <2, paratype, 110484b. Wardell formation, Lloyd Carter’s barn, 0.8 mile by road northeast of Rye Cove School, Clinchport (T.V.A. 188-NW) Quadrangle, Va. PLATE 69 CAMPYLORTHIS, CHAULISTOMELLA AS iGampplorimestdciecia (CContad )\. < accscs sic siwisciea sicissc.cileeias’sin ene 858 8s © e)sicjere em csie e 430 (1) Posterior view showing pseudodeltidium and chilidium, > 2, hypotype, 36101a; (2-6) respectively posterior, anterior, brachial, side, and pedicle views, x 1, of the preceding specimen. Platteville formation, Highland, Iowa County, Wis. B. Chaulistomella rectangulata Cooper, new SPECIES. .... ccc cee een e reece ceeceescens 442 (7-11) Respectively side, posterior, brachial, pedicle, and anterior views of a com- plete specimen, X I, paratype, 117005a. Wardell formation (Hesperorthis-Camerella beds), road cut on U. S. High- way 25E, 4 mile north of Indian Creek, Evans Ferry section, Howard Quarter (T.V.A. 162-NW) Quadrangle, Tenn. (12-16) Respectively posterior, side, pedicle, anterior, and brachial views of a com- plete specimen, XI, holotype, 117006. Wardell formation (just above Hesperorthis bed), same locality as preceding. C. Chaulistomella inaequistriata Cooper, new SpecieS..........-cececece cece eeeeeeee 435 (17-21) Respectively brachial, posterior, anterior, side, and pedicle views of a com- plete specimen, X I, paratype, 116997b. Wardell formation (20 feet below the top), on U. S. Highway 58, 4 mile west of Danlboone Yard, Clinchport (T.V.A. 188-NW) Quadrangle, Va. D. Chaulistomella inaequistriata Cooper, new SPECIES. ...... cece eee e ween cece enone 435 (22) Pedicle interior, X 2, showing muscle area, pedicle callist, and articulating ridges on cardinal extremity, paratype, 98212f. Wardell formation, Lloyd Carter’s barn, 0.8 mile by road northeast of Brick School at Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. E. Chaulistomeila lebanonensis Cooper, new SPECIES... ....ccccnccsev enc ceecawer cues 437 (23) Brachial interior, 2, showing unusual development of pallial trunks, para- type, 110534a. Lebanon formation, cut on U. S. Highway 41, 3 mile south of Knox Branch, 9 miles southeast of Murfreesboro, Tenn. PLATE 70 CHAULISTOMELLA, VALCOUREA A. Valcourea semicarinata Cooper, Mew. SPECIES « as one <0 0 ls 00,06 see aj0j0.0\0:8 oso sb ecleiel eles 410 (1, 2) Pedicle and brachial exteriors, X 1, paratype, 98179; (3) pedicle exterior, <1, of the holotype, 110228d; (6) posterior showing cardinal process, X I, holotype; (8, 9) pedicle and brachial exteriors, X 2, of the holotype; (4, 10) respectively X 1 and X 2 enlargements of the pedicle interior, showing form of muscle scar, paratype, 110228e; (5) interior of an imperfect brachial valve, X 2, paratype, 110228g; (7) posterior view of the preceding, 3, showing carinate myophore of cardinal process. Arline formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A, 218-NW) Quadrangle, Va. 1084 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. B. A, Chaulistomella magna (Schuchert and Cooper) ......c.0.scccccccccccscscccccees (11, 12, 16, 17, 22) Respectively brachial, pedicle, posterior, anterior, and side views of a fine, complete specimen, 1, hypotype, 110539c; (23) exterior, X 2, of preceding; (13, 14, 18, 19, 20) respectively brachial, pedicle, posterior, anterior, and side views of another complete specimen, X I, hypotype, 110545; (15) bra- chial interior, <1, paratype, 116999b; (21) pedicle interior, < 14, showing superb development of pallial trunks, paratype, 110543a. Bromide formation (Pooleville member—O-oplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. PLATE 71 Muliscostella, suicata Cooper, iew Species’. ©. ts shes ct tees coe ences cee tem ces (1-3) Respectively pedicle, side, and brachial views of an incomplete specimen showing the strong fold and sulcus, & 1, holotype, 116993. Bromide formation (Mountain Lake member—Valcourea transversa bed), on Spring Creek, sec. 17, T. 2 S., R. 1 W., Murray County, Okla. (4) Another imperfect pedicle exterior, 1, paratype, 110459. Bromide formation (Mountain Lake member), NE. corner sec. 1, T. 2 S., R. 2 W., 3 miles east of Pooleville, Murray County, Okla. Chaulistamelia crassa» Cooper | Rew, SPECIES. 136 cet h waetecots «ets keels sl otrateuene per seene (5-9) Respectively posterior, anterior, side, brachial, and pedicle views, X 1, of the holotype, 116996a; (9a) interior of the pedicle valve, X 1, paratype, 1169096b. Bromide formation (Mountain Lake member—just above bryozoan bed or Mimella zone), on Oklahoma Highway 99, 3 miles south of Fittstown, Pontotoc County, Okla. Valeourea ventrocarinaia CB Utts ) ated Gai. Fa, aateisinlatnge a bitee los lassen « Seles ciate, 6 euoee (10-14) Respectively posterior, anterior, side, pedicle, and brachial views of a com- plete, nearly perfect specimen, X 1, hypotype, 117992a. Little Oak formation, junction of Bailey Gap and Cahaba Valley roads, 13 miles northeast of Newhope Church, SW4iSW3 sec. 13, T. 19 S., R. 2 W., Vandiver (15') Quadrangle, Ala. Multicostellanfasciculata: (Butts) erccccwiecmiccccctsico ne csteleelsise sia aise sioia leita Sedaris (15-19) Respectively anterior, posterior, brachial, pedicle, and side views of a nearly complete specimen, X 1, hypotype, 116987; (20) brachial view of same, < 2, showing ornamentation. Horizon and locality same as preceding. Plectorthisyaustralis Cooper News Speclesieeisie we caistoieialel states. o(aiole svoleveiois ai levatereieeies (21-25) Respectively pedicle, side, anterior, posterior, and brachial views, X 1, of the holotype, a complete specimen, 117019a; (26) brachial view, 2, of the holotype, showing the ribbing in detail. Little Oak formation, road cut on U. S. Highway 31, 4 mile north of Pelham, Bessemer Iron District (15’) Quadrangle, Ala. Camerella oklahomensis Cooper, new SPECICS..........cceccccccccccccrcvceceens (27-31) Respectively posterior, brachial, pedicle, anterior, and side views, X 1, of the holotype, 117993; (32-35) respectively side, anterior, brachial, and pedicle views, X 2, of the holotype. Bromide formation (Pooleville member—so feet below the top), 0.1 mile southeast of Observation Point on the Scenic Road to Falls Creek, about 1 mile southeast of U. S. Highway 77, Murray County, Okla. CAMERELLA, CHAULISTOMELLA, DINORTHIS, MULTICOSTELLA, PLECTORTHIS, VALCOUREA 428 434 414 418 447 574 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER G. Mulistcostella semisulcata Cooper, new species... ...cc0scescccenccccceccecececes (36-40) Respectively posterior, side, anterior, pedicle, and brachial views of a large specimen, X I, paratype, 110433. Lincolnshire formation (Hogskin member), 0.4 mile northeast of Red Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. Ely Dinoriias) penusia Cooper, Tew. SPECIES <<. x teicisioa,0micieienina. # Hct. c bck eck aseesd Gemee bn « (41-45) Respectively posterior, anterior, side, brachial, and pedicle views of a small but perfect specimen, X 1, paratype, 110286b; (46-50) respectively brachial, posterior, side, anterior, and pedicle views of a large and perfect specimen, X 1, holotype, 110286a. Red Knobs formation, 2 miles southeast of Kiser, Meadow (T.V.A. 139-NW) Quadrangle, Tenn. PLATE 72 CHAULISTOMELLA, DINoRTHIS, VALCOUREA A EMBOGtTS IPMS (COOPer, NEW. SPECIES". cc occ voice cts tinas oula cclieanasiacon cacae ue 6 (1-5) Respectively brachial, posterior, anterior, pedicle and side views of a nearly complete specimen, X< 1, holotype, 1160974. Sevier formation, east side of the road 2.7 miles S. 7° W. of Athens, Athens (T.V.A. 125-NE) Quadrangle, Tenn. B. Chaulistomella inaequistriata Cooper, Mew SPeCieS....... ccc eee ccc ccc cccecsees (6-10) Respectively pedicle, posterior, anterior, brachial, and side views, X 1, of a paratype, 110488a; (11) pedicle interior, X 1, paratype, 110488b. Dryden formation, Lone Mountain to Tazewell road, 14 miles northeast of Lone Mountain, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. (12, 13) Respectively 1 and X2 views of the brachial interior, paratype, 116908a. Dryden formation, road along Little Sycamore Creek, 0.35 mile northeast of Halls School, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. > Vatcourea plana-Cooper; new Species s :.. 664555 6.025 565030555555 56,5 0% Sarge Doo Ie (14-18) Respectively pedicle, posterior, anterior, side, and brachial views of a complete specimen, < I, holotype, 116967. Yellow limestone on 25-foot sandstone at base of Eureka group, 2 miles north of Martin Ranch, Roberts Mountains (1°) Quadrangle, Nev. (19) Brachial view of an alate specimen, X I, paratype, 116968a; (20, 21) respec- tively X 1 and X 2 enlargements of a partially exfoliated specimen showing part of the pallial trunk system, paratype, 116968b. Same as preceding but 3 miles north of Martin Ranch. D. Valeoureatransversa, Cooper, MEW SPECIES 2, of the preceding. Little Oak formation, junction of main road and Bailey Gap road, SWiSW4 sec. 13, T. 19 S., R. 2 W., 13 miles northeast of Newhope Church, Vandiver (15’) Quadrangle, Ala. C. Valeourea plana-Cooper, \ mew Species 4 isis aj. <,cia'dla ste sie Sy oysie,tis. s+ imme 8 agi ers erastles S.a (15) Impression of the interior of a pedicle valve, X 1, paratype, 110265a; (16-19) respectively brachial, pedicle, side, and posterior views, X 2, of the preceding specimen; (20) poorly preserved pedicle exterior, 2, paratype, 110265c. Yellow limestone above 25-foot sandstone, crest of Antelope Range, 3 miles south of Ninemile Canyon, Roberts Mountains (1°) Quadrangle, Nev. (21) Exterior of an imperfect pedicle valve, 1, paratype, 117094a; (22) same, X 3, showing some details of the ornamentation. Same formation as preceding, saddle just north of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. DD VW QUE OUI OG: SPs. Dido: iain igi s:0.6 9:5 %00\0)istdie; be ovays) ooh gaates: = GAS OaN Raye RED SITIES Te RIEU eter (23, 24) Respectively 1 and X 2 enlargements of the pedicle interior, figured specimen, 110257; (25) exterior, X 1, of the same specimen. Lincolnshire formation, Marble Bluff, 8 miles west-northwest of Loudon, Loudon (30’) Quadrangle, Tenn. Be LCT EE SB Mii a te ai ole ale acinus exe's na client a al eas Me hn xy dla to ere Re Coe (26, 27) Pedicle and brachial views of a nearly complete specimen, X 1, figured specimen, II0203a. Lincolnshire formation, Marcem Quarry, 2 miles west of Gate City, Gate City (T.V.A. 188-NE) Quadrangle, Va. PLATE 74 VALCOUREA A... Malcourea decrert "Cooper, Mew SPECIES. 26. foe ste sd emcee cote ce cama an ols cde cent. (1) Pedicle interior, 1, paratype, I102IIc; (2, 3, 11, 13) respectively brachial, pedicle, posterior, and side views, X I, of the holotype, t10208a; (6) posterior view, X 2, of holotype; (4) brachial exterior, 1, paratype, I1102I2a; (5) an- other pedicle interior, 1, paratype, 110212b; (7) brachial exterior of a wide- hinged specimen, X 1, paratype, 110208c; (8, 12) brachial interior showing pal- lial trunks, X I and X 2, paratype, 110211b; (9) pedicle interior of a small, wide-hinged form, I, paratype, 110208e; (10) brachial interior in posterior 127 Page 408 414 409 415 415 407 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER view showing myophore of cardinal process, X 1, paratype, 110208b; (14) same, X 3, showing carinate myophore. Tulip Creek formation (top), SE{SW3 sec. 22, T. 2 S., R. 3 E., on west slope of hill in road ditch, 14 miles west of Nebo, Murray County, Okla. B: Valéourcaisirophomenomes CRaymond) i208 rey i lees eb ene: (17, 22) Side and brachial views of a complete specimen, X I, holotype, Carnegie Mus. 5450; (15) brachial view, X 2, of same. Crown Point formation, Plattsburg, Plattsburg (15’) Quadrangle, N. Y. (16) Pedicle interior, < I, paratype, Carnegie Mus. 5467; (19) posterior of same specimen, 2, showing muscle area; (18, 21, 20) respectively brachial, pedicle, and posterior views of a nearly perfect specimen, X 2, paratype, Carnegie Mus. 5492; (25) part of pedicle valve, & 4, of preceding specimen; (23) pedicle inte- rior, X 3, paratype, Carnegie Mus. 5466; (24) pedicle exterior showing fold, X 2, paratype, Carnegie Mus. 5467 (on same piece as specimen represented by fig. 16). Crown Point formation, near the Fair Grounds, Plattsburg, Plattsburg (15’) Quadrangle, N. Y. PLATE 75 V ALCOUREA A. Valcourea brevicarinata Cooper, New SPeCCi€S.......000 se ccccccccccestecceecenien (1) Pedicle interior, X 2, paratype, 1102482; (3) exterior, < 1, of the preceding; (2) brachial interior, X 2, paratype, 110248b; (4, 5) respectively X 1 and X 2 enlargement of the brachial valve of a complete specimen, holotype, 110248c. Upper Arline formation, on north side of wagon road in glade, 4 mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. Bin alcove GustrinasCoo pet: Mey, SPECIES... FRIED J 2, showing spondylium and lateral plates on the edge of the delthyrium, hypotype, 110117a; (29) posterior view, X 2, of a complete specimen, hypotype, A.M.N.H. 25048/1; (31) brachial exterior, X 1, hypotype, A.M.N.H. 25048/3; (32) enlargement of the muscle-attachment surface of the pedicle valve, hypo- type, Y.P.M. S359; (34) brachial interior showing adductor field, X 2, hypo- type, IIOII7c. Crown Point formation, Sloop Bay, Valcour Island, Lake Champlain, Platts- burg (15’) Quadrangle, N. Y. G. Atelelasma dorsoconvexum Cooper, NEW SPECICS...... 2.2 eee e cece creer eeeeeeeee (35) Impression of the pedicle interior, <1, paratype, 110129a; (36) plasticine replica of part of the exterior of a pedicle valve, X 2, paratype, 110129d; (37) another pedicle impression, 1, paratype, 110129b; (38) brachial interior im- pression, X I, paratype, 110120c. Basal Athens, just east of road intersection, 2} miles south-southeast of Rice- ville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. (39) Brachial interior, < 2, paratype, 110128b. Basal Athens, 600 feet S. 40° E. of the railroad crossing 1 mile northeast of the courthouse, Athens, Athens (T.V.A. 125-NE) Quadrangle, Tenn. PLATE 81 ATELELASMA, PLECTORTHIS A. Atelelasma variabile Cooper, NEW SPECICS.... 1.6 eee eee eee cette eter eee e ne eeees (1-5) Respectively side, brachial, pedicle, posterior, and anterior views of a com- plete specimen, X 2, holotype, 117015d; (6) posterior view, X 3, showing plates on side of delthyrium of holotype. Lenoir formation (calcarenite below the Mosheim limestone), southwest side of the cemetery behind Friends Church in the north corner of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. B. Atelelasma sulcatum Cooper, NEW SPECIES... 1... cece cece eee eee eee eee een cnees (7-11) Respectively side, posterior, anterior, brachial, and pedicle views, X I, of the holotype, 117013; (12) posterior view, X 2, of the holotype showing lateral plates; (13) part of pedicle valve of holotype, X 2, showing ornamentation. Tulip Creek formation (152 feet above the top of the basal sand), first creek east of U. S. Highway 77, SES/NE{NE} sec. 25, T. 2 S., R. 1 E., Carter County, Okla. C. AtePehasmma ash oo Ps Oe colwnleate alncieiainta oe sia cee ap alenacasecsiyneie ce siasieis (14) Brachial interior, < 2, figured specimen, 117016. 526 520 519 525 524 1092 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Botetourt limestone, junction of Virginia Highways 311 and 114, 4 mile south- west of Catawba, Salem (15’) Quadrangle, Va. D. Plectorthis lebanonensis Cooper, new species... 4. 25! 220 Ek I, le oa A SOY (15) Brachial exterior, X 2, paratype, 110834a; (16) brachial interior, < 2, para- type, 110834b; (17) pedicle exterior, < 2, holotype, 110834c. Lebanon formation, on Tennessee Highway 16, 3.6 miles northwest of its junc- tion with U. S. Highway 241, Shelbyville, Bedford County, Tenn. Ee Plectorthts tenuis ‘Cooper, new: Species siden oie Me Mo eilalcte tee ties Dee ns (18) Exfoliated pedicle valve showing impression of the muscle area, X I, para- type, 117027; (19) impression of the muscle area, X 2, of the preceding. Benbolt formation, south side of Mount Hagan School, Hilton (T.V.A. 197-NW) Quadrangle, Va. (20, 21) Respectively X I and X 2 enlargements of the pedicle valve of a complete specimen, paratype, 117028a; (22-24) respectively pedicle, anterior, and brachial views of a complete specimen, X 2, paratype, 117028b; (25-27) respectively bra- chial, side, and posterior views, X 2, of the holotype, 117028c; (28, 29) side and pedicle views of a large specimen, X 2, paratype, 117028d. Benbolt formation (base), 0.2 mile south of the middle fork of Moccasin Creek, 14 miles due south of Hansonville, Hansonville (T.V.A. 205-SW) Quadrangle, Va. PLATE 82 ATELELASMA, CYRTONOTELLA, HESPERORTHIS, ORTHAMBONITES, PIONODEMA, PRODUCTORTHIS, PTYCHOPLEURELLA A. Hesperorthis:?) costellata Cooper, new species: 20 10. YoU en, Hl) I (1) Brachial view, X 2, of the holotype, 116918; (2-6) respectively anterior, posterior, side, pedicle, and brachial views, X I, of the holotype. Botetourt formation, north side of Virginia Highway 114, 2.3 miles west of the Montgomery-Roanoke County line, 12 miles northeast of Blacksburg, Va. B. Hesperorthis tenuicostata Cooper, NEW SPECIES......... cece cece sec ecsceenecesees (7-11) Respectively posterior, anterior, side, brachial, and pedicle views of a com- plete specimen, X 2, paratype, 116923. Lenoir formation (shale streak in granular beds below the Mosheim lime- stone), behind the Quaker Church, north corner of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. C. Productorthis americana Cooper, Mew) SPCCles.).).is a oie ole dikayy w ibieleis ele = oe Some ole 1 (12) Exterior of a pedicle valve, 1, paratype, 116886b. Horizon and locality same as A above. D. Orihambonites tennesseensis Cooper, NEw SPECIES..... 0... cece cece sence eeetcecs (13-17) Respectively brachial, anterior, side, posterior, and pedicle views of a com- plete specimen, X 1, holotype, 116878b; (18) brachial view, < 14, of the pre- ceding specimen; (19) brachial interior showing cardinalia, 2, paratype, 116878d; (20) pedicle interior showing thickened anterior end of muscle area, X 2, paratype, 116878a. Arline formation, 100 yards southwest of the Negro Cemetery, 4 mile north- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. E. Cyrtonotella subquadrata Cooper, NEw SPeCi€S. 2... 6. sap ccc cscs ces wle contig pieces (21, 22) Brachial and pedicle views of an imperfect specimen, <1, paratype, 116895. Benbolt formation, north side of road, 1.1 miles northeast of Lee Valley, Lee Valley (T.V.A. 171-NW) Quadrangle, Tenn. 127 Page 449 454 350 357 336 313 324 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER F. Pionodema crassipunctata Cooper, new SPeCi€S..... cece eee cere ee ee eer ee ee teeees (23-27) Posterior, anterior, brachial, side, and pedicle views, X 1, of the holo- type, 117326. Benbolt formation (base), 0.2 mile south of middle fork of Moccasin Creek, 14 miles south of Hansonville, Hansonville (T.V.A. 205-SW) Quadrangle, Va. G. Hesperorthis virginiensis Cooper, new SPeCieS........eeeeeeee eee e cece ee eeeeeees (28-32) Respectively anterior, posterior, side, brachial, and pedicle views of a com- plete specimen, X 1, holotype, 1169272. Oranda formation, just west of the junction of Virginia County Highways 617 = 910 and 777, on 777, + mile north of Green Mount Church, 4 to 5 miles north of Harrisonburg, Broadway (15’) Quadrangle, Va. H. Ptychopleurella globularis Cooper, new SPeCi€S.......eeeeee cece seen eee erec eens (33, 34) Brachial and posterior views of a complete specimen, X 2, holotype, 116955c; (35) brachial view, X 3, of the preceding specimen; (36, 37) interior of a small brachial valve, X 3, tilted to show cardinalia and in normal interior view, paratype, 116955d; (38) another brachial interior showing the cardinalia, < 3, paratype, 116955a; (39) pedicle interior showing elongate diductor scars and thickened adductor track, X 3, paratype, 116955b. Horizon and locality same as D above. I. Orthambonites tennesseensis Cooper, NEW SPECIES....... cece eecseceesececteees (40) Brachial view of a complete specimen, X 2, paratype, 116881. Horizon and locality same as A above. J. Atelelasma cf. A. decorticatum Cooper, new SPCCicS......... cc ceeeeeeeeeeeeeees (41, 42) Interior and exterior views of a pedicle valve, <1, figured specimen, 117010. Lincolnshire formation, south side of road opposite Shiloh Church, northwest subquad., Pressmens Home (T.V.A. 171-NE) Quadrangle, Tenn. K. Albelelasma.varinbile, Cooper; mew: SpecieS x. aitsisy oaks ds di Sealed. see Mw. (43-47) Respectively brachial, anterior, posterior, side, and pedicle views of a com- plete specimen, 2, paratype, II70I5c. Horizon and locality same as B above. L. Atelelasma aff. A. variabile Cooper, new SPECIES........ ccc cece r cece sncccceccce (48-52) Respectively posterior, side, pedicle, anterior, and brachial views of a well-preserved, complete specimen, X 2, figured specimen, 117996. Horizon and locality same as B above. M. Atelelasma dorsoconvexum Cooper, NEW SPECIES... 1.2... eee eee cece cette ones (53) Impression of the brachial interior, X 2, paratype, 117011b; (54) impression of another brachial interior showing pallial marks, X 2, paratype, 117011f; (55) impression of the pedicle interior, 2, showing filling of spondylium, holotype, 117o1th; (56) small slab preserving a pedicle and brachial impression, X I, paratypes, 117011d, 117011e; (57) the pedicle impression, X 2, illustrated in the preceding figure. Athens formation (base), just east of road intersection 24 miles southeast of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. PLATE 83 DESMORTHIS, PLECTORTHIS A. Desmorthis nevadensis Ulrich and Cooper...........cccc cece cee cee c eee eeenees (1, 4) Pedicle exteriors, X 2, paratypes, 91342c, 91342a; (13) enlargement X 4 of fig. 1 to show hollow costellae; (2, 3) brachial exteriors, X 2, paratypes, 91344g, 91344c; (6) brachial interior, X 3, paratype, 91344e; (7) pedicle interior showing small pseudodeltidium, X 3, paratype, 91344d; (8) pedicle interior 359 385 313 525 519 447 1094 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page showing musculature and rudimentary pseudodeltidium, XX 3, holotype, 91344a; (9) brachial interior showing thick delthyrial platform and bladelike cardinal process, X 3, paratype, 913441; (10) brachial interior turned to the side to show brachiophore supports, fulcral plate, and socket, 4, paratype, 91344b; (11) another brachial interior showing cardinal process, < 2, paratype, 91344j; (12) brachial exterior, 2, paratype, 91342d; (14, 15) views of the interarea and interior of the pedicle valve showing pseudodeltidium, teeth, and crural fossette, X 4, paratype, 91344k. Upper Pogonip group (Desmorthis zone), west end of Lone Mountain, 18 miles northwest of Eureka, Roberts Mountains (1°) Quadrangle, Nev. (5) Pedicle exterior, X 2, figured specimen, 110806a. Joins formation, SW4 sec. 2, T. 1 S., R. 1 W., about 4 miles east of Hennepin, Murray County, Okla. B. Plectortius symmetrica Cooper new species’: i2..52 6 1983 IMRAS Rd. Seah 453 (16-20) Respectively brachial, posterior, pedicle, site’ and anterior views, X 2, of the holotype, 110824a; (21) brachial interior, < 2, paratype, 110828a. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. Cie Plectorthis. ponderosa Cooper, new: species) ¥!. TUTE PROPOR 451 (22-24, 28) Respectively pedicle, brachial, side, and anterior views of a small indi- vidual, 1, paratype, 110837b; (25-27) posterior, brachial, and pedicle views of a large specimen, X I, paratype, 110837a; (29) plasticine replica of the brach- ial interior, & 14, paratype, 110837d; (30) impression of the brachial interior, X 1, from which the preceding replica was prepared; (31) impression of the pedicle interior, 1, prepared by burning shell, paratype, 110837c; (32) replica of posterior part of pedicle interior, 2, prepared from preceding impression. Martinsburg formation (basal part with Brongniartella referable to Salona formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. PLATE 84 PLECTORTHIS A. Plectorthts .transversa, Cooper, new Species 24 2e. 284.) NEA SORES Re 454 (1-5) Respectively brachial, posterior, side, anterior, and pedicle views, 1, of the holotype, 98181. Arline formation, quarry on north side of Marion, Marion (T.V.A. 218-SE) Quadrangle, Va. B. Plectorthis' compacta’ Cooper; new Species ¥s Oi0).d.. Vehicles wldelth W342 Pe ae 448 (6-10) Respectively pedicle, brachial, side, posterior, and anterior views of a per- fect specimen, <1, holotype, 110821r; (11-13) respectively posterior, brachial, and pedicle views, < 1, of a larger paratype, 110821s; (14) pedicle interior, X 2, paratype, 110821-0; (15) brachial interior of a young specimen, X 2, paratype, 110821n; (16) brachial interior of a larger specimen than the preceding, X 2, paratype, 110821q; (17) posterior of preceding enlarged, X 3, to show details of cardinalia. Arline formation (near middle), north side of wagon road in glade, 4 mile southeast of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. C.. Plectonthissisps 26 . ear r as Woes SS oh) 5 SAO, SEER, NEI TNS: LS Rs 455 (18) Brachial interior, X 2, figured specimen, 110835a. Murfreesboro formation (top), from excavation of new armory building at PART it CHAZYAN AND RELATED BRACHIOPODS—COOPER junction of west fork of Stone River and U. S. Highway 70, 14 miles northwest of Murfreesboro, Tenn. Di, Plectorshis punctate Cooper) NEW SPCClES-2 oe «is slicies isicielslei eles tiaie cleleveke eles eee =\e (19-22) Respectively pedicle, side, anterior, and brachial views, < 2, of a paratype, 117024; (23) brachial view, X 1, of the same paratype. Tulip Creek formation (152 feet above the top of the basal sand), first creek east of U. S. Highway 77, SESNEINES sec. 25, T. 2 S., R. 1 E., Carter County, Okla. BS Picetoris’ ponderosa’ Cooper,’ New ‘Species ff 552 Teo octee ces wees acess es seccecas (24-28) Respectively side, anterior, pedicle, brachial, and posterior views of a per- fect specimen, X 1, holotype, 117022a; (29) brachial view, X 14, of the holotype; (30-32) respectively posterior, pedicle, and brachial views of a large individual, X I, paratype, 117022b. Martinsburg formation (basal part with Brongniartella referable to the Salona formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. Ei -Picctovinss panctata’ Cooper, BEW SPECIES... csc. tc a locs votes 65 cals tidticals vies ne oe (33) Brachial exterior, < 2, holotype, 110836a; (35) anterior of preceding, X 10, showing parallel rows of pits on costae. Tulip Creek formation, on West Spring Creek, NW3+ sec. 6, T. 2 S., R. 1 W., 24 miles east of Pooleville, Murray County, Okla. (34) Pedicle exterior, < 2, paratype, 117023b. Tulip Creek formation, NE. corner sec. 1, T. 2 S., R. 2 W., 25 miles east of Pooleville, Murray County, Okla. PLATE 85 MIMELLA Pa) MEET ERLIOR TC Te AVIIOHI) cy essen oiciate s ciate Giatars sheng ow elsierde ae bile = oie © ovain oKel dia dlela (1-5) Respectively pedicle, brachial, posterior, anterior, and side views of a com- plete specimen, 1, holotype (?), Carnegie Mus. 5512; (6-10) respectively posterior, side, brachial, anterior, and pedicle views of a specimen larger than the preceding, 1, hypotype, 110796; (11, 12) side and brachial views of a large specimen, X 1, hypotype, I110790a. Crown Point formation, south side of Valcour Island, Lake Champlain, Platts- burg (15’) Quadrangle, N. Y. Be i seppe tle sata e CSUSUES Pits 5 hens: tiem mn ain ions slagaieln spare! Senna Bin lease RedsialajailS Siagm TopRisio.aghonaloia (13, 14) Pedicle and brachial views of a specimen from which the shell has been peeled to show impressions of internal structures, X 1, hypotype, 110773c; (15) brachial view of a complete specimen, X I, hypotype, 110773b; (16-20) respec- tively posterior, pedicle, side, brachial, and anterior views of a somewhat exfo- liated specimen, * 1, hypotype, 110773a; (21) brachial view of a small individual with well-preserved ornamentation, < 1, hypotype, 110773d; (22-26) respectively posterior, side, anterior, pedicle, and brachial views, X 2, of the preceding. Lenoir formation, 13 miles southwest of Philadelphia, Philadelphia (T.V.A. 131-NW) Quadrangle, Tenn. C. Mimella valcourensis Cooper, new SPECi€S........cccccececsceccccccccccccecees (27-31) Respectively brachial, side, anterior, pedicle, and posterior views, X I, of the holotype, 110792; (32) brachial view, X 2, of the holotype, to show the ornamentation. Probably Valcour formation, Valcour Island, Lake Champlain, Plattsburg (15’) Quadrangle, N. Y. 1095 Page 452 451 452 488 479 486 1096 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL D. Mimella transversa Cooper, new SPeCi€S........c cece ec eeccccccceeetecsseetens (33-37) Respectively posterior, pedicle, side, brachial, and anterior views, X 1, of the holotype, 117052. Valcour formation, Valcour Island, Lake Champlain, Plattsburg (15’) Quad- rangle, N. Y. E. Mimelle borealts, (Billitigs,) 2s we «,seleeie bie’, ote aetna a abe (1-5) Respectively posterior, anterior, side, brachial, and pedicle views of a small, complete specimen, X I, paratype, 117037j; (6) brachial exterior of a large but somewhat crushed specimen, X I, paratype, 110669b; (7, 20) exterior and inte- rior of a large pedicle valve, 1, paratype, 110662a; (21) same as preceding, X 2, enlarged to show pallial markings and muscle scars; (8) pedicle exterior, < 2, to show ornamentation of a young specimen, paratype, 1170371; (9, 10) brachial interior tilted to side to show brachiophore supports and in normal posi- tion, X 2, paratype, 117037h; (11) brachial interior, 1, paratype, 117037{; (12, 13) same specimen as preceding, X 2, tilted to show brachiophore supports better in normal view; (14) pedicle interior, X I, paratype, 117037e; (15, 16) same as preceding, X 2, tilted to show dental plates and teeth and in normal view; (17) exterior, X 2, of preceding. Bromide formation (Mountain Lake member), road cut on Oklahoma High- way 99, SWA4NW3iSW45 sec. 12, T. 1 N., R. 6 E., Pontotoc County, Okla. (18, 19) Exterior and interior views of a pedicle valve doubtfully referred to this species, X I, figured specimen, 110663. Bromide formation (Mountain Lake member), along creek in SW} sec. 27, T.25S., R. 3 E., 14 miles west and 3 mile south of Nebo, Murray County, Okla. PLATE 87 MIMELLA A. Manella.ulrichs Cooper, New, SPECIES a. 1, paratype, 110702a; (33) enlargement, X 2, of the posterior part of the preceding showing cardinalia; (34) interior of an imperfect brachial valve, X 2, paratype, 110700c. Lincolnshire formation, 4 mile north of Eidson on old pasture road, Kyles Ford (T.V.A. 170-SE) Quadrangle, Tenn. D. Menella\wardeliena Cooper; new: .specieses|aq.icies distor &- 1, of the holotype, 117111a. Eureka group (yellow limestone on 25-foot sandstone at base), saddle just north of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. EB. (Ogoplecita:nevadensiss Cooper, Ne wsrSpecies .. j..2.44)s see anes: wie eo eee seen (38-42) Respectively brachial, side, anterior, posterior, and pedicle views of a com- plete specimen, X 1, holotype, 117115a; (43) posterior of preceding, X 2, show- ing interarea with nearly smooth pseudodeltidium; (44-48) respectively poste- rior, brachial, anterior, side, and pedicle views of another complete specimen, X 1, paratype, 117115b; (49) brachial view, X 2, of preceding. Eureka group (dark gray shale under Eureka quartzite), north-facing nose of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quad- rangle, Nev. 127 Page 543 552 554 548 550 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER PLATE 103 OXOPLECIA A. Oxoplects, flosaCooper,« new \SPeCles)./s sismietss <1, ois laic sauce biaelitinl ah on abl dinalblass bid ers) |q (1-5) Respectively side, brachial, posterior, pedicle, and anterior views of a small complete specimen, X I, paratype, 117099b; (12) enlargement, X 3, of the exte- rior surface of the anterior part of the pedicle valve of the preceding including most of the sulcus; (6-10) respectively posterior, brachial, anterior, pedicle, and side views of a large individual, < 1, holotype, 117099a; (11) posterior of the holotype, 2, showing the interarea and the narrow elevated ridge on the pseudospondylium. Bromide formation (Mountain Lake member), road cut on Oklahoma High- way 18, center NW3$ sec. 11, T. 1 S., R. 3 E., 1.8 miles south of Sulphur, Murray County, Okla. B. Oxoplecia. marmorata Cooper, new SPECIES... .....0.010 0% 0c es se tieenae cin san ness coe (13) Brachial exterior, X 2, paratype, 117110c; (14) pedicle exterior, < 2, holo- type, I117I110a; (15) another pedicle exterior, X 2, paratype, 117110b; (16) im- perfect pedicle valve, 2, paratype, I17110e. Red Knobs formation, 1 mile south of Louisville, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. C. Oxoplecea goulds Witich and Coaper ss oe cs ae sag cies esa Soncncisee tpn le bie tpopnn, Sle elem ape (17-19) Respectively pedicle, posterior, and brachial views of a complete specimen, X 1, hypotype, 118010; (20-24) respectively anterior, posterior, brachial, pedicle, and side views of a well-preserved individual, < 1, hypotype, 110876; (25) pedi- cle exterior of same, X 2, showing fila crossing the costellae; (27) posterior view of the preceding, 2, showing small apical foramen; (26) medial portion of a pedicle valve showing filose ornamentation superimposed on the costellae, x 4, paratype, 91898a; (28) the cardinal process seen from the anterior side, X 2, paratype, 91808b. Bromide formation (Pooleville member—O-xoplecia gouldi zone), Rock Cross- ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. (29) Apical view of an imperfect pedicle valve showing the foramen, the pseudo- deltidium, and the narrow, elevated ridge, X 4, paratype, 91890. Bromide formation (Pooleville member—O-roplecia gouldi zone), on branch of Hickory Creek, NW+ sec. 26, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. PLATE 104 OXOPLECIA A. Ooblecta recta Coopenp new Speciesiss. iii. snaie ctglalds Ld Oe Eas DG AOA (1-5) Respectively anterior, posterior, pedicle, brachial, and side views of a some- what weathered specimen, X 1, holotype, 110849a. Lincolnshire formation (Hogskin member), Sally Cleveland Farm, 3 mile southwest of Washburn, Dutch Valley (T.V.A. 154-SE) Quadrangle, Tenn. (6) Posterior, showing ridge on pseudodeltidium, 2, of a paratype, 117124. Lincolnshire formation (Hogskin member), 0.4 mile northeast of Red Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. B. Oxaplecia¢idsonensis Cooper) new Speciesei22 his oi Pave. o. dees ee (7-11) Respectively posterior, brachial, anterior, pedicle, and side views, X I, of the paratype, 110847Aa. Lincolnshire formation, shaly beds, along old pasture road, 4 mile north of Eidson, Kyles Ford (T.V.A. 170-SE) Quadrangle, Tenn. III! 547 545 556 541 IlI2 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. C. Oxoplecia pennsylvanica Cooper, New SPECIES... -...cc cc ececsecccsscccecceseees (12-16) Respectively brachial, anterior, pedicle, side, and posterior views of a com- plete specimen, 1, holotype, 117119a; (17, 18) pedicle and brachial views, X 2, of the holotype; (19) posterior part of the holotype, * 3, showing interarea and pseudodeltidium. Salona formation, old quarry 1 mile north-northeast of Bellefonte, Bellefonte (15’) Quadrangle, Pa. D. O-xoplecia planulata Cooper, new SPeCiGS.......-.escccccccccccccscncs sins sa teye (20-23) Respectively anterior, brachial, side, and pedicle views of a complete speci- men, X I, holotype, 117122; (24) posterior of preceding, X 2, showing interarea and pseudodeltidium. Carters formation (Oxoplecia bed), quarry 0.3 mile north of Gate City, Leeds (15’) Quadrangle, Ala. E, Oxoplecia pliicata:Cooper, new Species 8a ote ok SiGe caaisles meee ee vene oats eee ne (25) Brachial exterior, X 1, holotype, 117123; (26-31) respectively pedicle, poste- rior, anterior, side, tilted to show interarea and pseudodeltidium and brachial views, X 2, of the holotype. Red Knobs formation, 3 mile east of Friendsviile, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. F. Oxopletia ‘eidsonensis: Cooper, Mew SPeCieS). ds cicic asisidsiagicc’ chine sea oe lt ee liane’: (32-36) Respectively anterior, brachial, posterior, side, and pedicle views, X< 1, of the holotype, 110847b; (37, 38) posterior and brachial views, 2, of the holotype. Lincolnshire formation (shaly part), on old pasture road, 4 mile north of Eidson, Kyles Ford (T.V.A. 170-SE) Quadrangle, Tenn. G. Oxoplzciaiabnormées. Cooper, THEW, SPECIES. 6 ojo acs jetsws vce, a titedeolod irbibigte othee Galesateatie 2 (39) Brachial view, X 1, of the holotype, 110842; (40-44) respectively posterior, pedicle, anterior, brachial, and side views, X 2, of the holotype. Effna formation, 1 mile east of Tilson Mill, 16 miles northeast of Marion, Nebo (T.V.A. 223-NW) Quadrangle, Va. PLATE 105 OxXOPLECIA A. Oxoplecia multicostellata Cooper, Mew SPECIES... 0.60.0 ceed ne ee nete eomndeld dees (1-5) Respectively pedicle, anterior, brachial, posterior, and side views of a silicified specimen, X I, paratype, 111791a; (15) posterior of the pedicle valve showing interarea, teeth, and pseudodeltidium, 2, paratype, 111791f; (21, 22) interior and posterior of the brachial valve, X 3, showing brachial processes and cardinal process, paratype, I11791e; (20) pedicle interarea, 3, showing teeth, pseudo- deltidium, and small elevated ridge on the pseudodeltidium, paratype, 111791d. Note part of pseudodeltidium laid down anterior to the anterior end of the elevated ridge. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. (6-9) Respectively side, posterior, pedicle, and brachial views of a complete speci- men, X 1, holotype, 111790; (27) right umbonal side and lateral slope of brachial valve of holotype, enlarged X 4 to show filose ornament. Benbolt formation (lower), 0.2 mile south of the middle fork of Moccasin Creek, 14 miles south of Hansonville, Hansonville (T.V.A. 205-SW) Quad- rangle, Va. (10-13) Respectively anterior, pedicle, side, and brachial views of a large speci- men, X I, paratype, II171II4a. 127 Page 553 554 555 541 539 549 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Benbolt formation (lower), north side of U. S. Highway 10, 1} miles south- east of Hansonville Post Office, Brumley (T.V.A. 205-SE) Quadrangle, Va. (14) Pedicle valve, X 2, showing interarea and pseudodeltidium, paratype, 117112. Chatham Hill formation, Grayson Farm, 4 miles southwest of Bland, Bland County, Va. (16) Pedicle interior tilted to show dental plates, teeth, and edge of pseudodel- tidium, X 2, paratype, I17113e; (17, 18) respectively two views of the pedicle interior, one tilted to show the teeth and pseudodeltidium, the other to show the interarea, X 2, paratype, 117113b; (19) interarea of the pedicle valve, X 3, showing pseudodeltidium and narrow ridge characteristic of the Triplesiidae, paratype, 117113j; (23, 24) posterior and pedicle views of the brachial interior showing the cardinal process and brachial plates, X 2, paratype, I17113a; (25) posterior view of the cardinal process showing myophore slits in each prong, X 3, paratype, 117113c; (26) cardinal process seen from the inside and showing a brachial plate, X 3, paratype, 117113h. Chatham Hill formation, on Marion to Chatham Hill road, 6 miles north of Marion, Chatham Hill (T.V.A. 218-NE) Quadrangle, Va. PLATE 106 CAMERELLA, OXOPLECIA, PARASTROPHINA, PORAMBONITES A. Canmeroliatspeniat Alors dos 23 bd SRB HS, BODIE Ek SO TWP BES (1-5) Respectively posterior, anterior, side, brachial, and pedicle views of a com- plete specimen, X 1, figured specimen, 117140d. Benbolt formation (lower), 0.1 to 0.2 mile north of the road, 1.1 miles north- east of Lee Valley, Lee Valley (T.V.A. 171-NW) Quadrangle, Tenn. BD Oxapleci globularts Cooper, new) SPectes. ice hon. coititisidiein Dear dle Ris oc POS (6-10) Respectively posterior, anterior, brachial, side, and pedicle views of a com- plete specimen, 1, holotype, 117008b; (11) side view of another specimen showing rotund profile, < 1, paratype, 117098c. Martinsburg formation (part with Brongniartella and referable to the Salona formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. C. Oxablectaparvg Cooper; new Species: £47). 4 SKIT. MUO he hs PETS IO RI (12, 14, 15) Respectively pedicle, side, and brachial views of a complete specimen, x 1, paratype, 117117a; (13, 16) pedicle and side views of another specimen slightly compressed laterally, 1, paratype, 117117b. Benbolt formation (lower), 0.1 mile south of the middle fork of Moccasin Creek, 14 miles south of Hansonville, Hansonville (T.V.A. 205-SW) Quad- rangle, Va. TE: PORGIBED IEEE S TOSS ase sos. 5ia a 8 aches stn wie aiale Ota ein vale eaten oie a /clci niente senate Tae eoete a Reon (17-19) Respectively exterior, side, and anterior views of a large pedicle valve, X 5, figured specimen, 117178. Pogonip group (Orthidiella zone), about 1 mile above the mouth of White- rock Canyon, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. (20) Exterior of a pedicle valve, X< 6, figured specimen, 111371a; (24) interior, X 5, of the preceding specimen; (23) same as preceding, X 4, tilted to show dental plates; (21, 22) respectively two views of a brachial interior, tilted to show edges of brachiophore plates and in normal view, X 4, figured specimen, 111371b. Upper Pogonip group (Orthidiella or mottled zone 700 feet below the Eureka quartzite), near the base of the first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. 8 Page 586 544 552 610 EEDA SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. E. Oxoplecia multicostellata Cooper, new SPeCieS........ 02. c ce cee cee e eee e ee eeees (25, 26) Brachial and pedicle views of a complete specimen, X I, paratype, 123334. Edinburg formation (Cyrtonotella zone), Tumbling Run, 14 miles southwest of Strasburg, Strasburg (15’) Quadrangle, Va. By PGsRSEODIARG NSD. De... nic wc) eee ee lees skein ee male EEN sic es als) seins, «6 see oe ee (27, 28) Brachial and pedicle views of a complete specimen, X 1, figured speci- men, 117169; (20-32) respectively anterior, side, pedicle, and brachial views, X 2, of the preceding. Horizon and locality same as B above. G. Parastrophina: hemiplicate (Hall) iis. omlelancee bie RT RA. MENS (33-35) Respectively pedicle, side, and anterior views of a small individual, X 1, hypotype, 117168c; (36, 37) side and pedicle views, X 2, of the preceding; (38-42) respectively anterior, brachial, posterior, side, and pedicle views of a complete specimen, < I, hypotype, 117168b; (43, 44) side and pedicle views, X 2, of the same hypotype. Horizon and locality same as B above. H. Camerella bicostata Cooper, new Species 5.5 fick. odie id Mle a Sele ele’ ode aie al (45-49) Respectively brachial, anterior, side, pedicle, and posterior views of a complete specimen, X 1, holotype, 117130b; (50-54) respectively posterior, pedicle, anterior, side, and brachial views, X 2, of the holotype. Lincolnshire formation (Hogskin member), 0.4 mile east of Red Hill, 44 miles south-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. PLATE 107 PoRAMBONITES, SALONIA Ars Povarmsbonstes: 2 SP. . Decsverclicieid ioibia Wisin’ aes boyn MOPNMES, «AIOE SAT ela aretalade ier aje aieala see (1, 3) Interior and exterior views of a pedicle valve, 1, figured specimen, 117179; (2) pedicle interior of the same, X 14, tilted to show edge of dental plates. Table Head series (lower), Table Point, Newfoundland. B. Porambonites ? umbonatus Cooper, Mew SPECIES... ... cece cece cece eee nceceeeces (4-8) Respectively pedicle, posterior, brachial, anterior, and side views of a com- plete specimen, X 1, holotype, 111373a; (9) enlargement, X< 6, of the left poste- rior slope of the brachial valve of the holotype showing pitted ornament. Pogonip group (lower part of Rhysostrophia zone), Ikes Canyon about 1 mile above mouth, Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. (10, 11) Exterior and interior of a pedicle valve tentatively referred to this species, X 2, figured specimen, 102310. Pogonip group (not far below Eureka quartzite), Nopah Range, Inyo County, Calif. C. Porambonites Sp .uAnat ba dteeralantermation Dube «abla as septec eelaeeonadetves Cie (12) Imperfect brachial valve, 1, figured specimen, Columbia Univ. 26404 (1093) ; (13) same as the preceding, X 2; (14) enlargement, X 4, of the surface on the right posterior side of the same specimen as preceding, showing pitted ornament. Salona formation, roadside and small quarry on Pennsylvania Highway 44, 150 yards east of road to Oriole, east of Antes Gap, Williamsport (15’) Quad- rangle, Pa. D. Salonia magnaplicata Cooper and Whitcomb..............ccccccccerececnseces (15-17) Respectively posterior, pedicle, and brachial views of a large specimen, >< 2, holotype, 85422a; (18, 20) respectively pedicle and brachial views of a nearly full grown specimen, X 4, paratype, 85422b; (19) side view of a specimen 127 Page 549 608 606 564 610 609 611 615 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER smaller than the preceding, 4, paratype, 85422c; (21) brachial interior, ca. X 6, showing cardinalia, paratype, 85422p. Salona formation (12 feet above the base), along the railroad beside Fishing Creek, Salona, Clinton County, Lock Haven (15’) Quadrangle, Pa. PLATE 108 CAMERELLA, GLYPTORTHIS, IDIOSPIRA, OXOPLECIA, PERIMECOCOELIA, PoORAMBONITES, TAPHRORTHIS A. Glyptarthisrgly pte Cooper; ‘new species ¥a'gs 3n/sed Wein. NAN. oC Taek (1) Pedicle exterior, X 3, paratype, 116935c; (2, 3) respectively exterior and inte- terior of a pedicle valve, 4, showing muscle area and ornamentation, para- type, 116935a; (4, 5) exterior and interior of the brachial valve, showing cardinalia, X 4, paratype, 116935b. Pratt Ferry formation (lower third), 0.2 mile southeast of Pratt Ferry, 18 miles southwest of Montevallo, Blocton (15’) Quadrangle, Ala. Be. Daphroriies pecultarss Cooper, New SPECIES. o-ak7s sic « s.o:0is.o's coals 2 o ia elelelereisieialeiaiy ore (6-10) Respectively pedicle, posterior, anterior, side, and brachial views of a young but complete specimen, X 4, paratype, 116893b; (11) brachial view of a complete specimen, X 4, paratype, 116893a; (12, 13) respectively pedicle and brachial interiors, X 4, of same paratype; (14) pedicle exterior, x 4, of the same paratype. Horizon and locality same as preceding. C. Gipptorthis equiconvexa Cooper, NEW SPECIES 0.5 so ce ose'e eos « oljmartie mane deseiaih seco eyei nfs (15, 16) Respectively 2 and 1 views of the brachial interior, showing the cardinalia, paratype, 116933b; (17, 18) respectively X 1 and XX 2 views of the pedicle interior showing the narrow diductor tracks and the broad adductor track, paratype, 116033a. Botetourt formation, in the field on the south side of the road 0.2 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. D: Taphrorius peculiaris Cooper, MEW SPECIES « «i sicc.s occpoied as cacies eeameleecie, esiede (19, 20) Brachial and pedicle views of a somewhat crushed specimen, X I, paratype, 116892. Botetourt formation, north side of Virginia Highway 114, 2.3 miles west of the Montgomery-Roanoke County line, 12 miles northeast of Blacksburg, Va. E. Perwmecocoelia semtcostata Cooper, NEW SPECIES... ois os occr es since evens sccm weiss (21) Spondylium of the pedicle valve showing an anterior constriction common to old-age specimens, < 4, paratype, 117159d; (22) another fragmentary pedicle valve showing the spondylium, in this case without constriction, 3, paratype, 1171590c; (23, 24) brachial interior in normal view and tilted to show the elongated cruralium from which the genus derives its name, X 2, holotype, 1171590b; (25) incomplete brachial valve seen from the side to show the elongated cruralium and fulcral plates, X 3, paratype, 117159a. Horizon and locality same as A above. I, Javaspiri vangerh UBUnags ties cients eaee de s semesiyres ost caceaghent pocnclen © (26-30) Respectively brachial, pedicle, posterior, side, and anterior views of a com- plete specimen, X 1, hypotype, 92374a; (31) brachial interior showing cardinalia, <2, hypotype, 85330a; (32) specimen with brachial valve removed to show peculiar brachidium, X< 2, hypotype, 92374c. Rockland formation, Pauquette Rapids, Ottawa River, Ontario, Canada. G. Camereila wmbonata Cooper, New SPECIES. ........ cece cece cnet esececeesceseces (33, 34) Pedicle and brachial views of the holotype, X 1, 117147; (35-39) respec- tively anterior, side, pedicle, posterior, and brachial views of the holotype, X 2. IIIS Page 360 328 308 328 594 691 1116 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Yellow limestone on 25-foot sandstone at base of Eureka group, 34 miles N. 17° E. of Martin Ranch, Roberts Mountains (1°) Quadrangle, Nev. H. Porambonitest2 spars eee BRR Se EERE) Rete (40, 41) Exterior and interior of the pedicle valve, 1, showing spondylium and short septum, figured specimen, 117177; (42) exterior of the same specimen, 2, showing pitted ornamentation. Pogonip group, hills on the west side of Racetrack Valley, opposite Quartz Spring, Uhebe Peak (15’) Quadrangle, Inyo County, Calif. I. Oxoplecia magnaplicata Cooper, new SPECi€S........cceeceseccceccecesececconces (43-47) Respectively brachial, anterior, posterior, pedicle, and side views of an adult complete specimen, I, holotype, 117109; (48) brachial view of the pre- ceding specimen, < 2, showing interarea and small ridge on pseudodeltidium. Shippensburg formation (Pinesburg member—Echinosphaerites zone), cut at Wilson on U. S. Highway 40 on the west side of Conococheague Creek, 7 miles west of Hagerstown, Williamsport (15') Quadrangle, Md. F PLATE 109 CAMERELLA, IDIOSTROPHIA, RHYSOSTROPHIA A. Idsostrophia perfecia Ulrich ‘and’ Cooper yt.) .). cs hee te leek alae ace chs cae cteeton (1-3) Respectively brachial, side, and pedicle views of a small specimen referred to this species, X 2, hypotype, 117173. Table Head series (middle to upper half), 23 to 3 miles south of Belle Burns, Newfoundland. (4-8) Respectively posterior, anterior, side, pedicle, and brachial views of a fine, large specimen, X 14, holotype, 92885a. Boulder in Mystic conglomerate, Range 6, Lot 20, Stanbridge Township, near Mystic, Quebec, Canada. B. Idestrepiva ctostota Ulrich and "Cooper? cess scars sca cs tat ne ne sacs aan ence (9-13) Respectively pedicle, anterior, side, posterior, and brachial views of a com- plete specimen, X 14, holotype, 92886. Horizon and locality same as preceding (figs. 4-8). C.. ddigstrophia’ plicata Cooper, Mew: Species 3. oa sc ausc qome: 6 ces cee ae cuore e enim ee (14-17) Respectively brachial, anterior, pedicle, and side views, 2, of the holotype, 117172. Table Head series, Table Point, Newfoundland. D:. Idtostvophia pauctcostata Cooper, NEW SPECIES... soc 0 ones o fou Znminacde Sueperwisie et ssshotne (21-25) Respectively brachial, pedicle, posterior, anterior, and side views, X I, of the holotype, 117170; (26-29) respectively posterior, anterior, pedicle, and side views of the holotype, X 2, showing the ornamentation. Pogonip group (mottled zone 700 feet below the Eureka quartzite), base of the first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. F. Rhysostropia: transversa Ulrich and Cooper... sistesrort.aa-). A. Veo TU ek LOIRE OS wi (6, 7) Respectively X 1 and X 2 enlargements of the pedicle valve of a narrow specimen, paratype, G.S.C. 1038a. Mingan formation, Mingan Islands, St. Lawrence River, Canada. C. Camereila volboriht’ Billings 2 ose PEO ree Be (8-11) Respectively anterior, pedicle, brachial, and side views of a complete speci- men, X I, hypotype, G.S.C. (not numbered). Rockland formation, Paquette Rapids, Ottawa River, Quebec, Canada. LD © GINCREI EL VIRIONS ID ILIN GS Sere ere ce tercre elec ciaravent e narere ne corte omitee eteregisierere sitcaeimenat = (12-15) Respectively pedicle, brachial, and side views of a wide individual, X 1, lectotype, G.S.C. 1038; (15) pedicle view of lectotype, X 2. Horizon and locality same as B above. BrGamerclianCUrlans Bilinese ce cs cc coe Cee re ee Oe nee iaiere omens ae tats Settee (16-18) Respectively pedicle, anterior, and brachial views of a complete specimen, xX 1, hypotype, 111163; (19-21) pedicle, brachial, and side views, X 2, of the preceding. Crown Point formation, Valcour Island, Lake Champlain, Plattsburg (15’) Quadrangle, N. Y. . Capereia triangulata Gooper, NCW "SPECIES <. ngs cca. cs si cnet he Cate cae ne alsne ticks (22-25, 29) Respectively pedicle, anterior, side, brachial, and posterior views of a complete specimen, X 1, holotype, 111162; (26-28, 30) respectively anterior, brachial, side, and pedicle views, X 2, of the preceding. Lenoir formation, Knoxville, Tenn. (31-35) Respectively anterior, side, posterior, pedicle, and brachial views of a complete specimen, 2, paratype, II7145. Lenoir formation (Billingsaria zone), 3 mile northeast of Friendsville, Louis- ville (T.V.A. 138-SE) Quadrangle, Tenn. G. Gamerella ventricosa Gooper, .ne@wW SPECIES a. « dss spe + eeinln n'a, nate © oltihiaste.cjelce% dene ccm (36-40) Respectively brachial, side, pedicle, posterior, and anterior views of a large, rotund individual, < 1, holotype, 111170a; (41-45) respectively brachial, posterior, side, anterior, and pedicle views, X 2, of the preceding; (46-49) re- spectively side, anterior, posterior, and brachial views of an individual narrower than the preceding, I, paratype, 111170d. Crown Point formation (loose but derived from zone 3, division B of Brainerd and Seeley), Chazy, Plattsburg (15’) Quadrangle, N. Y. 570 583 585 583 583 581 584 1118 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. H. Liricamera nevadensis Cooper, NEW SPECIES.......ccceeccccccccecccccscsesccces (50-54) Respectively brachial, posterior, side, pedicle, and anterior views of a small but complete specimen, X 2, paratype, 117175c; (55) pedicle exterior, X I, paratype, 117175h; (56) pedicle view of an imperfect specimen, X 2, paratype, 117175b; (57) brachial interior showing small characteristic cruralium, X 2, paratype, 117175d. Pogonip group (Orthidiella zone—mottled zone 700 feet below the Eureka quartzite), base of first ridge east of Frenchman Flat, Las Vegas (1°) Quad- rangle, Nev. PLATE III CAMERELLA, PERIMECOCOELIA, STENOCAMARA Acs Camerellabicostata ‘Cooper’ new. Species::,.,..cteaeiis ae 5s todas an sls taneivibl she Rielaboveiere (1-5) Respectively brachial, posterior, side, anterior, and pedicle views of a young specimen, 1, paratype, 111106; (11-15) respectively pedicle, anterior, side, posterior, and brachial views of an obese and slightly crushed specimen, X I, paratype, 117130a. Lincolnshire formation (Hogskin member—upper ), 0.4 mile northeast of Red Hill, 44 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quad- rangle, Tenn. (6-10) Respectively brachial, posterior, anterior, pedicle, and side views of an- other complete specimen, X I, paratype, III110a. Lincolnshire formation (Hogskin member), Sally Cleveland Farm, 3 mile southwest of Washburn, Dutch Valley (T.V.A. 154-SE) Quadrangle, Tenn. B. Camercila-quadriplicatan(W Ward) ovicieiiig nin sale elo ssid rng fo lors elniage Sik Sabie siepaaele o> (16, 17) Pedicle and anterior views of a small specimen, < 1, hypotype, 111155b. Horizon and locality same as preceding. (18-20) Respectively brachial, pedicle, and side views of a slightly broken speci- men, <1, hypotype, 118011a; (21) brachial view, x 2, of the preceding. The hole in the center of the specimen was broken in taking the 2 enlargement. Horizon and locality same as A (1-5) above. (22-24) Respectively pedicle, anterior, and brachial views of a weathered speci- men, X 1, hypotype, 111157a; (26) enlargement of the surface, X 4, showing fine papillae, hypotype, I11157c. Lincolnshire formation (Hogskin member), 2.1 miles southwest of Mount Eager Church, Hogskin Valley, Powder Springs (T.V.A. 154-SW) Quadrangle, Tenn. (25) Brachial exterior, X 1, hypotype, I11156a. Lincolnshire formation near Marble Bluff, 8 miles west-northwest of Loudon, Loudon (30’) Quadrangle, Tenn. i C. Perimecocoelia elliptica Cooper, new SPeCieS............ceeeeencesercrcnsercres (27-30) Respectively brachial, anterior, pedicle, and posterior views, X 1, of the holotype, 111164; (31-35) respectively posterior, brachial, side, pedicle, and anterior views, X 2, of the holotype. Arline formation, north side of old wagon road in cedar glade, 4 mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. D. Camerella tumida Cooper, New SPECIES... 0. cok ee ck ween te nnenecrtosercoses (36-40) Respectively pedicle, anterior, posterior, brachial, and side views of a com- plete specimen, X 2, holotype, 117146. Table Head series (middle to lower), Lower Head, 4 miles north of Cow Head, Newfoundland. E. Stenocamara perplexa Cooper, new SpecieS... 12... ccs cece ccc cet e cece cccesscees (41-45) Respectively side, anterior, pedicle, posterior, and brachial views of a complete specimen, I, holotype, 111321. 127 Page 592 564 579 594 582 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER IlIg Page Mosheim formation, 4 mile southeast of railroad station, Morristown, Morris- town (T.V.A. 163-NE) Quadrangle, Tenn. F.» Camerella anteroplicata Cooper, new SPeCICS. «6.02. cccee cecccccececcvevesesosees 562 (46-49) Respectively pedicle, anterior, brachial, and side views, X 1, of the holo- type, 117129; (50-54) respectively anterior, posterior, side, brachial, and pedicle views, X 2, of the holotype. Bromide formation (Pooleville member—O-xvoplecia gouldi zone), Rock Cross- ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. G. Camerella cf. C. anteroplicata Cooper, new SPeCieS.......... 0. eee ceecccesccseees 562 (55-58) Respectively brachial, anterior, pedicle, and posterior views of a small specimen, X I, figured specimen, 111341; (59-63) respectively anterior, pedicle, side, brachial, and posterior views, X 2, of the preceding. Horizon and locality same as preceding. PLATE II2 CAMERELLA, RHYSOSTROPHIA Ay. RhysostropiGa spi 2s 28 Goes ERE RRS. LSU ER AE, ite TERY FORA, GDR RY 560 (1, 2) Brachial and pedicle exteriors, X 2, figured specimens, 117162a, 117162b. Table Head series (upper), Table Point, Newfoundland. B. Rhysostrophia occidentalis Ulrich and Cooper......... ccc cece eee ee eee eset eens 559 (3-7) Respectively anterior, posterior, side, brachial, and pedicle views of an ex- ceptionally fine specimen, X I, hyptotype, 117163. Upper Pogonip group (lower part of Rhysostrophia zone), about 1 mile above the mouth of Ikes Canyon, Toquima Range, Roberts Mountains (1°) Quad- rangle, Nev. C. Canmevella GellaNPeRtOa ys AGG 8 ING BEM PPO Th OT, Wha aes Leta 563 (8, 9) Pedicle exterior and interior, X 1, hypotype, 111101m; (10, 11) brachial exterior and interior, X 1, hypotype, 111101k; (14) interior view, 1, of the preceding tipped to show cruralium and median septum; (15) same view, X 2, of same specimen. Plattin group (Macy formation), Heck place, 14 miles south-southeast of River Aux Vasses, Weingarten (15’) Quadrangle, Mo. (12, 13) Pedicle interior, X 1 and X 2, showing spondylium in detail, hypotype, I11102a. Plattin group (Macy formation), on old road 1 mile northwest of the Chicago Summer School Camp, NW4SW+3 sec. 32, T. 37 N., R. 9 E., Weingarten (15’) Quadrangle, Mo. D. Camerella indefinita Cooper, New SPCCIES...... ccc cee eed ccc ce dt ececcessucccens 570 (16-20) Respectively pedicle, anterior, posterior, brachial, and side views, X 1, of the holotype, I, 111127; (21-22) brachial and pedicle views, XX 2, of the holotype. Elway formation, 4 mile northwest of Eidson, Kyles Ford (T.V.A. 170-SE) Quadrangle, Tenn. E. Camerella multiplicata Cooper, new SPeCi€S...... cece cece ee cee eee e cece eceees 572 (23-27) Respectively anterior, posterior, brachial, pedicle, and side views, X 1, of the holotype, 111153; (28, 29) pedicle and brachial views, < 2, of the holotype, Horizon and locality same as preceding. FP. -Camierella Bp SP F803 CUT Re BIL URIS ONT 8 586 (30, 32, 33) Respectively anterior, side, and pedicle views of a somewhat distorted specimen, X 2, figured specimen, 117150a; (31) pedicle view of an immature individual before developing anterior costation, X 2, figured specimen, 117150b. Blackford formation (basal conglomerate zone), just north of the junction II20 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. of Virginia Highways 100 and 42 on Virginia 100, Staffordsville, Giles County, Va. G Camerella costellaia.Goopery new: speciessVSor sa. NOt. VO BE (34-36) Exterior, anterior, and side views of the pedicle interior impression, X 1, paratype, II1III3a; (37, 38) posterior and pedicle views of the same specimen, X 2, showing slots produced by spondylium and median septum; (40) impression of the brachial interior, X 1, paratype, 111113b; (39, 41) posterior and normal views of the same brachial impression, X 2, showing slots formed by cruralium and median septum. Elway formation, Eggleston, Giles County, Va. PLATE 113 CAMERELLA, IDIOSTROPHIA A. Idtgstrabhia 2. sp. We iiche. PROG. LA ESe. BER as prinion: wads (1-4) Respectively side, pedicle, brachial, and anterior views of a complete speci- men, X 3, figured specimen, 66308a; (5) brachial view of a specimen smaller than the preceding, X 3, figured specimen, 66308b. Boulder in the Mystic conglomerate, Range 6, Lot 20, Stanbridge Township, Quebec, Canada. B. Camerella unicostata Cooper, new species...........000eeeeeeee torattevnnpekcheaoye sitersns (6-9) Respectively brachial, anterior, side, and pedicle views, * 3, of the holotype, IIIIOI. Ward Cove formation, 2 miles south of Hall Crossroad on the Hickey place, Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. C. .Camerella’ minutia: Cooper, new Species; s,.210\a). .ah Sinks 2s! So Saeco ees (10-14) Respectively posterior, brachial, pedicle, side, and anterior views, < 3, of the holotype, I1113Ia. Botetourt formation, near Cedar Grove Church and School, 14 miles southeast of Harrisonburg, Harrisonburg (15') Quadrangle, Va. (15-19) Respectively pedicle, side, brachial, anterior, and posterior views of a com- plete specimen, X 3, paratype, 111128e. Effna formation, lower part of McNutt Quarry, 12 miles southwest of Bland, Burkes Garden (15’) Quadrangle, Va. D. Camerella: gregeri Cooper; new spetiessioi ies 3... du). -edes hee eln.ee pee (20-24) Respectively posterior, anterior, side, pedicle, and brachial views of a fine complete specimen with 4 costae in the sulcus, 1, paratype, 111125; (25-29) respectively brachial, posterior, pedicle, anterior, and side views of a large speci- men with 6 costae in the sulcus, 1, holotype, 111126. Plattin group (Macy formation), near Glencoe, St. Louis County, Mo. (30) Pedicle interior, showing spondylium, x 1, paratype, 117136a; (31) brachial interior showing cruralium, X 2, paratype, 117136c. Plattin group (Macy formation), Rockwoods Reservation, 1 mile west of Grover, 20 miles west of St. Louis on Manchester Road, St. Louis County, Mo. EE.» Camerella ellipijea ‘Coopers new, species «.jw:dsicdxionlnns teat eens e eas nadine (32-34) Brachial, pedicle, and side views of a young specimen, X 1, paratype, 98220a ; (35-39) respectively brachial, pedicle, anterior, side, and posterior views, X I, of the holotype, 111119d; (40, 41) respectively X 1 and X 2 enlargements of the pedicle interior showing the spondylium, paratype, 111119¢c; (42, 43) respectively 2 and X 3 views of the posterior of a specimen seen from the anterior and showing the spondylium, cruralium, and long, thin brachial process, paratype, I11119b. Lincolnshire formation, Marcem Quarry, north side of U. S. Highway 58, 2 miles west of Gate City, Gate City (T.V.A. 188-NE) Quadrangle, Va. 127 Page 565 590 583 571 569 567 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER BY Camerella cl Ciellipiica, Coapen, New.SpeCies -\iai, ages Mee Nagar. Destats HAN (44-48) Respectively pedicle, anterior, side, posterior, and brachial views of a com- plete specimen, X 1, figured specimen, 117133a. Lincolnshire formation, on the north side of the road 2 miles southwest of Hall Crossroad, Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. PLATE II4 CAMERELLA, PERIMECOCOELIA A. Camercila pricata (Schochert ‘and ‘Cooper ye ore Oe cr are ace he wae dt oda cte wuts (1-5) Respectively side, pedicle, anterior, posterior, and brachial views of a com- plete specimen, X 1, hypotype, 111147c; (21, 22) brachial interior, 1, and the same specimen tilted to show cruralium and septum, X 2, hypotype, 111147b; (23, 24) enlargements <1 and X 2 of the pedicle interior showing the spon- dylium and septum, hypotype, 1111472. Ridley formation (top of lower third), east side of Marshall Knobs, 5 miles south of Murfreesboro, Rutherford County, Tenn. (6-10) Respectively pedicle, anterior, side, posterior, and brachial views of a com- plete specimen, X 2, paratype, 1111309d; (11-15) respectively posterior, pedicle, side, anterior, and brachial views of a wide specimen with numerous costae, x I, paratype, 111130g; (16-20) respectively anterior, pedicle, side, posterior, and brachial views, X 2, of the preceding. Wardell formation (Hesperorthis zone), Evans Ferry section, road cut on U. S. Highway 25E, 4 mile north of Indian Creek, Howard Quarter (T.V.A. 162-NW) Quadrangle, Tenn. B. Camercila pulchra, Cooper, Mew. SPeCles so. 1. Rockland formation (Napanee member), just west of the Mill Creek bridge in the city of Lowville, Lowville (15’) Quadrangle, N. Y. Brevicamera’ camerata Cooper, (new species. aiiia.&..(snak seaees). eersigaeeith eneee. (15) Exterior of a nearly perfect brachial valve, X 2, holotype, 117154c; (16) interior of the same specimen, X 4, showing the cardinalia in detail. Horizon and locality same as A above. Parallelelasma pentagonum Cooper, new Species..........0eceeccecceecccceceees (17, 18) Side and posterior views of the apical end of a specimen with both valves in contact, X 3, paratype, 117156c; (19, 22, 23) side and interior views of a frag- mentary pedicle valve showing spondylium, teeth, and sockets outside the teeth, x8, X4, X 8, paratype, 117156g; (20) exterior of a nearly complete pedicle valve, 2, paratype, 117156e; (21) interior of another pedicle valve, xX 2, showing form of spondylium, paratype, 117156j; (24, 31) respectively < 4 and X 8 views of another pedicle interior showing the spondylium in normal and side views, and the side view showing the socket on the inside of the tooth, paratype, 117156h; (25) fragment of anterior part of a specimen with both valves in contact and showing the strainer “webs” between the ends of the costae, X 3, paratype, 117156f; (26) fragment of a brachial interior showing short, blunt brachiophore and supporting plate, X 8, paratype, 117156d; (27, 28) respectively 4 and X 8 views of the brachial interior showing brachiophores, accessory teeth on brachiophores, and sockets, holotype, 117156-1; (29) same in side view, < 8; (30) interior of another brachial valve showing sockets, brachio- phores and their supporting plates, X 8, paratype, 117156a. Horizon and locality same as A above. PLATE 120 DiIDYMELASMA, NEOSTROPHIA A. Neostrophia.? gregaria Cooper, Tew. SpeCieS: <..5....60% 00560065 cs es can cw ce natieneie’ (1, 2) Brachial and pedicle views of a complete specimen showing the median septum, 2, paratype, I11310a; (3-6) respectively anterior, side, posterior, and brachial views of a complete specimen, X 2, holotype, 111310b. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. B. . Negsivephia subcostata Wixich and’ Cooper! 2.20675 2 eae (7, 10, 12) Anterior, pedicle, and side views of a complete specimen, X 2, paratype, 66309b; (8, 9) side and posterior views of a young specimen, X 2, paratype, 66309e; (11, 13, 15) respectively anterior, posterior, and brachial views, X 2, of the holotype, 66309a; (14) brachial view of an adult specimen, showing ante- rior costation, X 2, paratype, 66300f; (16) posterior of a polished specimen 127 Page 603 678 561 614 590 591 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER showing apical structures, <2, paratype, 663009d. The pedicle valve is the lower one in the figure. ‘ Boulder in Mystic conglomerate, Range 6, Lot 20, Stanbridge Township, near Mystic, Quebec, Canada. CoONPOGEOPNRE CISPR TES care ons sos ck tate dete eda ee Uta ciesie/ccaleuiselee else's de amen ae (17) Brachial valve, X 3, figured specimen, 117176b; (18) group of specimens, X 3, figured specimen, 117176a. Ward Cove ? formation (basal part of 80-foot bed), Jeff Gillespie’s place, Thompson Valley, 14 miles southwest of Tazewell, Tazewell County, Pounding Mill (15’) Quadrangle, Va. D. Didymelasma longicrurum Cooper, New SPECIES... 2.0.2.0 eee cecee cect eeenevececs (19-23) Respectively anterior, posterior, brachial, side, and pedicle views of a com- plete specimen, 3, holotype, 117158c; (24-26) respectively pedicle, side, and brachial views of a complete specimen younger than the preceding, 3, paratype, 117158d; (27) small slab showing group of valves, X I, paratype, 117158a; (28) part of the preceding, X 3; (29) part of another slab surface, 3, showing brachial and pedicle interiors, paratype, 117158b. Note long parallel plates in the brachial interiors. Lebanon formation, road cut on U. S. Highway 41, # mile southeast of Knox Branch, 9 miles southeast of Murfreesboro, Rutherford County, Tenn. E. Didymelasma abruptum Cooper, new SPECIES. ... 2... cece cee ween ess ecaesieeneesies (30) Exterior of the pedicle valve, < 2, paratype, Columbia Univ. 26403(928)a; (31) brachial exterior, X 2, holotype, Columbia Univ. 26403(928)b; (32) group of immature valves not showing marked sulcus or fold, X 2, paratype, Columbia Univ. 26403(928)c; (33) several valves on a small slab, XX 3, paratype, Columbia Univ. 26403 (928) c. Rockland formation, northeast of Gretna, Ontario, Canada. PLATE I21 CAMERELLA, DALMANELLA, HESPERONOMIELLA, MACROCOELIA, ONYCHOPLECIA, PARALLELELASMA, TRIPLESIA A. Parallelelasma pentagonum Cooper, new SpecieS.......c.ccesecceecccccccccccees (1) Anterior view of a brachial valve showing the strainer “webs” between the anterior costae, X 4, paratype, 111329. Same specimen as pl. 115, H, fig. 49. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. B. Dalmanella crassicostellata Cooper, new SPECiCS...... 202 cece cecccceccccsntnnnce (2) Brachial view, X 1, of the holotype, 117361d; (3-7) respectively posterior, anterior, pedicle, side, and brachial views, X 2, of the holotype; (8) interior of the brachial valve, 3, showing parallel plates and cardinal process, para- type, 11736Ie. Hermitage formation (base), on Tennessee Highway 53, 0.7 mile south of Woodbury, Woodbury (15’) Quadrangle, Tenn. CH, OF PER op leriaisps Ps. foo tedster te ee eae t os ne Heh cok Cote AD ada ae eee 4 (9, 10) Exterior and side views of an adult brachial valve showing distant costae, X 2, figured specimen, 117096b; (11) exterior of a young pedicle valve, X 3, figured specimen, 117096a; (12) plasticine replica of the exterior of an adult pedicle valve, < 2, figured specimen, 1170096c. Sevier formation (top sandstone No. 5), 0.28 mile northwest of Fourmile Church, Tallassee (T.V.A. 139-SE) Quadrangle, Tenn. DT rablestag See Wipe ain lots ae BO ee ae Sela atest staan bel s\> ask seine Nouasinbioew.ot:He os (13) Exterior of an imperfect pedicle valve, X 2, figured specimen, 1170097. 1127 Page 591 617 616 614 949 536 1128 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Whitesburg formation, 14 miles west of Bulls Gap, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. EF. (Camere Spo. sete ois oes, Dek ae meee A, RIOT RC eR Ue IT, BRUINS, 0 (14) Exterior of brachial valve showing depression in fold, 2, figured specimen, 123294. Horizon and locality same as preceding. F, Onychoplecia matutina Cooper, new SPCCi€S......0 ccs scccciecsusveccosscsccseces (15) Exterior of a small pedicle valve, X 3, paratype, 117941a; (16) exterior of a brachial valve showing radial lines of exfoliated shell, X 3, paratype, 117941b. Jasper formation, just northwest of Pindall, Yellville (30) Quadrangle, Ark. (17) Exterior of another pedicle valve, larger than that of fig. 15, X 3, holotype, 117940a. Everton formation (base), near school, northwest of Pindall, Yellville (30’) Quadrangle, Ark. G. Macrocoeha' plebeta Cooper, new species. 10))60). PL Ps PO be (18) Exterior of a complete specimen seen from the brachial side, X 2, holotype, 117793a; (19) imperfect brachial valve showing cardinalia, x 2, paratype, 117793b. Lenoir formation (45 feet above the base), 0.1 mile southwest of triangulation point 37SH, Wildwood (T.V.A. 147-SE) Quadrangle, Tenn. Hi! Hesberonomeetia munor: (Walcott) ss ii 8 P2228. Pee Te eee ee a ee (20) Small slab, <1, showing pedicle and brachial interiors, hypotype, 117939; (21) view of the same slab enlarged, X 3, to show the pallial markings, teeth, and muscle scars of the interior of the two pedicle valves; (22) the interior of the brachial valve, 2, showing the stout cardinalia. Upper Pogonip = Wahwah formation, T. 22 S., R. 14 W., Confusion Range, Millard County, Utah. PLATE 122 LirRICAMERA, PLECTOCAMARA A. Liricamera nevadensis Cooper; Mew SPeCieS.. 0... veal sce c cece ccs eeeeeawes cons (1-4) Respectively posterior, side, anterior, and brachial views of a complete speci- men, X I, holotype, 117174g; (5) posterior part of the pedicle interior showing the spondylium, 2, paratype, 117174h; (6) another pedicle interior seen from the side, X 2, paratype, 117174e; (7) pedicle interior of a nearly perfect valve, X 2, paratype, 117174f; (8) brachial interior, X 2, paratype, 117174d. Pogonip group (Orthidiella zone, mottled zone 700 feet below the Eureka quartzite), base of the first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. iB. eLlestocamura ‘costata Cooper. news Speciese. «os verteit csc cn etic cine hoteles (9-13) Respectively anterior, side, pedicle, brachial, and posterior views of a com- plete specimen, * 3, holotype, 111360a. Lincolnshire formation (Hogskin member), Sally Cleveland Farm, 3 mile southwest of Washburn, Dutch Valley (T.V.A. 154-SE) Quadrangle, Tenn. (14-18) Respectively brachial, posterior, pedicle, anterior, and side views of a young specimen, X 3, paratype, 111368a; (19) pedicle interior showing spon- dylium, X 3, paratype, 111368b. Lincolnshire formation (Hogskin member), on Washburn road, 43 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. (20, 21) Brachial interior in normal view and tilted to show cruralium and absence of median septum, X 3, paratype, 111356. Lincolnshire formation (Hogskin member), ca. $ mile north of Thorn Hill, on U. S. Highway 25F, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. 534 809 337 592 598 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Ge Plectocomara‘asepiata: Cooper, ‘new Species) 02 athe Yiets WIDTOOLL Maas ease os (22-26) Respectively anterior, posterior, side, brachial, and pedicle views of a fine, complete specimen, 3, holotype, 111361a. Benbolt formation (15 feet above the base), 14 miles west of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. De Plectocamara asepiata. Cooper, new Species AN i). FIG. HO iwie.d SWS SANS (27-29) Respectively pedicle, side, and brachial views of a young specimen, X 3, paratype, 117181. Ward Cove formation, 2 miles southwest of Hall Crossroad, Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. E. Plectocamara rotunda Cooper, new Species. 25.1. (Fhe sale seine Se ce wb lels wei de sie (30-34) Respectively brachial, anterior, side, posterior, and pedicle views of a complete specimen, < 3, paratype, 117186e. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. Fy Plectocamara ‘transversa: Cooper, New SPeCi€S. 1.6. .cc eeldles | ots AO) aS (35) Pedicle exterior, X 1, holotype, 117188; (36, 37) pedicle exterior and inte- rior, 2, showing spondylium and extremely abbreviated median septum, holotype. Edinburg formation (lower Nidulites zone), 100 yards south of Battlefield Crystal Caverns entrance on U. S. Highway 11, 1 mile north of Strasburg, Strasburg (15’) Quadrangle, Va. G. Pleetotamaratmagna Cooper; new Species KUIIIs. Loar .oeer. Lae) oe PAT (38-42) Respectively pedicle, anterior, posterior, brachial, and side views, XX 1, of the holotype, 117185a; (43-47) respectively posterior, anterior, brachial, side, and pedicle views, X 2, of the holotype; (48, 49) pedicle and brachial views of an impression of the interior prepared by burning the shell and scraping it away from a complete specimen, X 2, paratype, 117185b; (50) posterior of the pre- ceding interior impression, & 3, showing slots of the spondylium; (51) plasticine replica of the posterior internal structures, 3, showing cruralium with only vestige of the median septum, prepared from the preceding. Shippensburg formation (Pinesburg member—lower part of cobbly Echino- Sphaerites zone), on U. S. Highway 40, on the west side of Conococheague Creek, 7 miles west of Hagerstown, Williamsport (15’) Quadrangle, Md. PLATE 123 PLECTOCAMARA A. Pieetocamarasuléaia Cooper) Tew Species. 2. REVVER PORE Se MeV E VOOR SEER (1) Brachial view of a complete specimen, 1, holotype, 117187; (2, 3, 4-6) respectively brachial, posterior, anterior, side, and pedicle views, X 2, of the preceding specimen. Benbolt formation, south side of Mount Hagan School, Hilton (T.V.A. 197-NW) Quadrangle, Va. B. Plectocamara cf. P. aseptata Cooper, new Species....... 2.2... ccccec cece cccscccs (7-11) Respectively pedicle, posterior, side, anterior, and brachial views of a pauciplicate specimen, X 3, figured specimen, 117180a. Sevier formation (near base), $ mile northeast of Miser, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. C. Plecroeamera aseptaia’ Cooper) new species. s) 2 ee oo: (12-16) Respectively pedicle, anterior, side, posterior, and brachial views of a complete specimen, X 3, paratype, 117180b. Horizon and locality same as preceding. 597 600 600 I130 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. De Plectocamara.erecta: Cooper, new. SPecies..2.):vaiss Risen seine dG Wieldnad. nem (17-21) Respectively anterior, posterior, pedicle, side, and brachial views of a complete specimen, X 3, holotype, 117183. Wardell formation (upper Receptaculites bed), Lee Valley, Lee Valley (T.V.A. 171-NW) Quadrangle, Tenn. E> Plectacamera costata, Cooper, new. Species sia) sist sw au. serene 4 selena .iweteneieeeey's (22-26) Respectively anterior, brachial, side, pedicle, and posterior views of a small paucicostate specimen, X 3, paratype, 117184. Lincolnshire formation (Hogskin member—Oligorhynchia zone), 0.4 mile east-northeast of Red Hill, 44 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. F. Plectocamara cf. P. costata Cooper, new: SpecieS.).i 0). .\cde cade ccccccdecdecccsiews (27-31) Respectively pedicle, anterior, side, posterior, and brachial views of a large specimen, X 3, figured specimen, 123457. Horizon and locality same as preceding. Ge) Plectocamara .aSepiata. COOPEL ..,..../s;.:0.+.<0. caved aie al iths eee Ms db albateia aaa srehe Waele tet (32-36) Respectively pedicle, brachial, posterior, side, and anterior views of a large specimen, X 2, paratype, I11361c; (37-40) respectively side, brachial, ante- rior, and pedicle views of a small specimen, X 3, paratype, 117182a; (41-44) posterior, anterior, side, and pedicle views of a specimen larger than the preced- ing, X 3, paratype, 117182b; (45-49) respectively anterior, pedicle, side, poste- rior, and brachial views of a large, fully grown specimen, X 3, paratype, 117182c; (50-54) respectively anterior, posterior, side, brachial, and pedicle views of a large but not fully grown individual, X 3, paratype, 117182d. Benbolt formation (base), east side of Brick Church, 14 miles west-south- west of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Tenn. PLATE 124 DoryTRETA, OLIGORHYNCHIA, ROSTRICELLULA, SPHENOTRETA A. Dorytreta ovata Coopers new Species 102) 2208 T TE SOU, PEO BON ie See (1, 8) Brachial and pedicle views of a medium-sized specimen, X 4, paratype, 117193a; (2-5, 9) respectively brachial, anterior, side, posterior, and pedicle views of a complete specimen, X 4, paratype, 117193b; (6, 7) pedicle and brach- ial views of a smail specimen, X 4, paratype, 117193¢. Lenoir formation (calcarenite under the Mosheim), south side of the cemetery at Friends Church, north corner of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. (10-13) Respectively anterior, pedicle, side, and brachial views of a nearly com- plete specimen, X 4, holotype, 117192. Lenoir formation (basal foot), west of Friendsville Station and just south of Friends Church, Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. B. Oligarhsachiassubplana;' Coopers). . :2ea34 . Jew .nhion eden. rehteueeak . eee. « (14-17) Respectively anterior, side, pedicle, and brachial views of a long, slender specimen, X 4, hypotype, 118014. Ward Cove formation, north of the road, 3 mile southwest of Mount Eager Church, Hogskin Valley, Powder Springs (T.V.A. 154-SW) Quadrangle, Tenn. C. Sphenoinete sulcnia Cooper: new speciesias. alti .k...d mand acoeelecentone cue aebiewe «is (18) Brachial view of a small individual, X 4, paratype, 117190b; (19-23) respec- tively posterior, brachial, pedicle, side, and anterior views of a large specimen, x 4, holotype, 117190a. McLish formation (bed 45), West Spring Creek, sec. 6, T. 2 S., R. 1 W,, Murray County, Okla. 508 508 597 667 662 666 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER D. Oligorhynchia inexpectata Cooper, new SPeECi€S........ccceecscccccccececceccees (24) Exterior of the brachial valve, X 3, paratype, 117203b; (25) pedicle exte- rior, X 3, holotype, 1172032. Red Knobs formation (between the Athens cobbly beds and the marble), road along Hiwassee River, 14 miles southeast of Charleston, Calhoun (T.V.A. 125-SE) Quadrangle, Tenn. EK, Ohgorhynchiansub plana Coopers. 52/42 SS. Babon ds sda ewes wale bain wie aeek (26, 27, 31) Side, anterior, and pedicle views of a small and elongate specimen, X 3, hypotype, 117201b; (28-30) side, brachial, and anterior views of a specimen larger than the preceding, 3, hypotype, 1172014. Sevier formation, + mile northeast of Miser, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. EF Splewetren:aeniicostras | (Hall) £204 et BPs A AS NT SN (32-35) Respectively brachial, pedicle, side, and anterior views of a complete speci- men, X 4, hypotype, Carnegie Mus. 5439; (36, 37) brachial and pedicle views of an imperfect specimen, 4, hypotype, Carnegie Mus. 5440. Crown Point formation, McCullough’s Sugar Bush, Chazy, Rouses Point (15’) Quadrangle, N. Y. (38) Pedicle view of a large specimen, X 1, hypotype, 118015. Crown Point formation, near Fort Cassin, Port Henry (15’) Quadrangle, Vt. G. Dorytreta bella Cooper new | Species’ 2202 FP. PS. POI, OI EIST A & (39-43) Respectively pedicle, anterior, side, posterior, and brachial views of a perfect specimen, 4, holotype, 1171914. McLish formation (upper), roadside ditch in NW} sec. 18, T. 2 N., R. 5 E., Pontotoc County, Okla. H. Rostricellula cuneate’ Cooper: new species f 70s 2 Te eek AAS (44, 45) Pedicle and brachial views of an imperfect specimen, XX 4, holotype, 117218a. Bromide formation (Mountain Lake member), west side U. S. Highway 77, sec. 25, T.2S., R. 1 E., 2 to 3 miles north of Springer, Carter County, Okla. }.. Sphenotreta ‘cunemn Cooper, new Species. 001... c ees cueveccescn eset cetnnes ss (46-50) Respectively anterior, pedicle, side, brachial, and posterior views of a complete specimen, X 4, holotype, 117189a; (51) brachial exterior, < 4, para- type, 117189¢; (52) another brachial exterior wider than the preceding, X 4, paratype, 117189d; (53) pedicle exterior, X 4, paratype, 117189b; (54) brachial and pedicle valve on slab, & 4, paratype, 117189c. Sevier formation, 4 mile southeast of Hambright Mine, 8 miles south of Cleveland, Tenn. Nz Dogviretarereversa Coopers lew) SPECIES si. tiene sete we ans cece cee ee crescents e (55-59) Respectively posterior, brachial, side, anterior, and pedicle views of a com- plete specimen, X 3, holotype, 117194; (60) brachial view, X 4, of holotype; (61) brachial view, <1, of holotype. Lincolnshire formation (Hogskin member), 0.4 mile east-northeast of Red Hill, 44 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quad- rangle, Tenn. PLATE 125 OLIGORHYNCHIA Ax Oligorhynchia.subplana, gibhasty: COOPCR ajc. cinte cis «Sic s 6% minre of9 0.2 draw oye 4;0,4 eh ag oyorereisid (1-3) Side, brachial, and pedicle views of a complete specimen, X 1, hypotype, 90751; (4-8) respectively anterior, posterior, brachial, side, and pedicle views, X 4, of the preceding. 662 664 667 637 665 668 662 I132 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page Lincolnshire formation (Hogskin member), Luttrell, Luttrell (T.V.A. 155-NW) Quadrangle, Tenn. (9, 10) Brachial and pedicle views, < 1, hypotype, 111304; (11-15) respectively anterior, side, posterior, brachial, and pedicle views, X 4, of the preceding specimen. Lincolnshire formation (Hogskin member), 3 miles west-southwest of Thorn Hill on road to Washburn, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. B. Olgorhynchis'sabplanasGoopers, 6.0 22% hers BSS. UGSIIB Dose. AS RS. A 662 (16-19) Respectively brachial, anterior, side, and pedicle views of a young speci- men, X 4, hypotype, 117202b; (20-24) respectively posterior, anterior, side, brachial, and pedicle views of a nearly full-grown specimen, X 4, hypotype, 117202a. Lincolnshire formation (Hogskin member), 200 yards north of highway along farm lane, 4 mile southwest of Fleanor Mill, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. (25-29) Respectively brachial, side, anterior, pedicle, and posterior views of a com- plete specimen, X 4, hypotype, 117200a; (31-35) respectively side, anterior, posterior, brachial, and pedicle views of a complete specimen, XX 4, hypotype, 117200b. Horizon and locality same as A, figs. 9-15, above. (30, 36) Brachial and pedicle views of two small specimens, X 4, hypotypes, 117201a, 117201b. Sevier shale, 4 mile northeast of Miser, Louisville (T.V.A. 138-SE) Quad- rangle, Tenn. C. Ohigorhynclia angulata Cooper oj: si0/5:0 00s s-ioiniase fe biejareaya swihlok boonies Baie s 659 (37-41) Respectively brachial, anterior, posterior, side, and pedicle views of a com- plete specimen, X 3, hypotype, 117106. Horizon and locality same as A, figs. 9-15, above. (42-46) Respectively anterior, posterior, side, brachial, and pedicle views of a com- plete specimen, X 4, lectotype, Y.P.M. S2258. Lincolnshire formation (Hogskin member), Luttrell, Luttrell (T.V.A. 155-NW) Quadrangle, Tenn. DD: ‘Oheorhynchia: (ingulatan COOpeE io oe % «; + a5piShanmnsse= pede oanishe, of 5s: Shs ordinance aaah lca 659 (47, 48) Brachial interiors, < 8, showing cardinalia, hypotypes, 117195b, II17195c; (49) brachial interior, * 6, showing brachial plates, hypotype, 117195a. Horizon and locality same as A, figs. 9-15, above. EK. Oligorhynchiasubplana gGabbosa 1, hypotype, 111291c; (38, 40, 41) side, anterior, and brachial views, X 2, of the preceding large specimen. Horizon and locality same as preceding. . Anerstrorkyncha, australss, CF OCrste)) o/s iete tas cboisde auepd «on a Ryaraio.sn)sataia evemacrrtte: gears ve (42-46) Respectively posterior, anterior, side, brachial, and pedicle views of a com- plete specimen, 2, hypotype, Columbia Univ., no number. Nealmont formation, 1 mile west of Tusseyville, Centre Hall (15’) Quad- rangle, Pa. . Ancestrorhyncha,cosiata (Ulrich, and (Cooper «,«,<)0.0.5.0:s0:5i 40s ore 0 © Gedgags teens Cas (47) Brachial view, 1, hypotype, 117204c; (48-52) respectively anterior, side, posterior, pedicle, and pcaal views, X 2, of the preceding. Bromide formation (Pooleville member—5 feet below the Viola limestone), road cut on Oklahoma Highway 99, NW4iNE4SW3 sec. 12, T. 1 N., R.6 E,, Pontotoc County, Okla. L -Ancistrorniuncha crassa, Cooper, mew. SpeCles:. «ace dese neuter ecco eeianiecaies (53-57) Respectively posterior, anterior, side, pedicle, and brachial views of a com- plete specimen, 2, paratype, Columbia Univ. 26407 (1016). Hatter (Hostler ?) formation, 1 mile south of Covedale, Blair County, Pa. J. Ancisirorhyncha costate Ulrich and ‘Cooper. .... .. oi. 6 «cv sametlay odie buen, enbts (58-62) Respectively anterior, posterior, pedicle, side, and brachial views of a 127 Page 659 625 623 620 620 621 623 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1135 Page well-preserved specimen, < 2, hypotype, 117204b; (63) brachial view, 1, of the preceding. Horizon and locality same as H above. PLATE 128 ANCISTRORHYNCHA, DREPANORHYNCHA, MIMELLA, ORTHORHYNCHULA, RHYNCHOTREMA A. Mimella gilbert® Cooper) new" Species inf ee ak SO be de AE: 471 (1-5) Respectively anterior, posterior, side, brachial, and pedicle views, 1, of the holotype, 123288a. Ellett formation (40 to 100 feet above Knox dolomite), west side road, 2 miles south of Lusters Gate, Blacksburg (15’) Quadrangle, Va. B. Ancistrorhyncha globularis Cooper, NEW SPECIES........cccceccccccctccctaceescs 624 (6-9) Respectively anterior, side, pedicle, and brachial views, X 2, of the holotype, 111278a. Bromide formation (Pooleville member), 4 miles west and 2 miles south of Davis, Murray County, Okla. GCG, Ancisirorhyncha’ 2. vacua Cooper, MEW. SPECIES ia. \ajo0101s) 4:80, 8 /0to ss0r0.esey0:0 0y0 90-010 5 w\0),Protosyga loeblichs. Cooper: new SPECi€S ; ais;4eisa/.s/ss « Re: here Rae whe htee ees 679 (17-21) Respectively posterior, anterior, brachial, side, and pedicle views of a com- plete specimen, X 4, holotype, 111412a. Bromide formation (Pooleville member—Ovoplecia gouldi zone), Rock Cross- ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. D. Protozyga uniplicata Cooper, New SPECIES... 2... cc cee ee ecb chk ole ec eeue Je oatepilee 687 (22-26) Respectively anterior, posterior, brachial, side, and pedicle views of a complete specimen, X 4, paratype, II11416a. Benbolt formation (lower), second road cut west of L. McDavid’s house, 1 mile west of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. E. Protozygaelongata: Gooper; new species. iatienc diiaen Jabs bad- Sees (Abas 677 (27-31) Respectively anterior, brachial, side, pedicle, and posterior views of a small specimen, X 4, paratype, 117241c; (32-36) respectively posterior, anterior, side, brachial, and pedicle views of a large specimen, X 4, holotype, 117241a; (37) brachial view of a specimen intermediate in size between the two preceding and showing the foramen well, x 4, paratype, 117241b. Bromide formation (Mountain Lake member), ditch on the east side of the road 2,300 feet south and 2,000 feet west of the NE. corner sec. 36, T. 1 S., R. 1 E., 1 mile west of Dolese Brother’s Crusher at Bromide, Johnston County, Okla. F.. Protosyga extquat (all). ¢. oot Lationad, £98... RSE Ree ae eae 678 (38-42) Respectively brachial, anterior, side, posterior, and pedicle views of a paratype, X 2, A.M.N.H. 714/1, 2b Trenton formation, Lewis County, N. Y. G. Protozyga tumida Cooper, néw Specitest' 2... 0. 22500 Joe. dd. OE 687 (43-47) Respectively posterior, brachial, side, anterior, and pedicle views of a com- plete specimen, X 4, holotype, 111440. Effna formation, McNutt Quarry, 12 miles southwest of Bland, Burkes Garden (15’) Quadrangle, Va. H. Protozyga: rotunda Cooper, new Species ho 6 fF VY cP POA IR, Tee 683 (48-52) Respectively anterior, side, pedicle, posterior, and brachial views of a com- plete specimen, X 4, paratype, 117248b. Wardell formation (Hesperorthis zone), quarry on Station Creek, 4 mile south of U. S. Highway 58, 2 miles east of Cumberland Gap, Wheeler (T.V.A. 153-SE) Quadrangle, Va. I.) Pratosyga sotunda (Cooper, new. SpecieSaiiae2 «arcs (RB(R als CAS elas wrens 683 (53-57) Respectively posterior, brachial, anterior, pedicle, and side views of a large PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER specimen, X 4, holotype, 111433a; (58) posterior of another specimen, 6, showing beak region, paratype, 111433b. Wardell formation (Hesperorthis zone), 0.3 mile southwest of Little Barren Church on old Tennessee Highway 33, Powder Springs (T.V.A. 154-SW) Quadrangle, Tenn. J. Protozyga rotundiformis Cooper, new 'SpeCieS .... cic cie cece eee lees ule deeawee (59-62) Respectively anterior, side, pedicle, and brachial views of a complete specimen, X 4, holotype, 117249. Lincolnshire formation (90 to 120 feet above the “Mosheim”), Evans Ferry section, on U. S. Highway 25E, 1 mile north of Indian Creek, Howard Quarter (T.V.A. 162-NW ) Quadrangle, Tenn. K.. Idtospiras?iwarthini- Cooper. news Species 15 . Leas OI PGT RE. (63-67) Respectively anterior, pedicle, side, posterior, and brachial views of a somewhat laterally compressed specimen, 1, paratype, Columbia Univ. 25919a; (68-72) respectively posterior, anterior, brachial, side, and pedicle views of an undistorted specimen, < 1, holotype, Columbia Univ. 25910b. Wappinger formation (top), railroad cut at Pleasant Valley, Poughkeepsie (15’) Quadrangle, N. Y. PLATE 141 CycLospira, ProrozyGaA, ZYGOSPIRA Fe (Cuclosmira quidraia Cooper. ew. SPECIES. sncie os pe:s te coacuhass <5 ces ssoe smu, «0 eigiannss (1-4) Respectively pedicle, anterior, brachial, and side views of a complete speci- men, X 3, paratype, 117256b; (5-7) posterior, brachial, and side views of an- other specimen, X 3, holotype, 117256a. Edinburg formation (Liberty Hall facies—top), 4 mile south of Dunkard Church, 6.9 miles S. 80° W. of Natural Bridge, Natural Bridge (15’) Quad- rangle, Rockbridge County, Va. (8-12) Respectively pedicle, posterior, side, anterior, and brachial views of a com- plete specimen, X 4, paratype, 117255a. Edinburg formation (lower Nidulites zone), cut on U. S. Highway 11, Hupp Hill, 1 mile north of Strasburg, Strasburg (15’) Quadrangle, Va. B. (Zygospara maiuiing Cooper, NEW SPECIES <6 5 ec < cs nicm seisie nes sas s0 cas sine os oped cals (13-17) Respectively anterior, side, posterior, brachial, and pedicle views, X 4, of the holotype, 117261. Little Oak formation, hill east of Leeds, Leeds (15’) Quadrangle, Ala. Ce ZV GOSpita._ CAT CUlOTTS COOPET,, THEW SPECIES» siccs cuiessicisieeccc.ce dees oh tyicieg ssc porta (18-21) Respectively pedicle, anterior, side, and brachial views of a complete speci- men, X 2, paratype, 117250. Carters formation (just under the bentonite), north side of U. S. High- way 70S, 0.8 mile east of Readyville, Cannon County, Tenn. D:. Projozyga microscopica (Looper, WOW SHECIES. 0... 4. qs 64 s.cc «ness 9 s.0c cs 0 0.6 «nage 60 (22-24) Brachial, side, and pedicle views of a complete specimen, XX 6, paratype, 117244. Ward Cove formation, on Virginia Highway 82, 14 miles northwest of Lebanon, Lebanon (T.V.A. 205-NE) Quadrangle, Va. He, CUClOsPinG HreciOSG, \COODEL. MEW (SPCCIES ai. siait s.cia'ers ere 4.46 mia) +/ece vada cis tis © pu = = auwinj eb: (25-27) Pedicle, brachial, and posterior views of a complete specimen, X 2, para- type, 117253a; (28-30) pedicle, brachial, and side views of another complete specimen, X 2, holotype, 117253b; (31, 32) brachial and anterior views of a large specimen, 2, paratype, 117253c. Edinburg formation (Lantz Mills facies—g9o0 feet above Dinorthis transversa zone and go feet below Oligorhynchia zone), 0.6 mile northwest of the junction 1147 Page 685 692 695 672 670 681 694 1148 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page of Virginia County Highways 616 and 621, Richpatch, Eagle Rock (15’) Quad- rangle, Va. F. Protozyga microscopica Cooper, new SPeCie€S..... 5020. s ees cove ceeecesereeees 681 (33-37) Respectively posterior, anterior, side, pedicle, and brachial views, < 4, of the holotype, 117243. Lincolnshire formation (Hogskin member), 0.4 mile east-northeast of Red Hill, 44 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. G: Protezygainasuta( Cooper, new species od. 2 ad sea). wellwuaree? esuleloowid. . 681 (38-41) Respectively pedicle, anterior, brachial, and side views of a complete specimen, X 4, holotype, 117246a. Whistle Creek formation, on U. S. Highway 60, 100 yards southeast of Whistle Creek, 2 miles northwest of Lexington, Lexington (15’) Quadrangle, Va. H. Pratozyga:suplicata, Cooper, new Species. oi Jasbtsn «acd eaten). slacks. aS 8O) 687 (42-45) Respectively anterior, brachial, side, and pedicle views of a well-preserved specimen, x 4, holotype, 111416b. Benbolt formation (lower), Brick Church, 14 miles west-southwest of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. 1. Protocega tumida Cooper. Mews, SPECIES: \a(.« Calan, 0:4 4 sjaece suid Aosie.e a a arden Wie mae eee ele 687 (46-50) Respectively anterior, side, pedicle, posterior, and brachial views of a well-formed specimen, X 4, paratype, 111400. Effna formation, McNutt Quarry, 12 miles southwest of Bland, Burkes Garden (15’) Quadrangle, Va. J. -Protezyga mcolletitaCW inchellvang (SCHuchett,) ax «cays cz aces abe pia pecjac cena suet 682 (51, 52) Side and brachial views of a complete but narrow specimen, X 2, hypotype, 49060a. Platteville formation, St. Charles, Winona County, Minn. (53-57) Respectively brachial, posterior, side, anterior, and pedicle views of a large specimen, X 3, hypotype, 24201a. Platteville formation, Elmira, Olmstead County, Minn. K,) Protozvga untplicata’ Cooper, new SPeCleS «<4 5 hc. + ais is 4 dowels so: balsuiee amnnice Sates 687 (58-61) Respectively pedicle, side, posterior, and brachial views of complete speci- men, X 4, paratype, 111414a; (62) pedicle view of another specimen in a cluster of Polylopia billingsi (Safford), X 4, paratype, 111414c. Murfreesboro formation (top), west fork of Stone River, where it crosses U. S. Highway 70S, 14 miles northwest of Murfreesboro, Murfreesboro (15’) Quadrangle, Tenn. Ls Protavga. supervoa COOper” Hew SPECIES 3.05 6 dain do's 's 62 «ae caine © acu acsanue ket eis 686 (63, 64) Brachial and pedicle views, X 2, holotype, 111455a; (65-69) respectively anterior, side, brachial, posterior, and pedicle views of the holotype, < 3, show- ing the ornamentation in detail. Auburn chert, 4 mile east of Auburn, Elsberry (15’) Quadrangle, Mo. PLATE 142 CycLosPirA, HALLINA, ProtozyGa, ZYGOSPIRA A. Profoevga costaia: Coopers, Ne wiSPECIES fata eso mayaiours 510 (31, 32) Interior and exterior of a large pedicle valve showing the pallial trunks, X 4, paratype, 116960a; (33, 34) exterior and interior of the brachial valve showing septum and cardinalia, X 4, paratype, 116960b; (35, 36) respectively xX 3 and X 4.5 enlargements of a brachial interior tilted to show the median septum, paratype, 116960c; (37) brachial interior showing cardinalia, 3, paratype, 116960d; (38) brachial interior tilted to show the posterior edges of the long brachiophores, 4, paratype, 116960h. Horizon and locality same as A above. E.. Pauroriiis ponderosa -Cooper New SPOCIeS « <.vejn «wjsie end die erere's bisrares « afe BE soy place 971 (39-43) Respectively pedicle, posterior, side, anterior, and brachial views of a large and complete specimen, X 1, holotype, 117294a. Benbolt formation (lower), 0.2 mile south of the middle fork of Moccasin Creek, 14 miles south of Hansonville, Hansonville (T.V.A. 205-SW) Quad- rangle, Va. F, Cyclomyonia peculiaris Cooper, new SP€Ci€S.......... cece cece cee c ee eccceatecues 975 (44-48) Respectively pedicle, posterior, brachial, side, and anterior views of a young, complete specimen, X 4, paratype, 117300a; (49, 50) exterior and interior of a young pedicle valve showing the callosity anterior to the muscle area and the pallial marks on each side of it, X 4, paratype, 117300b; (51, 52) side and exterior views of an adult pedicle valve, X 2, holotype, 117300c; (53) interior of the preceding pedicle valve, X 3, showing callosity anterior to muscle area; (54) interior of an imperfect pedicle valve showing the callosity anterior to the muscle area, X 2, paratype, 117300d; (55, 56) exterior and interior of a brachial I154 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. valve, X 4, paratype, 117300e; (57) imperfect brachial interior showing median ridge and muscle scars, < 3, paratype, 117300f; (58) brachial interior showing cardinalia, < 4, paratype, 117300g; (59) posterior part of a large brachial valve showing the adult cardinalia, % 4, paratype, 117300h; (60, 61) two small brachial valves showing muscle scars and genital markings, x 4, paratypes, 117300i, 117300). Horizon and locality same as A above. G. Eremotrema biconvexum Cooper, NeW SPECIES... 2... keke ce cece cece eceencecs (62) Imperfect pedicle interior showing muscle scars and pallial marks, x 3, paratype, 117349. Horizon and locality same as E above. PLATE 147 REUSCHELLA A. Reuschella cf. R. americana Cooper, new Species.........cccccccccccccccccserces (1) Exterior of the pedicle valve, 1, figured specimen, 117346a; (2) plasticine replica of the brachial valve, 1, prepared from figured specimen, 117346b; (3) impression of the pedicle interior, <1, figured specimen, 117346c; (4, 5) respectively X I and X 2 views of a plasticine replica of the brachial cardinalia, prepared from mold, figured specimen, 117346d; (6) impression from which the preceding was prepared, <2; (7) impression of the brachial interior, X 2, figured specimen, 117346e. Jacksonburg formation, 14 miles south of Annandale, Hunterdon County, N. J. B. Reuschella americana Cooper, Mew SPECi€S.. 2... 2... cece cece ese cceercunens (8) Exterior of the brachial valve, 1, plasticine replica of mold, paratype, 110840f; (9) plasticine replica of the pedicle exterior, <1, holotype, mold 110840b; (10) plasticine replica of another pedicle exterior, 1, paratype, mold 110840a; (11) plasticine replica of the brachial exterior, 1, paratype, mold 110840w; (12) impression of the pedicle interior, X 1, paratype, 110840c; (13) rubber replica of the pedicle interior showing the dental plates, I, prepared from paratype, 110840e; (14) impression of the pedicle interior, 1, showing the slots of the dental plates and the muscle area, counterpart of holotype, 110840b; (15) enlargement of an impression of the pedicle muscle area, X 2, paratype, 110840d; (16) impression of the brachial interior, 1, paratype, 1108401; (17) posterior part of preceding enlarged X 2 to show details of the impression of the cardinalia; (18) rubber replica of the cardinalia, 2, prepared from the preceding mold; (19) impression of the interior of another brachial valve, XI, paratype, 110840g; (20) rubber replica of the cardinalia of the preceding mold, X 2. Oranda formation, 0.6 mile northwest of Linville Station, Broadway (15’) Quadrangle, Va. PLATE 148 Genus and species undet., PHRAGMORTHIS, REUSCHELLA At \Genistanduspectess TMGet.c se cat cerns cis hiclers eaters Mele creme n cine reeie cetne cracks cls (1, 2) Respectively 2 and X1 enlargements of an impression of the pedicle interior, figured specimen, 117068b; (3, 4) respectively 1 and X 2 enlarge- ments of an impression of the brachial interior, figured specimen, 117068a. Athens formation (base), 23 miles south-southeast of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. B. Phragmonihiscoutisy Coopers lew Species... «sc. oot nevlerea creieiclete ccs Sales ccinelaiete (5) Exterior of the pedicle valve, < 3, paratype, 116947b; (6) pedicle interior 127 Page 1006 510 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER T155 Page tilted to show callosity anterior to muscle area, X< 3, paratype, 116947a; (7) pedicle interior, X 3, showing teeth, paratype, 116947c; (8, 9) interior and exte- rior of a specimen preserving both valves in contact but broken through the mid- dle, showing high median septum and long, slender brachiophore, 4, paratype, 1169471; (10) brachial interior, < 6, showing deep notothyrial cavity with traces of cardinal process and strong median septum, paratype, 116947h; (11) same specimen as preceding, X 6, but tilted to the side to show high median septum and long brachiophore. Edinburg formation (base of Liberty Hall facies, just above Botetourt forma- tion), 1.8 miles S. 4° W. of Bethel Church, 5.9 miles due east of Harrisonburg, Harrisonburg (15’) Quadrangle, Va. C. Phragmorthis butist Cooper), Mew" SPOCl€S 0s. s+ oc ole einjece cwicicisie aes spe ies oleae 510 (12-17) Respectively anterior, side, posterior, brachial, pedicle, and brachial tilted so as to show delthyrium, X 2, holotype, 116959m; (18) pedicle interior, < 2, showing form of muscle area and callosity anterior to it and pallial trunks bounding it, paratype, 116959k; (19) brachial interior, X 2, paratype, 116959h; (20) same as preceding, X 4, showing deep notothyrial cavity; (21) preceding specimen, 4, tilted to show high median septum and elevated plates under adductor field and long brachiophore; (22) same as preceding, X 4, showing plates under adductor field and small cardinal process; (23) brachial interior tilted to show high median septum and iong brachiophores, X 3, paratype, 116959-1; (24) another brachial interior tilted to show the long brachiophores and adductor plates, X 3, paratype, 116950d; (25, 26) pedicle interior in normal view and tilted to show form of muscle area and callosity anterior to it, X 4, paratype, 116959b. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. DD): SUR Ca Relig PEN OIS, ESASSICE \ cae) MR aps hw Sie ayer 3 al o aterm yh, opdidb" ac. oinmisih =ppe.nyeatane™ © © (1) Brachial view of a small specimen, 1, hypotype, Columbia Univ. 26405 (1013)b; (2, 3) brachial and posterior views, X 2, of the preceding; (4-7) respectively brachial, anterior, side, and pedicle views of a complete and well- formed specimen, xX 2, hypotype, Columbia Univ. 26405(1013)a; (8) pedicle view, X 1, of preceding; (9, 10) brachial and pedicle views of a crushed but larger specimen than the two preceding, 2, hypotype, Columbia Univ. 26405 (1013)c. Hatter formation (Hostler member), Waterside, Everett (15’) Quadrangle, Pa. 1161 Page 988 990 996 996 gor 1162 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. B. Paurorthis fasciculata‘Cooper, new species. 0. 20i). ele Ui. DUNG, OT (11-13) Brachial, side, and pedicle views of a complete specimen, 2, paratype, 117280¢g. Little Oak formation, junction of Bailey Gap and main roads, 1} mile north- east of Newhope Church, Cahaba Valley, SW4iSW+3 sec. 13, T. 19 S., R. 2 W,, Vandiver (15’) Quadrangle, Ala. C. Pionodema subaequata (Contad) ; 2... saw errosit tates Bec tee oh o/kietetare Lcjetnatttel. ¢ koe (14-18) Respectively posterior, anterior, side, brachial, and pedicle views of a perfect specimen, 1, hypotype, 117232. Barnhart formation, cut on U. S. Highway 67, 0.2 mile south of Koch Valley School, 2 miles south of Barnhart, Jefferson County, Kimmswick (15’) Quad- rangle, Mo. D:. Pionodema: sulcata Coopet, mew ,/SPECieS .2.. < chs,at-,c.oehel- etale serete win epee aeteialeleiess eipisuctesse (19) Exterior of the brachial valve, < 2, paratype, 117338d; (20) brachial exte- rior, X 2, paratype, 117338c. Nealmont formation (upper shaly bed, Conradella fauna), southern (old) quarry of the National Lime Company, Shrader Station = Naginey, Lewistown (15’) Quadrangle, Pa. EK. Phanodema’ suicata Cooper, Hew SPECIES... s «a penshs osc cueusk ce ate metas amakic (21) Brachial view of a complete and nearly perfect specimen, <1, holotype, 117337a; (22-26) respectively brachial, anterior, side, posterior, and pedicle views, X 2, of the preceding specimen; (27, 28) respectively * 1 and XX 2 views of the brachial interior showing pallial marks and flaring brachiophore support- ing plates, paratype, 117337b. Cave Creek formation (below the lower bentonite), on the L. and N. RR., 100 yards south of the watertank, Hagan, Rose Hill (T.V.A. 161-NE) Quad- rangle, Va. (29) Pedicle interior, X 3, showing muscle area and short median ridge anterior to it, paratype, 117339a; (30) posterior of the brachial interior showing brachio- phore supporting plates set wide apart and thin-shafted cardinal process, X 3, paratype, 117330b. Cave Creek formation, on U. S. Highway 58, 31 miles east of Cumberland Gap, Wheeler (T.V.A. 153-SE) Quadrangle, Va. F. Fasctferaxsubcarinata (Ulrich and) Cooper 228 . SOG. PR, ES, Se (31) Brachial interior, 2, showing deep notothyrial cavity and subparallel brachiophore supporting plates, hypotype, 117314. Wardell formation (40 feet beneath Hesperorthis zone), Evans Ferry section, on U. S. Highway 25E, 4 mile north of Indian Creek, Howard Quarter (T.V.A. 162-NW) Quadrangle, Tenn. G, Pramadena manuscula IWallardisig, 22 Geb oasis’ s.sce.0 disnie ie a/cacdcus xia: bs gianeee two ee (32-36) Respectively side, anterior, pedicle, posterior, and brachial views of a nearly perfect specimen, <1, hypotype, 117329a; (37-41) respectively side, anterior, pedicle, posterior, and brachial views, X 2, of the preceding specimen. Lebanon formation, Lebanon, Wilson County, Tenn. (42) Brachial interior, X 3, showing muscle scars, brachiophore supports, slender cardinal process, and deep notothyrial cavity, hypotype, 117328. Lebanon formation, near La Vergne, Rutherford County, Tenn. PLATE 156 PIONODEMA A: (Peenodemna SaDGegUste “COOREAG) ©. Konies «25s ots 5.010 2m vopamibrominaemaresiae ban es Mag (1) Brachial view of a complete specimen, 1, hypotype, 117335a; (2, 3) brachial and pedicle views of the preceding specimen, 2, showing ornamentation. 994 994 1002 OOI 992 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER es) O D. a Auburn chert (near top), Apex Station, C. B. and Q. RR., south of Elsberry, Elsberry (15’) Quadrangle, Mo. (4) Pedicle interior showing the elongate and subflabellate diductor scars, the nar- row adductor track, and the short, flaring dental plates, X 2, hypotype, 117336a; (6) brachial interior, X 2, showing flaring brachiophore supports, long-shafted cardinal process and sockets, hypotype, 117336c; (7) same as the preceding, X 2, tilted to show the brachial interarea, notothyrial cavity, myophore of the cardinal process, brachiophores, and fulcral plates; (8) same as preceding, X 2, tilted to side to show fulcral plates; (11) brachial interior tilted to show flaring brachiophore plates, 14, hypotype, 117336d; (12) cardinalia of the preceding, X 3, showing fulcral plate and brachiophores; (9) another brachial interior, X 2, showing the adductor scars and cardinalia, hypotype, 117336b; (10) same speci- men as preceding, X 2, tilted to side to show fulcral plate, brachiophores and their supporting plates. Barnhart formation, cut on U. S. Highway 61, 0.2 mile south of Koch Valley School, near Barnhart, Kimmswick (15’) Quadrangle, Mo. (5) Posterior part of brachial valve showing muscle scars, adductor track, and apical plate, < 3, hypotype, Y.P.M. S1359; (13) thin section of part of pre- ceding, ca. X 25, showing endopunctae. View shows punctae concentrated into linear arrangement along the costellae. Photograph by L. G. Henbest. Decorah formation (Guttenberg member ?), St. Paul, Minn. PLATE 157 CRISTIFERINA, DALMANELLA, ONNIELLA, PAUCICRURA, PIONODEMA <) Oppped leanikee Pals Sic CD EC ACLs) ig: ancnayer ole 40° alotauane Wisstcniataye ‘sips nioe®: 3, paratype, 117350b. Benbolt formation (lower), south side of Mount Hagan School, Hilton (T.V.A. 197-NW) Quadrangle, Va. (41) Pedicle interior, showing deep and elongate notothyrial cavity and diductor scars extending anterior to it, X 2, paratype, 117348a. Benbolt formation (lower), 0.2 mile south of the middle fork of Moccasin Creek, 14 miles due north of Hansonville, Hansonville (T.V.A. 205-SW) Quad- rangle, Va. (42) Brachial interior, 2, showing thickenings on brachiophores and _ short- shafted cardinal process, paratype, 117347b. Benbolt (lower), east bank of a sinkhole, 300 feet south of Lakeview Church, on Virginia Highway 71, Moll Creek (T.V.A. 196-SE) Quadrangle, Va. PLATE 161 CRISTIFERINA, DALMANELLA, ONNIELLA A: Dalmanelia sulcata Cooper, Mew: SPOCleS« .6....056< oe osns os ostemsetgeee tptetdier onlt se (1-5) Respectively brachial, pedicle, anterior, side, and posterior views of a large adult, I, paratype, 117365b; (6) another complete specimen, X 1, holotype, 117365a; (7-11) respectively side, posterior, anterior, pedicle, and brachial views, 2, of the holotype; (12) interior of the pedicle valve showing muscle region, X 2, paratype, 1232392; (13) another pedicle interior showing dental plates, X 3, paratype, 117365h; (14) interior of the brachial valve, <2, paratype, 117365f; (15) interior of another brachial valve, X 2, showing short median ridge, paratype, 117365e; (16) interior of the brachial valve showing notothyrial chamber and cardinal process, X 3, paratype, 1173651. Hermitage formation (base), on the east side of U. S. Highways 70S and 41, 4.2 miles southeast of Nashville, Hermitage (15’) Quadrangle, Tenn. B: Dabnaneila Fara Cooper Mew sspecies eases oe tece Sede s sc lecct cote sences esas (17) Brachial view, X I, of the holotype, 117362c; (18-22) respectively posterior, anterior, brachial, pedicle, and side views, X 2, of the holotype. Curdsville formation, on Tennessee Highway 33, 54 miles northeast of May- nardville, Maynardville (T.V.A. 145-SE) Quadrangle, Tenn. C. Onmelia.?. blanoconvesa Cooper, MCW SPECIES... 9.2. vro,0/2,0 sjeje'e nie nis + as, tiene dis Sala bisa (23-27) Respectively pedicle, brachial, side, posterior, and anterior views, X I, of the paratype, 117370a; (28) another complete specimen, 1, holotype, 117370b; (29-31, 33, 34) respectively posterior, anterior, pedicle, brachial, and side views, X 2, of the holotype; (32) another complete specimen, X 2, paratype, 117365c; (35) impression of the interior of a brachial valve showing slots formed by brachial process, 2, paratype, 117305d; (36) interior of the brachial valve showing cardinalia, X 3, paratype, 117365e. Hermitage formation (base), on Tennessee Highway 53, 0.7 to 1.5 miles south of Woodbury, Woodbury (15’) Quadrangle, Tenn. DD: Crastiferina) cristifera ‘Cooper, mew species) io. 00s 3 noe OEE EIS (37) Slab showing impressions of the interior of a pedicle valve and four brachial valves, X I, paratype, 117357b; (38) replica of the brachial interior, X 2, pre- pared from mold in upper left hand of preceding figure. Oranda formation, on the Bowman Farm, 0.3 miles east of U. S. Highway 11, 1 mile southwest of Woodstock, Edinburg (15’) Quadrangle, Va. 1167 951 949 955 963 1168 A. SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. PLATE 162 DALMANELLA, PAURORTHIS, PIONODEMA Proncaema conrad, UN. El. VV MICHELL) |. Selassie cule aenetan ask as iia wialegwais oom oa: ee ieuapeie (1) Brachial view of a complete specimen, X I, hypotype, 117325a; (2-6) respec- tively anterior, pedicle, side, brachial, and posterior views of the same specimen, X 2, showing details of the ornamentation. Platteville formation (McGregor member), on U. S. Highway 52, 2 to 3 miles north of Fountain, Goodhue County, Minn. . Pionodema tennesseensis Cooper, NEW SPECIES......0cceccccccccscvcnccccececccs (7-11) Respectively anterior, posterior, side, brachial, and pedicle views of a com- plete specimen, X 1, holotype, 117340a; (12) brachial view of a somewhat im- perfect specimen, 2, showing ornamentation, paratype, 117340c. Hermitage formation (base), on the east side of U. S. Highway 70S and 41 near its junction with Spence Lane, 4.3 miles southeast of Nashville, Hermitage (15) Quadrangle, Tenn. Dalmaneliavraran Coopers Tew Species tase ce wae ce es Pete ee eee (13) Brachial view of a young, complete specimen, 1, paratype, 117362b; (14-18) respectively anterior, side, posterior, brachial, and pedicle views, X 2, of the same specimen. Curdsville formation, on Tennessee Highway 33, 54 miles northeast of May- nardville, Maynardville (T.V.A. 145-SE) Quadrangle, Tenn. Paurorthis@catawb ensis Butts soot ce eek ek ce ae cee te ae te eae s ee eee ome. (19, 20) Side and brachial views of a large complete specimen, <1, hypotype, 117278a; (21) same, X 2, to show ornamentation; (22) interior of the brachial valve showing the cardinalia and median ridge, 2, hypotype, 117278b; (23) impressions of the interior of two pedicle valves showing the muscle scars, X 2, hypotype, 117275. Blockhouse formation, 1.6 miles south-southwest of Toqua School, Vonore (T.V.A. 139-SW) Quadrangle, Tenn. Pionodema comerata Cooper, BEW (SPeClESs oi) sjasn el «0 Uiiis dere of dee Saeed Hale eddie es (24) Plasticine replica of the exterior of an imperfect brachial valve, X 2, para- type, 117343b; (25) plasticine replica of the exterior of a small pedicle valve, X 2, paratype, 117343i; (26) impression of the interior of a large pedicle valve showing the muscle scars and pallial impressions, X 2, paratype, 117343a; (27) impression of the brachial interior, 2, showing notothyrial chamber and long shaft of cardinal process, paratype, 117343m; (28) plasticine replica of the brachial interior showing median ridge, and notothyrial chamber, x 2, taken from paratype, 117343c; (20) side view of the brachial interior impression, x 2, paratype, 117343); (30) impression of a young brachial valve interior, << 2, showing notothyrial chamber, paratype, 117343-0; (31) plasticine replica of the brachial interior, X 2, prepared from mold, holotype, 117343k, showing elongated notothyrial chamber ; (32) small slab showing impressions of pedicle and brachial valves, X 1, paratype, 117343a. Sevier formation (Bacon Bend member, top, just under Bays red beds), 4 mile northeast of Fourmile Church, Tallassee (T.V.A. 139-SE) Quadrangle, Tenn. PLATE 163 APORTHOPHYLA, EICHWALDIA, INGRIA A. Eichwaldt@asubtmgonalys \Bainesier mire ice so citsicelc net tear ean clertlaiehsis tie aietere (1-3) Brachial, pedicle, and side views of a complete specimen, X 1, hypotype, 92360d; (4, 5) exterior and interior of the posterior part of a pedicle valve, X 2, 127 995 949 964 986 947 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER 1169 Page hypotype, 92360f; (6) brachial interior, X 2, showing median ridge, paratype, G.S.C. 1145d. Rockland formation, Paquette Rapids, Ottawa River, Canada. B: Ingria\cloudi Imes and Cooper yyhstis, gc GOR ole W's ein. < alec esalone'e wm ole oles bibeie%efa, Sales 700 (7-9) Brachial, pedicle, and side views of a complete specimen, X 1, hypotype, 117550c; (10, 11) brachial and pedicle views of the preceding, X 2, showing the ornamentation; (12) brachial view of a small specimen, X 1, showing acute ears, hypotype, 117559e; (13) exceptionally well preserved pedicle interior, < 2, show- ing ridges developed anterior to the muscle area, hypotype, 117550j; (14, 15) respectively 1 and X 2 enlargements of another pedicle interior, showing the muscle area but only a slight development of the anterior thickenings, hypotype, 117550d; (16) brachial interior, X 1, hypotype, 117559b; (17, 18) interior and posterior views of the brachial valve, XX 2, showing cardinal process, short median ridge, chilidium, and pallial marks, hypotype, 117550g; (19) posterior of the preceding, X 4, showing cardinal process and chilidium covering it; (20) brachial interior, X 2, showing pallial markings exceptionally well developed, hypotype, 117550f. Pogonip group (mottled zone 700 feet below the Eureka quartzite), base of first ridge east of Frenchman Flat, Las Vegas (1°) Quadrangle, Nev. C.. Aporthophylatyvpe Ulsieln and) Cooper a dcroxete. iu Sos ties ladys sland» sows dhwisle at 698 (21) Impression of the brachial valve, X 2, showing pits left by pseudopunctae, syntype, 92866e; (22) plasticine replica of the brachial interior prepared from the preceding impression, X 2, showing orthoid cardinalia but pseudopunctate interior surface; (23) posterior of a brachial valve showing the cardinalia, 3, syntype, 92866h; (24) impression of the pedicle interior, < 1, hypotype, 117566, showing short, orthoid muscle scar. Upper Pogonip group (lower Rhysostrophia zone), about 1 mile above the entrance in Ikes Canyon, Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. PLATE 164 APORTHOPHYLA, TOQUIMIA A. Aporthaphylavaurora, (Billings) < .wetietgeee so OR SG ee SOUR. 608 (1) Exterior of the pedicle valve, & 1, syntype, G.S.C. 560a; (2) same enlarged X 3, to show pits left by pseudopunctae; (3) impression of the brachial exterior, X 1, syntype, G.S.C. 560b. Table Head series, Point Rich, Newfoundland. Bi Magura wire Ciricd ane, OONer a. a ccs oc tus cur © cae cacieig. cutis oie torus ies Otis # wn ee teeiova 608 (4) Pedicle view of a large specimen, X 1, hypotype, 117567e; (5) pedicle view of an incomplete specimen, X 1, with outline restored, hypotype, 117567j; (6) posterior of another specimen, showing the pseudodeltidium, > 3, hypotype, 117567h; (7) plasticine replica of the pedicle interior, showing form of the muscle area indistinctly and the subperipheral rim, X 1, prepared from the fol- lowing; (9) impression of the pedicle interior showing the muscle area and the depression formed by the subperipheral rim, X 1, hypotype, 117567a; (8) exte- rior of a large pedicle valve, 1, with outline restored, plasticine replica of the exterior prepared from impression, paratype, 91595e; (10) pedicle impression, X I, counterpart to preceding, showing the large subflabellate muscle area; (12) enlargement of the muscle area, < 2, of the preceding; (11, 13) respectively xX 1 and X 2 views of a plasticine replica of the brachial interior prepared from the following; (14) impression of the brachial interior prepared by dissolving the shell away from the matrix to leave the impression, X 2, hypotype, 117567d. I1I70 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page Upper Pogonip group (Rhysostrophia zone), 1 mile above the mouth of Ikes Canyon, Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. PLATE 165 TAPHRODONTA A. Taphrodonta parallela Cooper, new Species 6.0) oss et kL eee 741 (1) Brachial view, 1, of the holotype, 117562e; (2-6) respectively brachial, pedicle, side, anterior, and posterior views, < 2, of the holotype; (13) posterior of the holotype, 6, showing cardinal process, pseudodeltidium, and apical fora- men; (7) pedicle interior, X 3, showing peculiar teeth, muscle area, and pallial marks, paratype, 117562g; (8) same as preceding tilted to show fossettes in teeth and short flaring dental plates, * 3; (9) same view as preceding, X 4, showing dental plates, crural fossettes, and inner subperipheral thickenings; (10) deltidial region of the preceding, 5, showing pseudodeltidium and plates on inside of teeth; (11) same as preceding, < 2, showing structures in perspective; (12) another pedicle interior, tilted to show deposits on inside of teeth and delthyrium, x 3, paratype, 117562b; (14) another pedicle interior, 2, showing pallial marks and muscle area, paratype, 117562h; (15) posterior of preceding tilted to look into delthyrial cavity, X 4, showing slight median ridge at apex, deposits inside teeth, and genital marking; (16) brachial interior, < I, paratype, 117562i; (17) same as preceding but X 2, showing anterior pallial markings, cardinal process, and brachiophores; (18) same view, X 4, showing cardinalia and pallial markings in detail; (19) posterior view of the preceding, < 4, showing the nar- row cardinal process and long brachiophores; (20, 21) another and more perfect brachial interior, X 3 and X 2, showing the wide, elevated median region and the pallial mark on each side of it, paratype, 117562f; (22) posterior of the preceding, < 5, showing the cardinalia in greater detail. Upper Pogonip group (upper 30 feet), 1 mile above the entrance to Ikes Canyon, Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. PLATE 166 APATOMORPHA A.. Apatamorpha, pulchella .CRavanond) 5 oi: 0% « 20 amuceroyetimdinbs < 2, of the holo- type; (17) brachial view of another complete specimen, smaller than the holo- type, X 2, paratype, 1110651; (18) pedicle interior showing pallial and muscle marks, X 2, paratype, 111065e; (19) another pedicle interior, 2, showing good development of the pallial marks, paratype, 111065b; (20) brachial interior, x 2, showing median septa and cardinalia, paratype, 111065h; (21) another brachial interior showing median septum, notothyrial thickening, and pallial marks, x 3, paratype, 111065f; (22) posterior of a brachial valve showing narrow chilidium and simple cardinal process, X 3, paratype, 111065j; (23) another brachial inte- rior, X 2, showing pallial marks, paratype, 111065c. Arline formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. PLATE 169 IsOPHRAGMA, PALAEOSTROPHOMENA, SOWERBYITES A. Isophragma subabbreviatum Cooper, Mew SPeCi€S.......eceeeccnccccecceccceeees 738 (1) Brachial view, < 1, of the holotype, 110916a; (2, 3) posterior and brachial views, X 3, of the holotype; (4) brachial interior, < 3, of the holotype; (5) interior of a fragmentary pedicle valve showing anterior thickenings and pseudo- deltidium, 3, paratype, 110916b; (6) brachial interior, X 3, showing median ridge, holotype; (7) same view of the same specimen, X 3, tilted to show ante- rior edge of median ridge; (8) posterior of the brachial valve of the holotype, X 4, showing the cardinal process and sockets; (9) cardinalia of the brachial valve, < 4, of the holotype. Arline formation (middle), north side of wagon road in glade, 4 mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. B.. Sowerbyttes itviseprarus “CWallatd) o> ve sckas es oa cute cs cn ce eek ages cee wearenat.s 730 (10) Brachial view of a complete specimen, X 2, hypotype, 117414b; (11) brachial interior, X 2, showing characteristic median septum, hypotype, 117414a; (12) pedicle interior showing callosities at anterior end of long diductor scars, X 2, hypotype, 11741 4c. Lincolnshire formation (Hogskin member), U. S. Highway 25E, north of Thornhill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. C. Palaeostrophomena superba Cooper, new SpecieS..........eccccesccceecececnnees 706 (13) Exterior of a pedicle valve, 2, paratype, 117380. Arline formation, 1 mile northeast of Friendsville, Louisville (T.V.A. 138-SE) Quadrangle, Tenn. (14, 16) Pedicle and brachial views of a complete specimen, X 2, paratype, 111070f; (17) brachial view, X 1, of the preceding; (15, 18) pedicle and bra- chial views of a specimen larger than the preceding, X 2, holotype, 111070m; (19, 27-29) brachial, posterior, anterior, and side views, <1, of the holotype; (20-22) respectively X 1, X 2, and X 3 views of the pedicle interior showing the muscle and pallial marks, paratype, 111070-1; (23, 24) pedicle interiors, X 2, showing the pallial marks, paratypes, 111070p, 1110701; (25, 26) fragments of the brachial valve showing septum, X 2, paratypes, 111070h; 111070g. Horizon and locality same as A above. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1173 PLATE 170 TSOPHRAGMA Page A. Isophragma ricevillemse Cooper, NEW SPECIES... . <2. eevee seweccceersercneccce 737 (1) Plasticine replica of the pedicle exterior, X 2, paratype, 110923g; (2) brachial view of a complete specimen preserving its shell, < 1, holotype, 110918a; (3-7) respectively brachial, pedicle, side, posterior, and anterior views, X 2, of the holotype; (8) impression of the pedicle interior showing the scalloped thicken- ings inside the anterior margin, X 2, paratype, 110923b; (9) plasticine replica of the pedicle interior prepared from the preceding, 2, and showing the ante- rior thickenings; (10) impression of the interior of another pedicle valve, X 2, paratype, 110923a; (11) plasticine replica of the pedicle interior, 3, prepared from the preceding mold; (12) impression of the brachial interior, showing the long duplex ridge, X 2, paratype, 110923c; (13) plasticine replica of the brachial interior, X 2, prepared from the preceding; (14) impression of another brachial interior, X 2, paratype, 110923d; (15) plasticine replica of the brachial interior prepared from the preceding mold, X 3, showing the double median ridge, cardinal process, and pallial marks. Athens formation (base), just east of the intersection, 2} miles south-south- east of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. B;, dsaphraoging sulcaiien Cooper, new Species . ...,. = yen. ete fajase anes seca caemde vashhailis « 739 (16) Brachial view of a poorly preserved specimen, X 2, holotype, 110917. Just above Lenoir formation with Maclurites and under the Pratt Ferry, 0.15 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. C. Isophragma extensum Cooper, NEW SPECIES. 6... rccvece ese cecunccuveneessciein ces 735 (17) Brachial view of a complete specimen, X 2, paratype, 117375. Little Oak formation, junction Bailey Gap and main roads, Cahaba Valley, SWiSW3 sec. 13, T. 19 S., R. 2 W., 1} miles northeast of Newhope Church, Vandiver (15’) Quadrangle, Ala. D. Isophragma) extensuan: Cooper.) MEW, SSPCCIES «jot a5. <:0'5,< sajeid e ni He 2, with outlines restored. Arline formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. D. Isophragma ‘biseptatum ‘Cooper, new SPECIES... 2... ccc. cc cae ees cas aes nines ces’ (20) Brachial view, 1, of the holotype, 110905a; (21-23) pedicle, side, and brachial views, X 2, of the holotype; (24, 25) pedicle and brachial views of an- other complete specimen, X 2, paratype, 110905c; (26, 27) respectively XI and X 2 enlargements of a pedicle interior, paratype, 117373a; (28) another pedicle interior, 2, showing subperipheral thickenings, paratype, 110905b; (29) bra- chial interior, X 2, showing median ridges and cardinalia, paratype, I10905d. Benbolt formation (40 feet above base), Green Valley, + mile southeast of Green Valley Church, 3 miles southwest of Lebanon, Brumley (T.V.A. 205-SE) Quadrangle, Va. E. Isophragma biseptatwm Cooper, new SpeCieS...... 0.02. eee c cece ect ccceeccccces (30) Brachial view of a complete specimen, X 2, paratype, 117374b; (31) impres- sion of the brachial interior, 2, paratype, 117374a; (32) plasticine replica of the brachial interior, 2, prepared from the preceding mold, showing the median septa. Botetourt formation, south side of U. S. Highway 60, 1 mile northwest of Lexington, Lexington (15') Quadrangle, Va. PLATE 172 HESPERONOMIELLA, PAUCICOSTELLA, PTYCHOGLYPTUS, TAFFIA A. Poucicostella canadensis (Cooper, new xspecies. ouewen. aes Pet (1) Exterior of a pedicle valve, X 2, paratype, 117395a; (2) exterior of a fairly sulcate pedicle valve, 2, holotype, 117395b; (3) another pedicle valve, X 2, paratype, 117395c; (4) exterior of the brachial valve, X 2, paratype, 117395d; (5) a wide pedicle valve, X 2, paratype, 117395f; (6) brachial exterior, x 2, paratype, 117395e. Boulder in Mystic conglomerate, Range 6, Lot 21, 2.6 miles north and 4 mile east of Mystic, Stanbridge Township, Quebec, Canada. B. Pitychoglyptus 2? indies, Cooper, new species: oo Si 72h. Sores Fk (7) Pedicle exterior, X 2, paratype, 117392a; (8) plasticine replica of the brachial 127 Page 715 735 734 734 816 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER exterior, X 2, paratype, 117392b; (9) another pedicle valve, x2, paratype, 1232544. Table Head series, Table Point Cove and Table Point, Newfoundland. C. Piychoglyptus ? kindlei Cooper, new species. §. £22200. SE. (10) Plasticine replica of the brachial valve, < 2, paratype, 66290a; (11) plasti- cine replica of another brachial valve, 2, paratype, 66290b; (12) plasticine replica of the pedicle exterior, 2, holotype, 66290c. Boulder in Mystic conglomerate, Range 6, Lot 20, 24 miles north of Mystic, Quebec, Canada. D. Hesperonomiella quebecensis Cooper, new SPeCieS....... 22. cece cece eee eee (13) Impression of the brachial interior, X 1, showing main pallial trunks, para- type, 116849d; (14) another impression of the pedicle interior prepared by burn- ing shell, X 1, holotype, 116849a; (15, 16) respectively X 1 and X 2 enlarge- ments of a plasticine replica of the pedicle interior prepared from the preceding ; (17) impression of the brachial interior prepared by burning the shell, x 1, paratype, 116849b; (18, 19) respectively XI and X 2 views of a plasticine replica of the brachial interior prepared from the preceding mold; (20) exterior of the brachial valve, < 2, paratype, 11684of. Boulder in Mystic conglomerate, Range 6, Lot 21, 2.6 miles north and 4 mile east of Mystic, Stanbridge Township, Quebec, Canada. B. 2 agus planoconverd Bites. ..)6iocc nce Were oe es Oe ere Sa eee ek ED BOOS | (21) Views showing the brachial valve and the pedicle interarea, X 2, lectotype, 71461b; (22) same as preceding, 24, showing pseudodeltidium and chilidium; (23) pedicle exterior, X 2, showing ornamentation, paratype, 7146!a. Odenville formation, 7 miles northeast of Pelham, St. Clair County, Ala. (24) Brachial exterior showing ornamentation of an exceptionally well preserved specimen, 14, hypotype, 91586; (27, 28) respectively * 14 and X 3 views of the interior of the preceding showing notothyrial cavity with a cardinal process, short brachiophores, short median ridge, and granulose interior. Odenville formation, along the railroad east of Odenville, 1,780 feet east of the highway crossing at railroad station in borrow pit, St. Clair County, Ala. (25) Interior of the pedicle valve showing pallial marks, 14, hypotype, 91590a; (26) median region of another pedicle interior, & 14, hypotype, 91590b. Odenville formation, about 8 miles southwest of Leeds, SE1NE+# sec. 10, T. 18 S., R. 1 W., Vandiver (15’) Quadrangle, Ala. (29) Posterior part of the brachial interior showing the cardinalia, < 3, hypotype, 91588a. Odenville formation, on the northwest side of the railroad embankment about 4+ mile northeast of Odenville Station, St. Clair County, Ala. PLATE 173 GLYPTAMBONITES, LIMBIMURINA, MACROCOELIA, PAUCICOSTELLA, PTYCHOGLYPTUS, STROPHOMENA BA OPVEROG PLCS” ULY OUMCTESES NV INAS. Nee WOR Bracalcts cle cia'a'e'sls'd(aie'p ale nls slo's Wa eae ee ee (1-4) Respectively posterior, anterior, pedicle, and brachial views of a complete specimen, X 4, hypotype, 117308d; (5) brachial view of another complete speci- men, X 4, paratype, 117308e; (6) brachial interior showing septal ridges and delicate cardinalia, 5, paratype, 117308f; (7) cardinalia of the preceding specimen enlarged X 6, showing cardinal process and brachiophores. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. 1175 Page 816 337 607 818 1176 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. B. Ptychoglyptus virginiensis( Willanddias. 145) . 5 doogRI ds ogee ies «8 9k, A TOLRUKS. (8), Brachial view of a young specimen showing the concentrated wrinkles and the anterior nonwrinkled region, x 2, hypotype, 117398a; (9) exterior of the pedicle valve showing the same features as the preceding specimen, XX 2, hypotype, 117398b; (10) brachial interior showing cardinalia and septal ridges, X 3, hypotype, 117398c; (11) posterior edge of the preceding brachial valve, x 5, showing cardinalia; (12) enlargement of the posterior end of the preceding specimen, X 10, showing the cardinalia. Horizon and locality same as preceding. C. Glyptambonites glyptus Cooper, new SPECIES... 2... ccc eee eee e cece sence eecseeens (13) Exterior of a small pedicle valve, X 2, paratype, 117387a; (14, 15) interior and exterior of a large pedicle valve, * 3, showing muscle scars, paratype, 117387b; (16) exterior of a pedicle valve showing details of the ornamentation, X 4, paratype, 117387c; (17, 21) exterior and posterior of another pedicle valve showing the variable ornamentation and pseudodeltidium, < 3, paratype, 117387d; (18, 19) interior and posterior of a pedicle valve showing muscle scars and pseudodeltidium, X 5, paratype, 117387e; (20) a young pedicle valve in exterior view, X 4, paratype, 117387f; (22) posterior part of a brachial valve showing septal ridges and cardinalia, * 4, paratype, 117387g; (23) posterior of the pre- ceding specimen enlarged X 8, showing cardinal process. Horizon and locality same as preceding. D. Paucicostella, canadensis; Cooper, mew Species iiss ./ecslo rsd. Gelso a vial diells cual 2% (24) Pedicle exterior, X 3, paratype, 117394b. Table Head series (upper), Table Point Cove, Newfoundland. E. Strophomena crinerensis Cooper, MEW SPeCi€S.......cccceccccccsecccsccencveces (25-29) Respectively posterior, anterior, side, pedicle, and brachial views of a nearly perfect specimen, 1, holotype, 117718; (30) exterior of the pedicle valve X 2, showing details of the ornamentation. Bromide formation (Pooleville member), cobbly, light-colored limestone di- rectly above the green shale band, Spring Creek, N4 sec. 17, T.2 S., R. 1 W., Murray County, Okla. F. Moaerococka-duplisiriata ( Willard) eiicd aiedta. astee aloes Ae an Sarees 4 Se (31) Exterior of a somewhat exfoliated pedicle valve, X 1, hypotype, 117768. Lincolnshire formation (Hogskin member), 0.4 mile northeast of Red Hill, 44 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quad- rangle, Tenn. G. Limbimurina brevilimbata Cooper, new SpeCieS...........cccccccccccseseuecedel (32, 33) Pedicle and side views of a large specimen, < I, paratype, 117661a; (34) pedicle view of the same specimen, X 2, showing the frill and wrinkled ornamentation. Botetourt formation (0 to 10 feet of limestone beneath the Botetourt granu- lar bed), in the field on the south side of the road, 0.2 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. PLATE 174 PTYCHOGLYPTUS A. Piychoglypbtusieirgimensis, Willard yo lipielercteiela 2 dbels-tolelarsis ee & aired eile ate oe Soi (1, 2) Interiors of two brachial valves showing cardinalia and varying degrees of thickening of adductor area, 3, hypotypes, 123285b, 123285e. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. 127 Page 818 713 712 934 803 852 818 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER B. Pijchoglyptisieirginiensis WW lard gaciannieins .teidwens sale. ah aaieiew ea Meee (3, 4) Respectively 1 and X 2 enlargements of an imperfect specimen, hypotype, II1052. Edinburg formation (Cyrtonotella zone), south side tracks, $ mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. C. Ptychoglypius ? matura Cooper, new SPeCi€S. «665.0 sjeaceeccdits ce cceenscesccses (5,6) Respectively X 1 and X 2 enlargements of the holotype, 111061. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. D. Ptychoglyptus pulchrus Butts =P. virginiensis Willard............00seeceeeees (7) Pedicle view, X 3, of the holotype, 71475. Horizon and locality same as preceding. EB. PEyechogl pins, car ginsenstsy WAM ALC «.< .) jeu jaioned.oss= ania Slane: a/ajsyhirh ya iste os mcaisroganers mbacutehd 3 (8, 9) Exterior and interior of a nearly perfect specimen, 3, hypotype, 98231b; (10) brachial interior of an imperfect specimen, < 4, hypotype, 98231a; (11, 16) another pedicle exterior and interior showing the ornamentation and dental plates, X 3, hypotype, 98231b1; (12) another fragmentary brachial interior, x 4, showing the cardinalia, hypotype, 98231a1. Edinburg formation (Liberty Hall facies, base), 1.8 miles S. 4° W. of Bethel Church, 5.9 miles due east of Harrisonburg, Harrisonburg (15’) Quadrangle, Va. (13, 14, 17) Interior of three imperfect brachial valves, < 3, showing the Sower- byella-like cardinalia, hypotypes, 111042b, 111042a, and 111042c; (15) brachial view of a large specimen, X 2, hypotype, 111056. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. PLATE 175 GLYPTAMBONITES A. (Glypiambonites glyptus Cooper, new Species scsics aacaie dena. ses snosscevcecseacns (1) Brachial interior, X 3, showing median septum, and brachiophores, paratype, 117386c; (2) another fragmentary brachial interior, < 3, showing median septum and slender brachiophores, paratype, 117386d; (3) plasticine replica of the pedicle exterior, X 1, paratype, 123250b; (8) same view as preceding, X 2; (4) posterior of the pedicle interior showing the muscle scars and pseudo- deltidium, X 3, paratype, 117386a; (5) exterior of an imperfect pedicle valve, X 3, showing details of the ornamentation, paratype, 117386b; (7) pedicle valve, X 1, holotype, 117383a. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. (6) Exterior of an imperfect specimen seen in brachial view, X 2, paratype, 117385b. Effna formation, McNutt Quarry, 12 miles southwest of Bland, Burkes Garden (15’) Quadrangle, Va. B. Glyptambonites musculosus Cooper, new SPeCi€S.........cceceeccccceucececeeess (9, 10) Respectively X 1 and X 2 views of a pedicle valve, showing the ornamen- tation, paratype, 117391. Oranda formation, along U. S. Highway 11, 14 to 2 miles southwest of Stras- burg, Strasburg (15’) Quadrangle, Va. C. Glyptambonites musculosus Cooper, Mew SPECi€S.. 1.0... cece cece cccceccccacccecs (11) Plasticine replica of the pedicle exterior, <1, holotype, 117390c; (12, 13) respectively 1 and X 2 enlargements of an impression of the pedicle interior 817 818 818 713 715 715 1178 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. showing the muscle scars, pallial impressions, and slots produced by dental plates, holotype, 117390c, counterpart of preceding. Oranda formation, 0.6 mile northwest of Linville Station, Broadway (15’) Quadrangle, Va. PLATE 176 GLYPTAMBONITES, PALAEOSTROPHOMENA A. Glyptambonites musculosus Cooper, Mew SPECIES. 2... 2. elec ese cet eteccnepes (1) Impression of the pedicle interior, 1, the mold from which the plasticine replica on pl. 171, B, fig. 15, was prepared, paratype, 117390a; (2) posterior of the preceding, 2, showing the impression of the muscle area with its long diductor scars; (3) posterior of an incomplete specimen, X 2, showing interareas of both valves, chilidium, simple cardinal process, and pseudodeltidium, para- type, 117388d; (4) impression of part of the posterior of the brachial valve showing genital markings and muscle scars, X 2, paratype, 117388c; (5) plasti- cine replica of the cardinalia of the brachial valve, X 2, prepared from the preceding mold, showing septa, cardinal process, and brachiophores. Oranda formation, 0.6 mile northwest of Linville Station, Broadway (15’) Quadrangle, Va. B. Palaeostrophomena ? rugosa Cooper, New SPECIES.........2ccecesscccceccccsevcs (6, 7) Respectively 1 and 2 enlargements of a brachial valve, paratype, 117379a; (8) exterior of pedicle valve, X 2, holotype, 117379c; (9) brachial view, X 2, paratype, 117379e; (10) fragment of pedicle valve showing muscle area, X 2, paratype, 117379f; (11) impression of the brachial interior, X 3, paratype, 117370g; (12) plasticine replica of the brachial interior, X 3, prepared from the preceding. Botetourt formation, south side of U. S. Highway 60, 1 mile northwest of Lexington, Lexington (15’) Quadrangle, Va. PLATE 177 TITANAMBONITES A. Tirtanambontesianplus (Raymond) 00. BME OEs. CPR A rE (1-5) Respectively posterior, side, anterior, exterior, and interior views of the pedicle valve, < 1, hypotype, 117422; (6, 7) two views of the pedicle interior, one tilted to show the anterior ends of the pallial trunk distributaries, the other tilted to show the delthyrial cavity and the muscle area, X 14, same hypotype; (8) interior of the same hypotype, X 2, showing the pallial marks. Arline formation (near top), south side of wagon road in glade, + mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. (9, 10) Respectively X I and X 2 enlargements of a brachial interior showing the pallial trunks and adductor field, hypotype, 117418. Arline formation, } mile south of McMullens, Meadow (T.V.A. -139-NW) Quadrangle, Tenn. Bee LatanammbDonvtes. SPs Wise ois ois e's vie-0.010 Slolss(aeie e,c.0 aie ore < NA RN clean a eee ae (11) Exterior of a large brachial valve, X 1, figured specimen, 117432. “Lenoir” formation = Little Oak (20 feet under the Pratt Ferry formation), 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. PLATE 178 TITANAMBONITES A. Titanambonites convexus Cooper, Mew SPeCi€S...... 00.2 cece cece eee e tee eceeens (1-4) Respectively posterior, pedicle, brachial, and side views of a nearly complete 127 Page 715 705 718 723 719 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1179 Page specimen, XI, holotype, 117424e; (5) enlargement of the pseudodeltidium, chilidium plates, and cardinal process, 2, of the preceding; (6) pedicle view of another specimen, I, paratype, 117424d; (7, 8) respectively X 1 and X 2 en- largements of the interior showing pallial marks and muscle region, paratype, 117424b. Little Oak formation, intersection of Bailey Gap and main road, SW4iSW} sec. 13, T. 19 S., R. 2 W., 13 miles northeast of Newhope Church, Cahaba Valley, Vandiver (15’) Quadrangle, Ala. Bs Ditanomuogniies meas Cooper, NeW, SPECIES 54 ja ciacnaiss on acon 2 4 ljeppiedininele se oye abt no 721 (9) Brachial view of a complete specimen, X I, paratype, 117429b; (10) enlarge- ment of the exterior surface, * 2, of the preceding specimen; (11) brachial view of another full-grown specimen, X I, paratype, I117429c; (14, 15) respectively x1 and X 2 enlargements of an impression of the pedicle interior prepared by dissolving the shell away from the matrix to show the pallial and muscle marks, paratype, 117420f; (16, 17) respectively 1 and 2 enlargements of the brachial internal impression prepared by dissolving the shell from the matrix to show the pallial marks and muscle scars, paratype, 117429g; (18) plasticine replica of the brachial interior, X 2, prepared from the preceding impression, showing the septa, pallial marks, and cardinalia; (21) posterior view of cardi- nalia, X 2, paratype, 1174209d. Athens formation (base), east side of the road 1.9 miles northeast of Chris- tiansburg, Sweetwater (T.V.A. 131-SW) Quadrangle, Tenn. (12, 13) Brachial and side views of a nearly perfect specimen, X 1, holotype, 117426b; (19, 20) respectively X 1 and X 2 enlargements of the brachial inte- rior showing septa, pallial marks, and cardinalia, paratype, 117426a. Athens formation (base), Craighead Creek, + mile north of Christiansburg, Sweetwater (T.V.A. 131-SW) Quadrangle, Tenn. PLATE 170 SOWERBYITES, TITANAMBONITES AL Ditanembouties aseplus (Raymond )iijs ass clesjorasat oe kan es + elon nile ote a/c ainlnrs oes 718 (1-5) Respectively anterior, brachial, side, pedicle, and posterior views of a com- plete specimen, X I, hypotype, 117421; (6) brachial view of part of the preced- ing specimen, X 2, showing beak region of both valves and ornamentation. “Lenoir” formation = Little Oak ?, east of Leeds, Leeds (15’) Quadrangle, Ala. B. Sowerbyties delicatus Cooper, new SpeCieS.......cncccc scence ecnencaopcccescces 725 (7-11) Respectively brachial, posterior, pedicle, anterior, and side views, X 2, of the holotype, 117399e; (12) brachial view, X 1, of the holotype; (13) brachial view of another complete specimen, XX 2, paratype, 117399d; (14) pedicle inte- rior, X 2, showing callosities at anterior end of diductor scars, paratype, 117399c; (15) another pedicle interior, X 3, showing muscle area, anterior callosities, and adductor pit, paratype, 117399g; (16) pedicle interior showing teeth, pseudo- deltidium, and muscle area, X 3, paratype, 117399a; (17) brachial interior show- ing median ridge, X 3, paratype, 117399h; (18) another brachial interior, x 4, showing cardinalia, septa, and pallial markings exceptionally well developed, paratype, 117399f; (19, 20) another brachial interior and posterior view of same showing cardinalia and pallial marks, X< 4, paratype, 117399b. Sevier formation, 1.8 miles S. 18° E. of Athens, Athens (T.V.A. 125-NE) Quadrangle, Tenn. 1180 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. PLATE 180 SOWERBYITES, TITANAMBONITES AL SOmeRi antes rep latme CIV GUATO cin Le ataceesle.« nosiaisietdis ash Rua cas ties nie eee (1-3, 5) Respectively posterior, pedicle, anterior, and side views, 1, of the hypo- type, 117409a; (4, 8) respectively X 1 and X 2 views of another complete speci- men, hypotype, 117409b; (9) enlargement, X 3, of the exterior surface of the preceding; (6) pedicle view of the same hypotype, X 2, showing thin, crowded lamellae; (7) brachial view of another complete specimen, X 2, stripped of the lamellae, hypotype, 117409c; (11) brachial interior, showing cardinalia and septum, X 2, hypotype, 117409e. Lincolnshire formation (Hogskin member), Sally Cleveland Farm, 2 mile southwest of Washburn, Dutch Valley (T.V.A. 154-SE) Quadrangle, Tenn. (10) Pedicle interior showing the muscle area with the thick callosities at the anterior end of the diductor scars, 2, hypotype, 117411b. Lincolnshire formation (Hogskin member), Clinchport, Clinchport (T.V.A. 188-NW) Quadrangle, Va. (12) Specimen from which part of the pedicle valve has been removed to show the brachial ridges, X 2, hypotype, 117410a. Lincolnshire formation (Hogskin member), 0.4 mile east-northeast of Red Hill, 44 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quad- rangle, Tenn. (13) Another brachial interior showing the strong median ridge and the faint lateral ones, X 2, hypotype, 117412b. Lincolnshire formation (Hogskin member), on the south side of the first bridge on U. S. Highway 25E north of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. B: Jstanambontes amplus” (Raymond) 5. (oa oe eee ede cre ee eee (14, 15) Brachial and pedicle views of an imperfect specimen, 1, hypotype, 117420a; (16) pedicle view of the preceding, < 14, showing the median ridge exposed through a hole in the pedicle valve. Little Oak formation, point of ridge, 1 mile southwest of Newhope Church, Vandiver (15’) Quadrangle, Ala. C. Sowerbyties, lamellosus, Cooper... EW, SPECIES so sScielamiesrls 1, showing unusual development of septa, hypotype, 117415a; (26) posterior view of preceding, X 3, showing cardinal process; (25) brachial interior, X 3, show- ing septa, brachiophores, and cardinal process. Lincolnshire formation (90 to 120 feet above the ‘“Mosheim”), along U. S. Highway 25E, 1 mile north of Indian Creek, Evans Ferry section, Howard Quarter (T.V.A. 162-NW) Quadrangle, Tenn. PLATE 183 SOWERBYITES A. Sowerbyites gildersleevei Cooper, new SPeCi€S..........0eee ee eeeeesseterecesees 725 (1, 2) Brachial and pedicle views, 1, of the holotype, 117401z; (3) brachial view, X 2, of the holotype; (4) exterior of a pedicle valve, 1, paratype, I17401Ip; (5, 6) respectively I and X 2 views of the brachial exterior, para- type, 117401d; (7) muscle area of the pedicle interior, X 2, paratype, 11740Iv; (8) pedicle interior, < 2, showing callosities anterior to diductor scars and pallial marks anterior to the callosities, paratype, 117401h; (9) another pedicle interior showing pallial marks, < 2, 117401Ie; (10) same as preceding, 1; (II) brachial interior, X 3, showing median septa and genital markings, paratype, 117401q; (13) another brachial interior, & 2, showing genital markings, para- type, 117401k; (12) posterior of a brachial valve, 3, showing cardinalia, paratype, 117401b; (14) posterior of another brachial interior showing septa and cardinalia, X 2, paratype, 117401m; (15) posterior view of the preceding, X< 3, showing cardinal process and chilidial plates; (16) brachial interior showing pallial marks, * 1, paratype, 117401n. Lincolnshire formation (8 feet below the Cybelotdes bed), north side of road along Tumbling Run, 14 miles southwest of Strasburg, Strasburg (15’) Quad- rangle, Va. Bi | SQGEAD UALS TEPSSEPIGIUS JOVN ULAEG) + « sresohlce ce sls caus alata © ciaclh, oc aecio ier etek cterale tenmuahe Sipe 730 (17) Brachial view of a complete specimen, X 2, hypotype, 123252b; (18) exterior of a pedicle valve showing wrinkles along the posterior margin, X 1, hypotype, 123252a. Lincolnshire formation, 0.2 mile southwest of Shiloh Church, near center of northwest subquad., Pressmens Home (T.V.A. 171-NE) Quadrangle, Tenn. PLATE 184 BrmuriA, EopLecToDONTA, [SOPHRAGMA, PALAEOSTROPHOMENA, SOWERBYITES, TITANAMBONITES A. Eopigaiadonia .altermatas) (Burts) ec. sistisccne. cicpteg uate) « rs weyeeter eumelanin ais, atataele e's 808 (1, 2) Brachial and side views, X 2, of a hypotype, 117549a; (3) brachial view, x 1, of the hypotype. For additional views see pl. 207, B, figs. 2-25. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Dark shale under Eureka quartzite, 4.2 miles north-northeast of Martin Ranch, Roberts Mountains (1°) Quadrangle, Nev. B: Buniria. parma Caper; NewSpecies .!. 5 9506 Se. SOT PEST CL (4) Exterior of a small pedicle valve, & 2, paratype, 123253a. Edinburg formation (Cyrtonotella zone), south side of road 0.2 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. C. Binunaisuperba Wich aud Cooper vi teeaian eos aots a Ion seksi. P58 y A (5) Pedicle exterior, X 1, hypotype, 11472a. Botetourt formation, north side of Virginia Highway 114, 2.3 miles west of the Montgomery-Roanoke County line, 12 miles northeast of Blacksburg, Va. D. Titanambonites praecursor Cooper, new SPECIES. ......62 22 cc cecec ccc ceeceeeeees (6-9) Respectively posterior, anterior, pedicle, and brachial views of a damaged but complete specimen, X< 1, holotype, 117431a; (10, 11) respectively 1 and X 14 views of brachial valve showing cardinalia and pallial marks, paratype, 117431b; (12) incomplete pedicle interior, 1, showing long diductor scars, paratype, 11743Ic. Lenoir formation (lower part of the Billingsaria zone), south side of road in section 1 mile northeast of Friendsville, east edge of Concord (T.V.A. 138-SW) and adjacent Louisville (T.V.A. 138-SE) Quadrangles, Tenn. E. Palaeostrophomena superba Cooper, new SPeCieS......... cece cece eceeecseeeeees (13) Brachial view of a complete specimen, <1, paratype, 117381a; (14-16) posterior, anterior, and side views, X 2, of the preceding specimen; (17) pedicle exterior, X 2, showing the ornamentation, paratype, 117381c; (18) pedicle inte- rior, X 2, showing muscle and pallial marks, paratype, 117381b. Arline formation (lower), 100 yards southwest of the Negro Cemetery, 4 mile northeast of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. BP. Isaphragms exiensum Cooper, new SPeCleS.c..°- << sj 10+ seis aas0.00 os aes ecime css on (19-22) Respectively posterior, anterior, side, and pedicle views of a complete specimen, 2, paratype, 117375. For brachial view see pl. 170, C, fig. 17. Little Oak formation, junction of Bailey Gap road and main Cahaba Valley road, 13 miles northeast of Newhope Church, SW1SW4# sec. 13, T. 19 S., R. 2 W., Vandiver (15’) Quadrangle, Ala. G. Sowerbyites lamellosus Cooper, new SPeCi€S» oi ss.e aulelaln alicia ciel (30-34) Respectively anterior, side, posterior, pedicle, and brachial views of a young specimen, X 2, paratype, 117508c; (39) brachial view, X 3, of preceding; (38) pedicle view of a full-grown specimen, X 2, paratype, 117508e; (40) bra- chial view of an imperfect specimen showing the ornamentation, X 3, paratype, 117508g; (41) exterior of a large brachial valve, X 2, paratype, 117508f; (42) interior of an imperfect pedicle valve showing muscle area, X 2, paratype, 117508d; (43) interior of an imperfect brachial valve, X 4, paratype, 1175081; (44) another imperfect brachial interior showing the cardinalia, X 3, paratype, 117508b. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. (35-37) Anterior, brachial, and pedicle views of a well-preserved specimen, X 2, holotype, 117509a. Chatham Hill formation, Grayson Farm, 4 miles southwest of Bland, Bland County, Va. Gy Somer Dye bee Tye. Bye uses co bse.9sece un oven aban bape bag ose sum srysinueneteve ne wpe ini Re eag ie hea oN eee (45) Brachial view, <1, of the figured specimen, 117546; (46-50) respectively brachial, anterior, posterior, side, and pedicle views, 2, of the preceding specimen. Lower part dark shale under Eureka quartzite, north-facing nose of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. i: “Semerbyelian. compacta “Cooper, DEW SPECIES: .joi0 210/56 asa alse oe oininle =e pivinwe o/elpctera’s @ (51-54, 56) Respectively brachial, pedicle, anterior, posterior, and side views of a complete specimen, X 2, paratype, 117484a; (55, 59) pedicle and brachial views of another complete specimen, X 2, paratype, 117484b; (57, 58) interiors of two brachial valves showing cardinalia and septa, < 3, paratypes, 117484d, 11748 4c. Benbolt formation, 0.9 mile northeast of Heiskell, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. PLATE 197 SOWERBYELLA A. Sowerxbyella: negratius. CW ilar.) yoo o's wis, ajetessinicad Feajnysioliit> “inl gi eneynyarel «Simi wih la helms oh eae (1, 2) Pedicle and brachial views of a specimen showing the ornamentation, X 2, hypotype, 117504a; (3) pedicle view of another specimen, X 2, hypotype, 117504c. 127 Page 794 793 790 803 778 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER Botetourt formation, junction Virginia Highways 311 and 114, 4 mile south- west of Catawba, Salem (15’) Quadrangle, Va. (4-8) Respectively anterior, posterior, pedicle, side, and brachial views of a com- plete specimen, X 2, hypotype, 117505d. Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. (9) Plasticine replica of the brachial exterior, X 2, hypotype, 117506b; (10) exte- rior of the pedicle valve, < 2, hypotype, 117506a. Horizon and locality same as preceding. B. Sowerbyella compacta Cooper, new SPECIES... 2.505. cs ese c ce cececeetsccceeccsen (11-14, 23) Respectively pedicle, side, posterior, anterior, and brachial views of a complete specimen, 2, paratype, 117485a; (21, 22) pedicle and brachial views of another complete specimen, 2, paratype, 117485b. Benbolt formation (lower), road corner 4 mile southwest of Fleanor Mill, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. (15, 17-20) Respectively posterior, pedicle, anterior, side, and brachial views of a complete specimen, X 2, paratype, 117486c; (16) brachial view of another speci- men, X 2, paratype, 117486a; (24) interior of the brachial valve showing car- dinalia and septa, X 2, paratype, 117486b. Benbolt formation, 0.3 mile north-northwest of Memorial School, Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. Cy Sowerbyella cequistesata \(Wallandy) «ts aic% »)xwispasdnoot0E 203 Ue ONES Rela Se dee (25, 26) Respectively 1 and X 2 enlargements of a complete specimen, some- what narrower than usual, hypotype, 117478a; (27-31) respectively pedicle, side, anterior, posterior, and brachial views of a complete specimen, X 2, hypotype, 117478f; (32, 33) respectively 1 and X 2 enlargements of a well-formed indi- vidual showing somewhat alate cardinal extremities, hypotype, 117478g; (34) brachial interior, X 2, showing cardinalia and septa, hypotype, 117478b. Wardell formation, bend of the railroad just west of Liberty Hill, Dutch Valley (T.V.A. 154-SE) Quadrangle, Tenn. D. Sowerbyella variabilis: Cooper, newospeciesis . cd eves od... swiaetiee elodoatl. sn (35, 36) Respectively < 1 and X 2 enlargements of a complete specimen, paratype, 117539b; (43) ornamentation of the preceding specimen, 5; (37) brachial view of a complete specimen, X I, paratype, 117539a; (38-42) respectively ante- rior, posterior, brachial, side, and pedicle views, < 2, of the preceding specimen. Bromide formation (Pooleville member—168 feet below massive limestone, Oxoplecia gouldi zone), Spring Creek, sec. 7, T. 2 S., R. 1 W., Murray County, Okla. PLATE 108 SOWERBYELLA A. Sowerbyella vulgaita' Cooper, riew' species S222 PSS OA ESS RY, I et (1, 2) Respectively 1 and X 2 enlargements of a complete specimen, paratype, 117543b; (3-6) respectively anterior, posterior, pedicle and side views of another complete specimen, X 2, holotype, 117543a; (11) pedicle view, 1, of the holotype; (12-14) posterior, anterior, and brachial views of a complete specimen, X 2, paratype, 117543f; (19) pedicle interior, < 2, showing median ridge and diductor tracks, paratype, 117543d; (20) brachial interior showing cardinalia and septa, X 2, paratype, I17543c. Bromide formation (Mountain Lake member), cut on Oklahoma Highway 18, 1.8 miles south of Sulphur, sec. 11, T. 1 S., R. 3 E., Murray County, Okla. (7-9, 15, 16) Respectively brachial, posterior, anterior, side, and pedicle views of a 1195 Page 778 775 798 Sor 1196 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. complete specimen, X 2, paratype, 117540a; (10) brachial view, X 1, of the pre- ceding; (17) pedicle interior, X 3, showing the pallial marks, paratype, 117540b; (18) brachial interior, < 3, showing cardinalia, paratype, 117540d; (21, 22) brachial and pedicle views of a small specimen showing variation in ornamenta- tion, X 2, paratype, I17540c. Bromide formation (Mountain Lake member), Spring Creek, sec. 17, T. 2 S., R. 1 W., Murray County, Okla. B. Sowerbyella socialis Cooper, news Species 22 eet) a... Oe LEY Bee POR IO. HOEY (23) Brachial view of a complete specimen, X 1, holotype, 117525a; (24-27) re- spectively brachial, posterior, anterior, and side views, X 2, of the preceding specimen; (28) well-preserved specimen showing brachial view, X< 1, paratype, 98207b; (20, 30) same as preceding, X 2, brachial and pedicle views; (43) brachial interior, <3, showing cardinalia and thickened anterior, paraytpe, 117525b; (31-35) respectively pedicle, brachial, side, anterior, and posterior views of a complete specimen, XX 2, paratype, 117523a; (41) pedicle interior, X 3, showing muscles and pallial marks, paratype, 117527a; (44) brachial inte- rior, X 3, showing cardinalia, paratype, 117527c. Wardell formation, Lloyd Carter’s barn, 0.8 mile by road northeast of the school at Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. (36, 38) Brachial and anterior views of a complete specimen, X 2, paratype, 117530b; (37, 39) side and brachial views of a specimen with more rectangular outline, X 2, paratype, 117530a. Wardell formation (Sowerbyella bed), Evans Ferry section, 0.8 mile north of Indian Creek, on U. S. Highway 25E, Howard Quarter (T.V.A. 162-NW) Quadrangle, Tenn. (40) Interior of the pedicle valve, X 2, showing exceptional development of the pallial markings, paratype, 117522. Wardell part of Dryden formation, north side of Lone Mountain Creek, just west of the road to Straight Creek, 0.8 mile west of Lone Mountain Station, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. (42) Pedicle interior, X 3, showing muscle scars and pallial marks extending anteriorly from the diductor ends, paratype, 117524a. Wardell formation, 1 mile north-northeast of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. PLATE 199 SOWERBYELLA Aw Sowerbyella /moniliferal: Cooper New USPeCIES pape <-oreve'sx01 sreyehaiessieisieietolela’sleisfelc cislele alolels (1) Brachial view of a complete specimen, X 1, paratype, 117499a; (2-6) respec- tively anterior, posterior, brachial, side, and pedicle views, X 2, of the same specimen; (7) brachial interior showing cardinalia and septa, X 2, paratype, 117499b; (8) ornamentation of the brachial valve, < 5, holotype. Decorah formation (upper Ion member), cut on Highway 10, + mile west of Ellsworth, Lancaster (30’) Quadrangle, Wis. B. Sowerbyella aequicostellata Cooper;| new Species slic. 20s esis wi) oi ctelen dale ls Coal le bsie (9, 12) Respectively * 1 and X 2 enlargements of a complete specimen, holotype, 117477{; (11) side view, X 2, of the preceding specimen; (10) anterior view of a complete specimen, 2 paratype, 117477g¢; (13, 14) pedicle views, x 2, of two paratypes, 117477b, 117477a; (16) impression of the pedicle interior showing muscle scars, X 2, paratype, 117477e; (17) brachial interior, 3, showing cardinalia, muscle area, and subdued septa, paratype, 117477d. 127 Page 794 785 774 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Edinburg formation (Cyrtonotella zone), ravine at switch % mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. (15) Interior of the pedicle valve, < 2, paratype, 117476a. Shippensburg formation (about 50 feet above the base of the Pinesburg mem- ber), railroad cut and field to the north, 24 miles southwest of Marion, Cham- bersburg (15’) Quadrangle, Pa. C. Sowerbyellanasuia Cooper: mew species 023i. Lec ar Qs olen es 2k BROW DS (18, 23) Brachial and pedicle views of a complete specimen, X 2, paratype, 117503a; (19-21) side, posterior, and anterior views of a complete specimen, X 2, the holotype, 117503b; (26, 27) pedicle and brachial views of the holotype, X 3, showing interareas and pseudodeltidium; (22) pedicle exterior showing narrow median fold, X 2, paratype, 117503e; (24) brachial exterior, X 2, para- type, 117503g; (28, 29) respectively X 2 and X 3 enlargements of the pedicle interior showing the pallial trunks, paratype, 117503c; (30) another pedicle interior showing muscle and pallial marks, < 3, paratype, 117503f; (31) brachial interior, X 3, showing cardinalia and brachiophores, paratype, 1175034; (33) brachial interior, X 2, paratype, 117503h. Chatham Hill formation, north slope of Walker Mountain, 2 miles south-south- west of Chatham Hill, Chatham Hill (T.V.A. 218-NE) Quadrangle, Va. (25) Pedicle view of a complete specimen, < 3, paratype, 117502a; (32, 34) inte- rior views of two brachial valves, < 3, paratypes, 117502b, 117502c. Ward Cove formation (Nidulites bed), southwest of Tazewell in Thompson Valley, Pounding Mill (15) Quadrangle, Va. PLATE 200 SOWERBYELLA A. Somervyclia compacta Cooper, ‘NeW. SPECIES «al. eas a5 saigitie aieisieldd bs doves winsewee i ale aise (1-5) Respectively posterior, anterior, brachial, side, and pedicle views, X 2, of the holotype, 117487a; (6) brachial interior showing cardinalia, X< 2, paratype, 117487b. Benbolt formation, I mile west of Rye Cove, second cut west of McDavid’s house, Clinchport (T.V.A. 188-NW) Quadrangle, Va. B. Sowerbyella socialis crassa Cooper, new SUDSPECIES...........cceccecccccccccccs (7) Brachial view of a complete specimen, X 1, holotype, 117528a; (8-12) respec- tively brachial, pedicle, anterior, posterior, and side views, x 2, of the holotype; (14) enlargement X 6, of the exterior of the holotype. Wardell formation, Lloyd Carter’s barn, 0.8 mile by road northeast of Rye Cove School, Clinchport (T.V.A. 188-NW) Quadrangle, Va. (13) Pedicle interior, showing pallial marks, x 3, paratype, 117520b. Wardell formation, on U. S. Highway 25E, 50 yards north of the intersection at Thorn Hill, Avondale (T.V.A. 162-NW) Quadrangle, Tenn. Ch Sewerbyelle subcarunaie: CUIGH) ad oeaka Gad ae B55 Adar s Emiebamiels teers agile cae + (15, 16) Brachial interiors, X 2, hypotypes, 117543a, 117543b; (17) pedicle exte- rior showing carina and wrinkles along the posterior margin, X 2, hypotype, 117543c; (18) slab showing numerous individuals, < 2, hypotype, 117543d. Carters formation (O-oplecia bed), quarry 0.3 mile north of Gate City, Leeds (15’) Quadrangle, Ala. PLATE 201 SOWERBYELLA A. Sowerbyellatturdsvillensis:)( Roerste ) 26 } VeSne ty. PR Oe. RP es (1-3) Pedicle, brachial, and side views, 1, of a hypotype, 11749I1c; (4-7) re- 1197 Page 787 778 796 797 780 1198 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. spectively brachial, posterior, anterior, and side views, X 2, of the same hypo- type; (8) brachial view of a complete specimen, 2, hypotype, 1174911; (9) brachial view of an obese individual, 2, hypotype, 117491b; (10) interior of the pedicle valve showing the long diductor scars, & 2, hypotype, I17491g; (11) brachial interior, X 2, showing cardinalia and muscle scars, hypotype, 117401e; (12, 13) respectively X 2 and X3 views of a very perfect brachial interior showing the cardinalia and pallial marks, hypotype, 11749th. Martinsburg formation (base), on Tennessee Highway 33, about 4 mile south of Rose Hill and 54 miles northeast of Maynardville, Maynardville (T.V.A. Quadrangle, Tenn. B. Somerbyella lebaronensts! Bassler’ :: gic diets liedite taxi. asa eee sabe ala. (14-18) Respectively brachial, anterior, pedicle, side and posterior views of a com- plete specimen, X 2, hypotype, 117494a; (23, 24) brachial interiors showing cardinalia, muscle marks, and anterior thickening, <2, hypotypes, 117494b, 117494¢. Lebanon formation, cut on U. S. Highway 41, 2.1 miles north of the Bedford County line in Rutherford County, Tenn. (19) Exterior of the pedicle valve, X 2, lectotype, 80487a; (22) brachial interior of a young specimen, X 2, paratype, 80487b; (25) small slab showing two brachial interiors, X 3, showing cardinal process and septa, hypotype, 117495a. Lebanon formation, Shelbyville, Bedford County, Tenn. (20) Brachial exterior of a specimen having prominent wrinkles on the posterior margin, X 2, hypotype, 117497Cc. Lebanon formation, near Prospect, Giles County, Tenn. (21) Interior of the pedicle valve showing median ridge and muscle area, X 2, hypotype, 117496a. Lebanon formation, Columbia, Maury County, Tenn. PLATE 202 SOWERBYELLA A. Sowerbyella*compacta’ Cooper’ new ‘Species. os evs. tees cis ccce snes access ces (1) Pedicle view of a complete specimen, I, paratype, 117490; (2-6) respec- tively brachial, pedicle, anterior, side, and posterior views, 2, of the same specimen. Benbolt formation (basal 20 feet with Echinosphaerites), + mile east of Speers Ferry, Clinchport (T.V.A. 188-NW) Quadrangle, Va. (7) Interior of the pedicle valve, X 2, showing pallial marks, paratype, 117483b; (8) brachial interior showing cardinalia, X 2, paratype, 117483c. Dryden formation, Lone Mountain, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. B., Sowerbyella porvayCooper) Sew Species. fais Sane ela ws we. ee else eke tetas (9, 11) Side and brachial views of a complete specimen, X 2, paratype, 117507b; (10, 12, 13) brachial, posterior, and anterior views of a complete specimen, X 2, holotype, 117507a; (14) interior of the pedicle valve, * 3, paratype, I117507c; (15) interior of the brachial valve, X 3, showing septa and cardinalia, paratype, 117507d. Ward Cove formation, small cemetery about % mile north of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Tenn. Ge Sowerby ellaizulgatay Cooper enews: SPECIES 4 cemvectete sphincter ea eet inate ticisy: (16-20) Respectively brachial, anterior, side, posterior, and pedicle views of a com- plete specimen, X 2, paratype, 117542a; (22) ornamentation of brachial valve, <6, of preceding specimen; (21) brachial interior showing cardinalia and 127, Page 782 778 789 801 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER septa, X 2, paratype, 117542b; (23) pedicle interior showing Y-shaped ridge and muscles, X 2, paratype, 117542e. Bromide formation (Mountain Lake member), } mile west of U. S. High- way 77; SW} sec. 25, T. 2 S., R. 1 E., Carter County, Okla. D. Sowerbyella indistincta Cooper, new Speciesars ici dees ae ceecisia’e cle alesse cleswnsee (24) Pedicle interior, X 2, paratype, 117493b; (25) pedicle exterior, X 2, holo- type, 117493a; (20) slab showing interiors of three pedicle valves and a brachial exterior, X 2, paratype, 117403Cc. Bromide formation (Mountain Lake member), about the middle of sec. 33, T.2S., R. 2 E., about 2 miles northeast of Springer, Carter County, Okla. E. Somerbyella wariabslis | Goaper, new, SPeCleSincels ss, « «jatanaiare-a os ado Gaia 6 ateiel> (27) Brachial view of a small specimen showing aberrant fasciculation of costellae, X I, paratype, 117538a; (28, 29) brachial and pedicle views, X 2, of the preced- ing specimen; (30) brachial view of the same specimen, 4, showing the bun- dling of costellae; (31, 32) pedicle and brachial views of a specimen preserving the attenuate cardinal extremities, < 2, paratype, 117536a; (33) brachial view of a complete specimen, X 1, holotype, 117536b; (34-38) respectively anterior, posterior, pedicle, side, and brachial views, X 2, of the holotype. Bromide formation (Pooleville member—O-roplecia gouldi zone), Rock Cross- ing of Hickory Creek, about center sec. 35, T. 5 S., R. 1 E., Criner Hills, Carter County, Okla. (39, 40) Two brachial interiors, X 2, showing cardinalia and septa, paratypes, 117535b and 117535c. Bromide formation (Pooleville member—370 to 390 feet above base), creek bed just west of U. S. Highway 77, north of culvert near store, SEJNE4 sec. 25, T.258., R.1 E., Carter County, Okla. PLATE 203 EOPLECTODONTA, SOWERBYELLA A. Sowerbyella plicatifera Cooper, new Species... 0.060. cee cece chee decenece's (1) Brachial view of a complete specimen showing the folds which inspired the specific name, X I, paratype, 117512a; (2, 3) pedicle and brachial views, X 2, of the preceding specimen; (7) brachial view of a complete specimen, X 1, holotype, 117512b; (8-11) respectively brachial, posterior, anterior, and side views, X 2, of the preceding specimen; (12) brachial view of another complete specimen, X I, paratype, I1175I11a; (4-6, 13, 14) respectively posterior, anterior, side, brachial, and pedicle views, < 2, of the preceding specimen; (15) enlarge- ment of the ornamentation of the brachial valve, < 6, of the preceding specimen. Bromide formation (Mountain Lake member), Decker’s section, zone 3, at Nebo, Murray County, Okla. B. Eoetigetadenta: 2 inradhata( Butts Jou tesineeee .Siaew. ale. Uae aleve: (16-18) Two pedicle views and side view of a partially exfoliated specimen, 2, hypotype, 123257a; (19) immature specimen not yet geniculated, x 2, holotype, 97582b; (20) somewhat larger specimen than the preceding but not geniculated to the extent shown by specimen figured in 16-18, X 2, paratype, 97582a. Oranda formation, 4 mile west of Strasburg, along railroad tracks, Stras- burg (15’) Quadrangle, Va. C. Sowerbyeliavcana: Cooper, new yspeciess peso Weak elinns i asieeeseeediedeetasld.. (21-24) Respectively posterior, pedicle, brachial, and side views of a nearly per- fect specimen, X 3, paratype, 117480a; (25, 26) pedicle and anterior views of a well-preserved pedicle valve, < 2, paratype, 123258a; (27) brachial view of 1199 Page 798 791 812 777 I200 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page a large complete specimen, X 2, paratype, 123258b; (28-30) anterior, posterior, and exterior views of a large pedicle valve, 2, paratype, 123258c. Oranda formation, on Virginia County Road 777, just west of the junction of Virginia County Roads 617 = 910 and 777, $+ mile north-northwest of Green Mount Church, Broadway (15’) Quadrangle, Va. D: Sewerbyetia cave Cooper, Tew Species: 222. pecs etree ee ee ere eee c cen ete 777 (31-35) Respectively brachial, posterior, anterior, pedicle, and side views of a complete specimen, 2, paratype, 117481e; (36) brachial view of a complete specimen, 1, holotype, 117481b; (40-42) anterior, posterior, and brachial views, X 2, of the holotype; (37-39) brachial, pedicle, and side views of a com- plete, full-grown specimen, X 2, paratype, 117481a; (43) interior of the brachial valve showing septa, muscle scars, and cardinalia, X 3, paratype, 11748rf. Martinsburg formation (part with Brongniartella and referable to Salona formation), 0.15 mile north of Green Mount Church on Virginia County High- way 617 = 0910, Broadway (15’) Quadrangle, Va. PLATE 204 SOWERBYELLA A. Sowerbyella medtoplicata Cooper, New SPECIES.... 0... ccccenccncccccrscveccverce 784 (1-5) Respectively posterior, anterior, side, brachial, and pedicle views of a com- plete specimen, 2, holotype, 117408. Lincolnshire formation (top), Tumbling Run, 14 miles southwest of Stras- burg, Strasburg (15’) Quadrangle, Va. Bi. SGRERD GCI VS prQUit, LMR ON ORE BRE Mec 5 MEM a 0 ida pied winie ote alata dle: wee ives 802 (6, 12) Respectively 1 and X 2 enlargements of the brachial side of a complete specimen, figured specimen, 117545b; (7-11) respectively side, posterior, ante- rior, brachial, and pedicle views of a large, complete specimen, X 2, figured specimen, I17545a. Rodman member of Nealmont formation, 1 mile northeast of Bellefonte, Belle- fonte (15’) Quadrangle, Pa. C. Sowerbyella eximia Cooper, new SPeCieS..........ccccce eed vctevecceecccscscccs 781 (13) Brachial view of a complete specimen with rounded cardinal extremities, xX I, paratype, 117492c; (14-18) respectively anterior, posterior, side, brachial, and pedicle views, X 2, of the preceding specimen; (19) another adult specimen, brachial view, X I, paratype, 117492j; (20) brachial view of a specimen showing wrinkles on the hinge margin, 2, paratype, 117492k; (21, 22) pedicle and brachial view of a large specimen, XX 2, holotype, 117492a; (29) posterior of the preceding specimen, X 2, showing the interareas and cardinal process; (23-27) respectively brachial, side, pedicle, posterior, and anterior views of a large speci- men, X 2, paratype, 117492d; (28) brachial view of a medium-sized specimen showing the ornamentation, 2, paratype, 117492h; (30, 31) respectively I and X 2 enlargements of a brachial interior, showing the cardinalia, paratype, 117492p; (32) another brachial interior of a specimen somewhat narrower than the preceding, 2, paratype, 117492f; (33) interior of a large brachial valve showing papillose interior, septa, and cardinalia, 3, paratype, 117492n. Martinsburg formation (part with Brongniartella and referable to the Salona formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER PLATE 205 SOWERBYELLA A. Sowerbyella ‘sartalss. Cooper, Mew, “SPECi@S . ntoietdi y= ap eka s ae.e che a. keh ik 6! « SII (1) Immature pedicle valve, X 2, showing wrinkles along the posterior margin, paratype, 110992d; (2, 3) respectively XI and XX 2 enlargements of a pedicle valve, holotype, 110992a. Wells formation, along the railroad 14 miles southwest of Cumberland City, Stewart County, Tenn. iB. Sowerbyttes wiseplarus: CWillatd)’. «ocr cicis sie sis s elulate e's felt see Gievs ss eemapebanae eniot tas 730 (4, 5) Respectively X 1 and X 2 enlargements of the pedicle interior showing the callosities at the anterior ends of the diductor scars, hypotype, 117413a; (6, 7) respectively <2 and 1 enlargements of the brachial interior, showing the median septum, hypotype, 117413b. Lincolnshire formation (Hogskin member), along U. S. Highway 25F, north of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. C. Eoplectodonta .?:-dubta Cooper) new species... in .)5. fle G0 0s Le Ao aisteece oad Js 810 (8) Impression of the pedicle interior, 2, paratype, 117555b; (9) impression of the brachial interior, X 2, paratype, 117555{; (10) plasticine replica of the brachial interior, X 2, prepared from the preceding; (11) another plasticine replica of the brachial interior, X 2, showing septa, paratype, 117555g¢; (12) plasticine replica of the pedicle exterior, X 2, holotype, 117555d; (13) plasticine replica of the brachial exterior of a small specimen, X 2, paratype, 117555h. Botetourt formation, junction Virginia Highways 731 and 724, 2 miles north- west of Brownsburg, Lexington (15’) Quadrangle, Va. I204 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 D. Goniotrema perplexum Ulrich and Cooper...........-ceccceccecccsccccseencnes 711 (14, 16) Interior and exterior of the pedicle valve, 1, of the holotype, 92872; (15, 17) exterior and interior of the brachial valve, 1, of the holotype; (18) posterior view of the brachial valve of the holotype, X 2, showing cardinalia; (19) brachial valve of the holotype, 2, interior; (20) pedicle interior of the holotype, X 2, showing the elongate diductor scars; (21, 22) respectively XI and X 2 views of the apex of the holotype showing pedicle foramen. Upper Pogonip group, Ikes Canyon, east side of Toquima Range, Roberts Mountains (1°) Quadrangle, Nev. PLATE 210 BimuriA, CHRISTIANIA, ISOPHRAGMA A. Bimuia' paroula ‘Cooper, tiew species 5. fT 209208, AV PPS. ORE eae. EG 769 (1) Pedicle exterior, 2, holotype, 117460d; (2) brachial view, X 3, of the holotype; (3) pedicle interior, 2, paratype, 117460f; (4) brachial interior showing septa, X 3, paratype, 117469e. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. B: Bimuria ci. B, superba Ulrich and (Cooper... sa cce esas deais'sc dee eee ee See 771 (5) Pedicle view showing bundled lamellae on the outer surface, 1, figured specimen, I10064a. Effna formation, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. CC." Bimiuria’ ? matutina’ Cooper; new specieserew sewhoosntiads ky BO: oeole aetes 768 (6-8) Posterior, side, and exterior views of a pedicle valve, X 3, paratype, 66288a; (9) same, X 2; (10) another pedicle exterior, 3, holotype, 66288b. Boulder in Mystic conglomerate, Range 6, Lot 20, near Mystic, Stanbridge Township, Quebec, Canada. D. Christiania platys 'Coopenjinew Speciesta toto .OS0GINa I. a cc bcc s cee es 861 (11) Brachial interior, X 2, paratype, 117574. Edinburg formation (Nidulites zone), 100 yards south of Battlefield Crystal Caverns entrance on U. S. Highway 11, Hupp Hill, 1 mile north of Strasburg, Strasburg (15’) Quadrangle, Va. To.) Bina see Te eet, BOE STR RE ees ee rec ean nts evens enero ns 772 (13) Brachial view of an incomplete specimen, X 1, figured specimen, 117473; (12, 14) pedicle and brachial views of the preceding specimen, X 2, showing pedicle foramen. Dark shale under the Eureka quartzite, north-facing nose of hill 8167, Martins Ridge, Monitor Range, Roberts Mountains (1°) Quadrangle, Nev. F. Bonariavsaperva Winer and” Coopers. . cle. ore dee cre ce ree cece ete one mats 771 (15, 16) Anterior and pedicle views of a pedicle valve showing good develop- ment of the exterior lamellae, & 1, hypotype, 117471. Arline formation (top), small quarry on east side of Tennessee Highway 66A, 4% mile northeast of St. Clair, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. G.. Bimuria’'stphonata®’ Cooper, ‘new species. £. 2). or on eee ee ee ees 770 (17, 21, 22) Brachial, anterior, and posterior views of a young complete speci- men, 5, showing the pedicle siphon, holotype, 117470a; (18) brachial view of the preceding enlarged <8 to show the pedicle siphon, pseudodeltidium, and chilidial plates; (19, 20) pedicle and side views of a somewhat larger specimen than the preceding, X 5, paratype, 117470d; (23, 24) two views of the same brachial valve showing the cardinalia, septa, and serrated lateral lobes, 5, paratype, 117470e. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Pratt Ferry formation, 0.2 mile south of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. H: Isophragma ponderosum Cooper, New SPECIES... 2... cesccecccccccccccccccccccs (25) Plasticine replica of the pedicle exterior, 2, paratype, 123261; (31) pedicle exterior, X 2, paratype, 123262a. Yellow-weathering limestone on 25-foot sandstone at base of Eureka group, 3 miles north of Martin Ranch on west side of hill 8167, Roberts Mountains (1°) Quadrangle, Nev. (26-30) Respectively anterior, pedicle, posterior, brachial, and side views of a complete specimen, X 2, holotype, 123259a; (32) brachial view, x1, of the holotype. Yellow-weathering limestone on 25-foot sandstone at base of Eureka group, 2 miles north of Martin Ranch, Roberts Mountains (1°) Quadrangle, Nev. 1. Bonursa’ superba Ulrich and) Coopers Sv ooo S02 6s casen, clay y= aaiunieiciaiee del Sa's eee (33, 34) Respectively X1 and X14 enlargements of a large brachial valve, hypotype, 110981. Arline formation, quarry at Marion, Marion (T.V.A. 218-SE) Quadrangle, Va. PLATE 211 BIMURIA A: Borin MMOHUTE EOUPEL / TIENT SPECIESIAAil es cs cee «coarse ssgeece ce nenenetcetcns (1) Pedicle interior showing teeth and small pedicle siphon, X 4, paratype, 110976j; (2) posterior view of the same specimen, X 6, showing the foramen of the pedicle siphon; (13) another view of the same specimen, X 6, showing the siphon more clearly; (3) interior of the brachial valve showing the diver- gent septa, 4, paratype, 110976n; (4) same specimen as preceding, XX 4, tilted to show brachial processes and median ridge; (5) anterior, X 3, of the holotype, 110976g; (6) pedicle interior tilted to show teeth, x 4, paratype, 110976k; (9-11) pedicle, brachial, and side views, X 4, of the holotype; (7, 8) posterior and anterior views of two brachial interiors showing median plates and cardinalia, X 4, paratypes, 110976m and 110976p; (12) brachial view of a small specimen, 6, showing pedicle siphon, paratype, 1109761. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. B. Binurepisapenoa ilrichy andy Cooper 2 06a. ts sa tht gine Sataiely 2% bisa caie a's late wean (15, 18) Interior of the brachial valve seen in normal view and tilted to show median septa and brachial processes, X 2, paratype, 108200b; (14, 17) posterior views of the same specimen as shown in the preceding views, < 3, showing the cardinal process and details of the median septa; (19, 23) respectively 1 and X 2 views, showing foramen, cardinal process and chilidial plates, of the holo- type, 108200a; (24) pedicle view, <1, of the holotype; (20) pedicle interior, X 2, showing pallial markings, paratype, 108200f; (22) pedicle interior showing pallial marks, < 14, paratype, 108200c; (25) impression of the pedicle interior showing the pallial marks, < 14 (specimen later etched for brachial interior). Arline formation (middle), north side of wagon road in glade, + mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. (16, 21) Interior and exterior of a pedicle valve, 1, showing details of the pallial marks, paratype, 108201. Arline formation, 6 to 10 miles southeast of Loudon, Loudon (30’) Quad- rangle, Tenn. 1205 Page 737 771 766 771 1206 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 PLATE 212 BimuriA, LEPTAENA Page A. Bitepuetailamellosa, | BAsslet) aiid saci ge hat el pecan Pep ease Wade ak bts pe ancscnden crepe 767 (1) Brachial interior, X 2, paratype, 66168d; (4, 10) posterior and normal views of another brachial valve, < 3, showing septa and cardinalia, hypotype, 110948a; (5, 8) pedicle and brachial views, 1, of the lectotype, 66168a; (6) brachial view of another complete specimen, < 1, hypotype, 110948b; (9) beak region of the preceding, X 3, showing chilidium; (7) pedicle interior, X 3, showing the foramen and teeth, hypotype, 110948c. Oranda formation, along the railroad 4 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. (2) Impression of the pedicle interior showing the pallial trunks, < 2, hypotype, 110949c; (3) impression of the brachial interior, showing slots representing the septa, X 2, hypotype, 1109494. Oranda formation, 1 mile northwest of Guilford Springs, 24 miles southwest of Chambersburg, Chambersburg (15’) Quadrangle, Pa. B. Bunwres-butiss Cooper, new species ii) Pei yen, 8 SS eIBaD OTe BNR Te) 765. (11) Pedicle interior showing pallial marks and pedicle foramen, X 2, paratype, 110933d; (13) posterior portion of the brachial valve, X 2, showing septa, para- type, 110934c; (15) brachial interior, 2, of a young specimen, paratype, 110933e; (17) pedicle interior, X 2, showing pallial marks, paratype, 110934b; (26) exterior, 1, of same specimen; (18) brachial interior, X 2, paratype, 110932e; (20) exterior of the pedicle valve, 1, showing lamellae, paratype, 110932a; (22, 23) brachial and pedicle views of a complete specimen showing the great development of lamellae on the surface, < 1, holotype, 110934a; (27) posterior of pedicle valve showing foramen and deltidium, X 4, paratype, 123264; (29, 30) respectively X 1 and X 2 enlargements of an unusual pedicle valve showing extravagant development of the lamellae, paratype, 110033c; (31) anterior view of an adult specimen, X I, paratype, 110933a. Little Oak formation, intersection of Bailey Gap and main roads, SWiSW4 sec. 13, T. 19 S., R. 2 W., 13 miles northeast of Newhope Church, Vandiver (15’) Quadrangle, Ala. (12) Interior of the brachial valve of a young specimen, X 2, paratype, 110930a; (14, 24) respectively X 1 and X 3 views, showing the pedicle foramen, deltidium, chilidial plates, and cardinal process, paratype, 71506a; (16) brachial exterior of a young specimen showing the exterior lamellae, < 1, paratype, 110930b; (19) brachial interior of a very young specimen, X 2, paratype, 110930d; (21, 28) respectively X I and X 3 enlargements of the brachial view of a complete speci- men, showing pedicle foramen, pseudodeltidium, chilidial plates, and cardinal process, paratype, 110930c. Little Oak formation, 4 mile north of Pelham, 660 feet east of intersection Cahaba Valley and Helena roads, Bessemer Iron District (15’) Quadrangle, Ala. : (25) Interior of an adult brachial valve, x 2, paratype, 110935a. Little Oak formation, quarry north of Pelham, Bessemer Iron District (15’) Quadrangle, Ala. C. Lepiaena* ordourcicat Cooper) new ‘Species se). ctins code eee tke ee es 820 (32) Exterior of a small brachial valve, X 2, paratype, 117665. This is the earliest known true Leptaena yet found in North America. Edinburg formation (just above siltstone), on Hiatt Run, 200 yards east of U. S. Highway 11, 3 miles north of Winchester, Winchester (15’) Quadrangle, Va. PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER 1207 PLATE 213 CRASPEDELIA, HESPERINIA, ISOPHRAGMA, PryCHOGLYPTUS, RHIPIDOMENA, STROPHOMENA Page A. Craspedelia marginata Cooper, new SPECIES. os. e sees eee eeeeee sete ce tte eeceeees 773 (1-4) Respectively exterior, posterior, anterior, and interior views of the pedicle valve, X 4, showing pedicle siphon and deflected anterior flanges, paratype, 1174742; (5, 6, 8, 10) respectively exterior, anterior, interior, and posterior views of another pedicle valve, X 3, holotype, 117474b; (7, 9) anterior and interior views of the preceding specimen, X 6, showing pedicle siphon in both views; (11-13) anterior, tilted, and normal views of a brachial valve showing the car- dinalia and septum, X 4, paratype, 117474c; (14, I 5) two views of another, old-age brachial valve showing the cardinalia and ridges, 6, paratype, 117474d; (16) the brachial interior showing the deflected flange, X 4, paratype, 117474e; (17) the preceding brachial interior, X 5, tilted to show the flange; (18) exterior view of the preceding specimen, X 5, with complete outline restored; (19) exterior showing the hypercline interarea, X 6, paratype, 117474; (20) chilidial structures, ca. X 10, of the preceding specimen. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. Bs USOPRPAOINE SP. Lo oe cosa cepa es cing sent ernne ane cts e cuties cits: +76 unk 9 glenieste 740 (21) Interior of a small brachial valve showing cardinalia and median septal plates, X 3, figured specimen, 123286. Horizon and locality same as preceding. C. Ptychoglyptus pulchrus Butts = P. virginiensis Willard. .....-...e0+eeeeeeer eres 818 (22) Exterior view of a well-preserved pedicle valve, X 3, hypotype, 123285d. Horizon and locality same as preceding. TD, RWAOMENG SP. Te: panne cence sna teepcretcmo cms ne nef” He ue ene aah, 873 (23, 24) Brachial and pedicle views of an incomplete specimen with outlines restored, X 1, figured specimen, 117699a. Arline formation, north side of the wagon road through glade, 4 mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. E. Hesperinia kirki Cooper, new Species......-+++erseeeesrterrtesstttes sss ssins 822 (25) Pedicle interior, X 2, showing the cardinalia, paratype, 117625. Upper Pogonip group, White Pine Range, White Pine County, Nev. F. Strophomena cf. S. inspeciosa Willard.....-.--sssescseerssceescsses sts t stirs 939 (26-30) Respectively posterior, anterior, pedicle, side, and brachial views of a complete specimen, X 1, hypotype, 117728a ; (31-34) respectively brachial, side, anterior, and posterior views of a specimen slightly larger than the preceding, X 1, hypotype, 117728b. Wardell formation (Hesperorthis zone), cut on U. S. Highway 25E, Evans Ferry, 4 mile north of Indian Creek, Howard Quarter (T.V.A. 162-NW) Quad- rangle, Tenn. G. Strophomena inspeciosa Willard.........+.s+erserceetteetresses seers sess et ess 939 (35-38) Respectively side, anterior, brachial, and pedicle views of a complete specimen, X 2, hypotype, 117725. Wardell formation (between Hesperorthis and Sowerbyella beds), same locality as preceding. PLATE 214 CHRISTIANIA A. Christiania trentonensis Ruedemann.........+e+eeeee sere recesses ene tte nt sees 865 (1) Plaster replica of the brachial interior, X 2, cotype, New York State Mus. ; 1208 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page (2) rubber replica of the exfoliated brachial valve, X 2, New York State Mus. Rysedorf conglomerate, Rysedorf Hill, near Albany, N. Y. BL Chrisnoima ck, C. platys, Cooper, new Species. £22 sii siatihe cca alds cas eens seaka note 861 (3, 4) Pedicle and brachial views of a broad individual, <1, figured specimen, 117575; (5) brachial view of the preceding specimen, X 2, showing pseudo- deltidium. Little Oak formation, 4 mile north of the bridge on U. S. Highway 31, Pelham, Bessemer Iron District (15’) Quadrangle, Ala. C. Chrittatua’ subquadraia’ CEfall)! 2 0 Gse, 2 SORE ae, Od, 29), EOE. 862 (6-8) Pedicle, brachial, and side views of a complete but young specimen, X 2, hypotype, 117579a. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. D, Chrisiona. subouediaia \Cbiall)>..12, 2c sone l eee ee Cele eee ee 862 (9-11) Brachial, pedicle, and side views of a complete specimen, 1, hypotype, 71501; (12-16) anterior, side, posterior, pedicle, and brachial views, * 2, of the preceding specimen. Little Oak formation, $ mile north of Pelham and 660 feet east of the inter- section of Cahaba Valley and Helena roads, Bessemer Iron District (15’) Quad- rangle, Ala. (17) Brachial view of a complete specimen, X 1, hypotype, III013@. Upper part of “Lenoir” limestone, 0.15 mile south of Pratt Ferry, Blocton (15’) Quadrangle, Ala. (18) Brachial view of a complete specimen, <1, hypotype, 111016a; (19) pos- terior part of preceding specimen enlarged X 2 to show apical foramen, pseudo- deltidium, and cardinal process; (26, 27) interior of two pedicle valves showing the complicated pallial sinuses, <2, hypotypes, 111020b, 111020c; (31, 36) brachial interior in full view and posterior view showing bilobed cardinal process, muscle platforms, brachiophores, and septa, < 2, hypotype, 111020d; (32, 34, 35, 39) interior, anterior, side, and posterior views, <2, of a brachial interior showing septa, brachiophores, and cardinal process, hypotype, 111020a; (37) posterior view of the same brachial valve, X 3, showing muscle platforms. Arline formation (lower middle), opposite cabin 0.3 mile southeast of Friends- ville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. (20) Impression of the pedicle interior showing long pallial trunks, < 2, hypotype, III0I7b. Athens formation (base), near Christiansburg, Sweetwater (T.V.A. 131-SW) Quadrangle, Tenn. (21, 22) Impression of the pedicle interior and posterior view showing muscle scars, X 2, hypotype, 111018a; (30) impression of the brachial interior showing the marks of the septa, X 2, hypotype, 111018b; (23, 24) interior and posterior views of another pedicle interior showing pallial marks and muscle scars, X 2, hypotype, I11021a; (29) another impression of the pedicle interior, > 2, hypotype, I1102Ic. Athens formation (base), just east of road intersection, 24 miles southeast of Riceville, Calhoun (T.V.A. 125-SW) Quadrangle, Tenn. (25, 28) Pedicle valves showing complicated pallial trunks of the interior, X 2, hypotypes, I11029a and IIIOI5. Arline formation (middle), north side of wagon road in glade, 4 mile south- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. (33) Interior of a well-preserved brachial valve, X 2, showing septa and small muscle platforms, hypotype, 117580}. PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER Arline formation, 100 yards southwest of the Negro Cemetery, 4 mile north- east of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. (38) Interior of a pedicle valve, X 1, hypotype, 110999a. Little Oak formation, 2 miles north of Pelham, Bessemer Iron District (15') Quadrangle, Ala. PLATE 215 CHONETOIDEA, CHRISTIANIA, SOWERBYELLA AS" Sowerbyelia 'et.S. nosuia-Cooper, Mew Species eS os. desig dae cess lac esas eet s (1) Brachial view, X 3, figured specimen, 117501; (2-4) respectively side, ante- rior, and posterior views, < 2, of the same specimen. Ward Cove formation (just above Nidulites zone), north of U. S. High- way 19, + mile west of Pounding Mill, Pounding Mill (15’) Quadrangle, Va. Bi sGipistania. platys” Cooper, NEW Speelegu. Wem cs ck Nes cot okie dees ete coe tes Taree» (5) Impression of the pedicle interior showing the pallial trunks, x 2, paratype, 111007; (8) exterior of a small pedicle valve, X 1, paratype, I110IIa; (9, 10) respectively X 1 and X 2 views of a large pedicle valve, holotype, 111011b. Edinburg formation (Cyrtonotella zone), small glen about 4 mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. (6, 7) Respectively X 1 and X 2 views of the brachial interior showing the ridges and flatness of the valve, paratype, I11004. Edinburg formation (Cyrtonotella zone), quarry 4 mile east of the railroad station at Strasburg Junction, Strasburg (15’) Quadrangle, Va. C.' 'Christiama''e&G.' subquadrata*( al yao o FU I, bs TPP, AI (11, 12) Pedicle and side views of an exceptionally long specimen, x 1, figured specimen, 117577. Edinburg formation (Cyrtonotella zone), ravine at switch } mile east of Stras- burg Junction, Strasburg (15’) Quadrangle, Va. D. Christiania trentonensis brevis Butts = C. auriculata Cooper, new species........ (13) Pedicle valve, X 2, figured specimen, 97536b. Oranda formation, along the railroad 4 mile west of Strasburg, Strasburg (15’) Quadrangle, Va. EL Christiania ‘subquadrata® (HAM cB. kO RIO, 2, UE PAT og (14-17) Respectively posterior, side, brachial, and pedicle views of a well-pre- served specimen, X 2, hypotype, 117578. Edinburg formation (Cyrtonotella zone), dam on Shenandoah River 14 miles N. 61° E. of Edinburg, Edinburg (15’) Quadrangle, Va. (18, 19) Side and pedicle views of another individual, < 2, hypotype, 123363. Edinburg formation (Nidulites zone), on U. S. Highway 11, 100 yards south of Battlefield Crystal Caverns entrance, 1 mile north of Strasburg, Strasburg (15’) Quadrangle, Va. F. Christiania auriculata Cooper, new SpeCieS......... cc cece cece cc cece ececcceeees (20) Brachial view of a complete specimen, X 1, holotype, 975372; (21) posterior of the same specimen enlarged, X 3, to show the pseudodeltidium and apical foramen; (27) brachial interior, X 2, paratype, 97537b. Oranda formation, 4 mile west of Strasburg, Strasburg (15’) Quadrangle, Va. (23, 26) Pedicle and brachial views of a large specimen, 1, paratype, 117571; (28) brachial view, X 2, of same. Oranda formation, junction of Virginia County Highways 691 and 692, west of Lantz Mills, Edinburg (15’) Quadrangle, Va. (22) Brachial view of another complete specimen, 2, paratype, 111005b; (24, 25) respectively side and brachial views of a complete specimen, 1, paratype, 117570. 1209 Page 787 861 862 860 862 860 I210 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. Oranda formation, 200 yards on Virginia County Highway 616, southeast of U. S. Highway 11, 3.5 miles southwest of Mount Jackson, Mount Jackson (15') Quadrangle, Va. G. Christiania’ platysCooperpmew! species woes Tk BROS (29) Brachial interior of a silicified specimen, X 2, paratype, 117573. Edinburg formation (lower), 14 miles south of Wadesville, Winchester (15') Quadrangle, Va. H. Chonetoidea virginica Cooper, new species ox. eer ccc ccc ee sens (30) Plasticine replica of the pedicle exterior, 4, paratype, I111097a; (31) im- pression of the pedicle interior showing the small muscle marks, X 5, paratype, 111097b; (32) plasticine replica of the pedicle interior and exterior, xX 4, pre- pared from the preceding mold; (33) impression of the brachial and pedicle interior, X 5, holotype, 111097c. Edinburg formation (Liberty Hall facies), bluff on the north fork of the Shenandoah River, $ mile above the south fork, opposite the bridge at Riverton, Front Royal (15’) Quadrangle, Va. PLATE 216 DACTYLOGONIA A. ‘DachvloganiaispicS: ofc wesnedess aeacdesauared. tniteeceu beats aogotnht Aas (1-3) Brachial, side, and pedicle views of a complete specimen, X 2, figured speci- men, 117613a; (4) brachial view, X 1, of the same specimen. Poteet formation (Yellow Branch member), road along Yellow Branch, 5 miles southeast of Rose Hill, Rose Hill (T.V.A. 161-NE) Quadrangle, Va. B. Dactylogonia concentrica Cooper, new SPeCi€S.........000ce00 ae seuilelele seneeeees (5) Brachial view of a complete specimen, X 1, holotype, 117583; (6, 7) brachial and pedicle views, X 2, of the holotype. Lincolnshire formation (Hogskin member ), 1.7 miles northeast of Hall Cross- road, Fountain City (T.V.A. 146-SW) Quadrangle, Tenn. C:. Dacinlogonia-obtusasGooper, new SPECIES sSocywis er rer hi pss eeees Senter ci evottoeets (8) Pedicle view of a complete specimen, 1, holotype, 1175941; (10, 11) side and brachial views of another specimen, XX I, paratype, 117594d; (9) interior of the brachial valve showing the plates arising from the valve floor, x 2, para- type, 117594h; (13) the same, 2, tilted to the side to show the floor plates; (12) fragment of the pedicle interior showing the muscle scars, X 2, paratype, 117594c. Lincolnshire formation, Clinch Valley at Shiloh Church, near the center of the northwest subquad., Pressmens Home (T.V.A. 171-NE) Quadrangle, Tenn. D. Daciylogortia geniculate. Ulrich and) :\Coopetis isis satewwisia ds bawere.d a:avs 4, holotype, 117655a; (16) exterior of an imperfect brachial valve, < 4, paratype, 117655c; (17, 18) interiors of two brachial valves showing the cardinalia, < 4, paratypes, 117655d, 117655b. 127 Page 853 856 856 946 858 852 859 855 857 PART II CHAZYAN AND RELATED BRACHIOPODS—-COOPER 1217 Page Bromide formation (Mountain Lake member), slightly north of the middle of sec. 32, T. 2 S., R. 2 E., 2 to 3 miles northeast of Springer, Carter County, Okla. PLATE 223 BELLIMURINA, CYPHOMENA, LIMBIMURINA, MURINELLA, PELONOMIA A. Bellimurina sulcata Cooper, new SpecieS.......-.scececccceseececcec cere ccconcs 858 (1) Exterior of the pedicle valve, X 1, holotype, 117654; (2, 3) side and pedicle views, X 2, of the holotype. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quadrangle, Ala. B. Limbimurina brevilimbata Cooper, new SPeCi€S.......ceseccceceecesscscceceeees 852 (4) Fragment of brachial valve showing cardinalia and adductor ridges, X 3, paratype, 117661b. Botetourt formation, south side of the road, 0.2 mile east of Strasburg Junc- tion, Strasburg (15’) Quadrangle, Va. C. Bellimurina parviplicifera Cooper, New SPeCi€S.........ceecccccercccecsnceceees 856 (5, 6) Respectively X 1 and X 2 views of the pedicle exterior, holotype, 117652. Lebanon formation (upper half), on U. S. Highway 41, 9.6 miles southeast of Murfreesboro, Rutherford County, Tenn. D. Cyphomena homostriata (Butts). <2... cece ces cece econ soc sins cei e.0e,0.0 9.4% 2 wnsee 843 (7) Interior of the brachial valve showing the cardinalia and adductor ridges, X 4, hypotype, 117624. Oranda formation, along the railroad 4 mile west of Strasburg, Strasburg (15’) Quadrangle, Va. E. Pelonomia. delicatuia. ,CBimings)) 5 cieiecinreve scinsisss 45.0 o's sesae toast say: sales ain 699 (8) Exterior of the pedicle valve, X 3, hypotype, 117558. Table Head series, 1 mile west of Aguathuna, Port-au-Port, Newfoundland. (9) Impression of the interior of the brachial valve, < 3, hypotype, 117557; (10) plasticine replica of the brachial interior, X 3, prepared from the preceding and showing the cardinalia and rows of pustules along the median line. Table Head series, Table Head, Newfoundland. B. Muriwnella -partsia Cooper, new SPeCi@S. < oi. 0. 2:02 sic «00 einen 0.0/0 mgieinie sise6 ss sa sei nis,s 847 (11-15) Respectively pedicle, anterior, brachial, side, and posterior views, X 1, of the holotype, 117639; (16, 17) respectively 1 and X 2 views of the brachial interior showing cardinalia and pallial marks, paratype, 117640. Bromide formation (Mountain Lake member—reefy beds), west side Okla- homa Highway 18, 1.8 miles south of Sulphur, Okla. GL Gy Piomena ¢ radiarss CORMUTCH oh ac aig cccus ciseis ine acre Riga syolemalela ee situace sialh sale si 844 (18) Pedicle exterior, < 1, of the holotype, McGill Univ. (no number). Leray formation = Chaumont, St. Vincent de Paul, Quebec. H. Bellimurina charlotiae (Winchell and Schuchert) .........ccccceccccccccccceece 855 (19-21) Respectively brachial, side, and pedicle views of a nearly perfect speci- men, < 1, hypotype, 45358a; (22-24) respectively pedicle, brachial, and posterior views of the preceding, X 2, showing the foramen and pseudodeltidium. Decorah formation (Guttenberg member, Rhinidictya bed), West St. Paul, Minn. PLATE 224 CYPHOMENA A. Cyphomena angulata Cooper, new SPeCieS........ 0. cece ceccccccecccceccccceres 841 (1-5) Respectively posterior, anterior, side, pedicle, and brachial views of a large 1218 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. and complete specimen, X 2, holotype, 117619a; (7) brachial interior showing cardinalia, 2, paratype, 117619b. Edinburg formation (Cyrtonotella zone), ravine at switch, § mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. (6) Brachial interior, < 3, paratype, 117616a. Shippensburg formation (150 to 200 feet above the base), railroad cut 25 miles southwest of Marion, Chambersburg (15’) Quadrangle, Pa. (8) Impression of the pedicle interior showing the muscle area, X 3, paratype, 11761 4a. Shippensburg formation (nodular shaly zone below Nidulites), road cut on U. S. Highway 40, just west of Conococheague Creek, 7 miles west of Hagers- town, Williamsport (15’) Quadrangle, Md. BE. Cyphomena’ homosiriata CBGts)... o. Sa see sata s o.0 syns 5 purse sccg~ Salt aang 5 aeae ols (9-11) Side, pedicle, and brachial views, X 2, of the holotype, 97545. Oranda formation, along the railroad 4 mile west of Strasburg, Strasburg (15’) Quadrangle, Va. (12, 13) Brachial and pedicle views of a small specimen, X 2, hypotype, 117622. Oranda formation, west side of U. S. Highway 11, about 1 mile southwest of Strasburg, Strasburg (15’) Quadrangle, Va. (14-18) Respectively anterior, posterior, brachial, side, and pedicle views of a complete specimen, X 2, hypotype, 117623a; (19) brachial view, <1, of the preceding specimen. Oranda formation, Shenandoah River, 14 miles N. 61° E. of Edinburg, Edin- burg (15’) Quadrangle, Va. (20) Brachial interior, X 2, showing cardinalia and ridges, hypotype, 117615. Oranda formation, 13 miles west of Kauffman and 34 miles north of Green- castle, Chambersburg (15’) Quadrangle, Pa. C. Cyphomena angulata Cooper, new SPeCi€S. .... 22... cece cece eee teense ence cece (21, 22) Impression of the brachial interior and a plasticine replica prepared from it, X 2, paratype, 117618. Shippensburg formation (base of Nidulites zone), road cut on U. S. High- way 40, west bank of Conococheague Creek, 7 miles west of Hagerstown, Williamsport (15’) Quadrangle, Md. D: Cyphomena. grandis, Cooper, MEW ySPCCIES. «2 -pchace sie «\9,/s/elaeterd a /o,8 adapaiien ee a fosnin ole (23-27) Respectively anterior, postero-pedicle, pedicle, side, and posterior views of a small but complete specimen, X 1, holotype, 117621a; (35, 36) respectively <1 and 2 enlargements of the preceding specimen; (28-32) respectively postero-pedicle, partial-anterior, pedicle, side, and anterior views of a large and strongly geniculated pedicle valve, 1, paratype, 117621b; (33, 34) respectively 1 and x2 enlargements of a complete individual, paratype, 117620. Martinsburg formation (part with Brongniartella and referable to the Salona formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. PLATE 225 DACTYLOGONIA, TERATELASMA A. Dactylogomaunagnifica Cooper, New:SpecieSt sh ois cen ss cee ter eee oe nea sone ces (1, 3) Interior and exterior of the pedicle valve, 2, showing pseudodeltidium, foramen, and muscle marks, holotype, 117942a; (2) exterior of the brachial valve, X 2, paratype, 117942d; (4) interior of the brachial valve, X 4, showing adductor ridges and cardinalia, paratype, 117942c. 127 Page 843 841 842 830 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER Lower Ward Cove formation, 3 mile southwest of Mount Eager Church, Hogskin Valley, Powder Springs (T.V.A. 154-SW) Quadrangle, Tenn. B. Teratelasma newmani Cooper, New SPeCi€S.......-. cee e cece cece cence tenes eeenes (5-7) Respectively brachial, posterior, and pedicle views of a complete interior filling (steinkern), showing median septum, adductor ridges, and pits of the long adductor ridges on the side of the pedicle valve, X 3, holotype, 117938d (plug of pedicle foramen may be seen in posterior view) ; (8) plasticine replica of the brachial valve exterior, X 3, paratype, 117938g; (9) plasticine replica of another brachial valve exterior showing ornamentation in more detail, 3, paratype, 117938e; (10, II) impression of the interior of the brachial valve showing pits of cardinalia and septa, and plasticine replica of the interior prepared from it, 3, paratype, 117938m; (12) impression of the interior of the pedicle valve showing muscle scars and pits at apex, representing prongs of cardinal process, < 3, paratype, 117938n; (13) exterior of another brachial valve, X 2, paratype, 117938-0; (14, 15) impression of the brachial interior and the plasticine replica prepared from it, X 3, paratype, 117938j; (16, 17) impression of the interior of the pedicle valve and the plasticine replica of the interior prepared from it, 3, showing dental plates, paratype, 117938-1; (18) impression of the interior of the brachial valve broken along the median septum and showing the strong elevation of that structure, < 3, paratype, 117038q; (19, 20) impression of the interior of a pedicle valve and the plasticine replica of the interior prepared from it, X 3, paratype, 117938k; (21) plasticine replica of the interior of a bra- chial valve, X 3, paratype, 117938c; (22) plasticine replica of the exterior of the pedicle valve, < 3, paratype, 117938f; (23) another plasticine replica of the pedicle valve exterior, X 3, counterpart to fig. 12. Sevier formation (Benbolt equivalent), 0.53 mile east-southeast of Old Kagley Church, Binfield (T.V.A. 139-NE) Quadrangle, Tenn. PLATE 226 DACTYLOGONIA, MURINELLA II UTI UNTE EST ae car eie fae ocx aie, s/o Sigia casve' oo cip cia: ale ies eet = oka ay saneel de pha alaata we Siaperes, 2 (1) Plasticine replica of the brachial exterior, <1, figured specimen, 117649; (2) plasticine replica of the brachial interior, X 2, of the preceding specimen. Little Oak formation, 1 mile north of Pelham, Bessemer Iron District (15’) Quadrangle, Ala. BS Deira SS A nie o. te ec te t aid chats sn aaa eh tie Prelginiais eel Sle a's ota ses tee ese (3) Impression of the pedicle interior, X 1, figured specimen, 117647; (4) poste- rior of preceding, X 2, showing muscle scars. Murfreesboro formation, east edge of Murfreesboro, Murfreesboro (15’) Quadrangle, Tenn. C. Dactylogonia’ incrassata (Hall). 2.02. cee eee eee ce eee ie ee weet ences (5) Brachial view, < 1, of the hypotype, 117590a; (6-9) respectively side, pedicle, posterior, and brachial views, X 2, of the same hypotype. Crown Point formation, Sloop Bay, Valcour Island, Lake Champlain, Platts- burg (15’) Quadrangle, N. Y. D. Murinella muralis Cooper, new SPeCieS... 2.0... ccc cece ce ccc eee e sect cccceesees (10) Exterior of the pedicle valve, 1, holotype, 117636a; (11, 12) two views of the interior of the preceding pedicle valve, X 2, one showing pseudodeltidium and interarea and the other the muscle area; (13) exterior of another pedicle valve larger than the preceding, X 1, paratype, 117636b; (16) posterior part of an imperfect specimen showing the interarea and pseudodeltidium, X 2, para- type, 117636d; (24) exterior of a large brachial valve, X 1, paratype, 117636c; 1219 Page 824 851 850 828 846 I220 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 (27, 28) interiors of two brachial valves, 2, showing the cardinalia, pallial marks, and subperipheral rim, paratypes, 117636e, 117636f. Dryden formation, on the road to Tazewell, 14 miles northeast of Lone Mountain, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. (14, 15) Exterior and interior of a small pedicle valve, X 1, paratype, 1176374; (21, 22) exterior and interior of brachial valve, X 1, paratype, 117637b; (23) same brachial interior, < 2. Dryden formation (Wardell part), 1 mile west of Lone Mountain, Tazewell (T.V.A. 154-NE) Quadrangle, Tenn. (17-19) Exterior, posterior, and interior of brachial valve, X 2, showing cardinalia and septa, paratype, 117632a; (20) interior, 1, of the same specimen; (26) another brachial interior, X I, paratype, 117633. Poteet formation (9-foot marble band = Yellow Branch member), on the road beside Yellow Branch, 5 miles southeast of Rose Hill, Rose Hill (T.V.A. 161-NE) Quadrangle, Va. (25) Interior of a large brachial valve showing strong subperipheral rim, X 1, paratype, 117635c. Wardell formation, Raccoon Valley, $ mile northeast of Fleanor Mill, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. PLATE 227 MurRINELLA A. Murinella semireducta Cooper, new SPeCicS........ceccecececececescesscssccnes (1) Brachial view of the complete specimen before dissolving out the matrix with acid, X 1, holotype, 117645; (2) interior of the posterior part of the brachial valve of the preceding specimen, X 2, showing the muscle scars; (3, 4) respec- tively 1 and X 2 enlargements of the brachial interior of the same specimen, showing subperipheral rim and cardinalia; (5) posterior of the preceding valve, 2, showing the prongs of the cardinal process. Lincolnshire formation (Hogskin member), Sally Cleveland Farm, 3 mile southwest of Washburn, Dutch Valley (T.V.A. 154-SE) Quadrangle, Tenn. B.. Murmelia plana -Gooper,.. ne wy SPECIES x). 2i<.e micis Sjoheiansicls moh “Taie sort pie siriemeta see fos (6, 7) Posterior and brachial views of a complete specimen, 2, holotype, 1176442. Lincolnshire formation (Hogskin member), Evans Ferry, about 1 mile north of Indian Creek, on U. S. Highway 25E, Howard Quarter (T.V.A. 162-NE) Quadrangle, Tenn. C. ‘ Murinella biconvexa. Cooper; New SPECIES ss «c's apsias syois'aseyeicla oiate 6 2) <}die sisi lao efi (8, 9) Brachial and pedicle views, X 1, holotype, 117629a; (10-13) respectively pedicle, posterior, brachial, and side views, X 2, of the holotype; (14) brachial view of another complete specimen, X 2, paratype, 117630; (15, 16) pedicle and brachial views, < 1, of another paratype, 117629b. Horizon and locality same as A above. D. Murinella partita Cooper, MEW SPECIES... 2... 5c cccee cle esccccodeccenevereetneses (17) Exterior of the brachial valve, X 1, part of paratype, 117638; (18, 21) ex- terior and interior of the brachial valve, X 1, part of same paratype; (19, 20) exterior and interior of the brachial valve, X 2, showing ridges and cardinalia; (22) posterior of the brachial valve showing the cardinal process, X 2; (23, 24) exterior and interior of the pedicle valve, X 2, showing the muscle area and median ridge; (25) posterior of the pedicle valve showing foramen and pseudo- deltidium, X 2—all of paratype, 117638. Bromide formation (Mountain Lake member—reef limestone), road cut, east Page 849 849 845 847 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER side, on Oklahoma Highway 18, sec. 11, T. 1 S., R. 3 E., 1.8 miles south of Sulphur, Murray County, Okla. PLATE 228 CypHOMENA, DAcTyLocontiA, LEPTAENA, MURINELLA A. Cyphomena angulata Cooper) mew Species: ii. bee's | tee kaieelele eke ee. (1-5) Respectively posterior, anterior, pedicle, side, and brachial views, X 2, of the paratype, 117617a; (6, 7) pedicle and brachial views, 1, of the same specimen. Edinburg formation (lower part of Nidulites zone), east side of U. S. High- way II, 100 yards south of the entrance to Battlefield Crystal Caverns, 1 mile north of Strasburg, Strasburg (15’) Quadrangle, Va. B. Leptaenaordovicicay Cooper; Mew! SPeCies ee ssjeis aurciejeiecdia'e,s.0'ers a ecidiau std olecdalqed ale oles (8) Brachial interior showing ridges and pallial marks, X 2, paratype, 117667. Martinsburg formation (part with Brongniartella and referable to the Salona formation), on Virginia County Highway 617 = 910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. (9, 10) Respectively * 2 and 1 enlargements of the pedicle exterior, holotype, 117669a; (11, 18) respectively X 2 and X 1 enlargements of the brachial interior showing cardinalia, paratype, 117669b. Oranda formation (top), slope on north side of Virginia County High- way 777, under barn, just west of junction of roads 777 and 617 = 910, about 4 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. (12) Poorly preserved pedicle valve, 1, paratype, 117668. Carters formation (5 feet below top), top of old quarry 0.3 mile north of Gate City, Leeds (15’) Quadrangle, Ala. (13, 14) Respectively X 2 and <1 enlargements of the pedicle impression show- ing the muscle scars and the papillose interior, paratype, 117670a; (15) plas- ticine replica of the pedicle exterior, X 2, mold, paratype, 117670b; (16) impres- sion of the brachial interior, & 2, paratype, 117670c. Oranda formation, north side of road, 0.6 mile northwest of Linville Station, Broadway (15’) Quadrangle, Va. (17) Exterior of a small pedicle valve, & 1, paratype, 117664a. Rodman formation, Bellefonte, Bellefonte (15’) Quadrangle, Pa. CD eCE NOG OME (S10: | Nie wien aie onic ie tyore minis ie ey niotiaaireial Srater a atu /aieieleral imine aiakers ota) ameateie oieuatee (19) Interior of a pedicle valve, X 2, figured specimen, 117605. Benbolt formation, + mile north of the school at Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. 1: Marinella speciosa’ Cooper, new Species.\60 er et ee ee ieee cere acne sees (20-22) Side, brachial, and pedicle views of a complete specimen, X 1, holotype, 117646; (23-26) respectively brachial, posterior, anterior, and pedicle views, X 2, of the preceding specimen. Lincolnshire formation (Hogskin member—Oligorhynchia zone), 0.4 mile east-northeast of Red Hill, 4 miles west-southwest of Thorn Hill, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. PLATE 229 FURCITELLA, HESPERINIA, HOLTEDAHLINA A. Furcitélla: scofeldy (Winchell and, Schtchert) .2 2002. WE OA A hd (1, 2) Pedicle and brachial views of a complete specimen, X 1, hypotype, 117748; (3-5) brachial, side, and pedicle views, X 2, of the same specimen. Prosser formation (Zygospira bed), St. Paul, Minn. I221 Page 841 820 837 850 878 I222 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. B. Holtedahlina sulcata (Verneutl) .......... cece cece ec ce ccc cece ceeecewesencs (6) Brachial view of a complete specimen, X 1, figured specimen, 117747a; (8) brachial interior showing cardinalia, X 14, figured specimen, 117747b. Waynesville formation, Oregonia, Ohio. (7) Pedicle interior showing dental plates and muscle scars, X 1, figured speci- men, 117744. Whitewater formation, “Devils Backbone,’ Camden, Ohio. F C. Hesperinia kirki Cooper, new SpecieS.........cececce cece eee ee cece cceeeeeesetes (9-13) Respectively pedicle, brachial, anterior, posterior, and side views of a com- plete specimen, X 3, holotype, 117626a; (14) pedicle exterior, X 3, paratype, 117626c. Tank Hill formation, ridge just east of Monument Canyon, Pioche (1°) Quad- rangle, Nev. (15) Brachial interior, X 3, showing cardinalia indistinctly, paratype, 1176274. Tank Hill formation, north end of the west side of Ely Springs Range, High- land Peak (15’) Quadrangle, Nev. D. Furcitella plicata Cooper, new SpeCieS..........c.cccccee cece cs sercesesaccsnces (16) Plasticine replica of the pedicle valve, 2, prepared from mold, paratype, 117750a; (17) impression of the pedicle interior showing muscle scars and slits representing dental plates and their anterior extensions, XX 2, counterpart to preceding mold; (18) plasticine replica of the brachial exterior, X 2, showing costellae and shell wrinkles, prepared from mold, holotype, 117750b; (19, 20) impression of the brachial interior, counterpart to the preceding mold, showing slots representing septal ridges and cardinalia, X 2, and the plasticine replica prepared from the brachial mold; (21) impression of a small pedicle interior, <2, showing muscle scars, paratype, 117751a; (22) another pedicle interior impression showing the muscle scars and strong radial shell wrinkles, X 2, paratype, 117750c; (23, 24) impression of an old brachial interior, X 2, and the plasticine replica of the interior prepared from it, X 3, showing cardinalia and muscle area, paratype, 117751b; (25, 26) another impression of the brachial interior and the plasticine replica of the interior prepared from it, X 2, paratype, II775I1Cc. Oranda formation, in field to north of road, 0.6 mile northwest of Linville Station, Broadway (15’) Quadrangle, Va. PLATE 230 MAcROCOELIA, PLATYMENA Aw Platymena plana Cooper, New SPECIES. 2: oo cejcisccleye 2, showing the cardinal process. Ridley formation (top), east side of Marshall Knobs, 5 miles south of Mur- freesboro, Murfreesboro (15’) Quadrangle, Tenn, C. Opikina subplanodorsata Cooper, new SPeCieS..........ccecessvcecscccceces gees 920 (14-18) Respectively anterior, posterior, side, brachial, and pedicle views of a complete specimen, X 1, holotype, 117840a; (19) pedicle interior showing muscle scars, X I, paratype, 117840b. Wardell formation, hill west of the west fork of the center branch of Notchy Creek, Avondale (T.V.A. 162-SW) Quadrangle, Tenn. D. Ofikimaxspeciosa Cooper; new, Species esis 's stqwoeaeeectidd. seeriretaa « Shnlociews aud 918 (20-24) Respectively pedicle, posterior, anterior, side, and brachial views of a complete specimen, X I, paratype, 117833a; (25, 26) respectively X 1 and X 2 views of a pedicle valve showing ornamentation, paratype, 117833d; (27, 28) respectively I and X 2 enlargements of the brachial interior, showing cardi- nalia and ridges, paratype, 117833c. Ridley formation (lower third), east side of Marshall Knobs, 5 miles south of Murfreesboro, Rutherford County, Tenn. PLATE 242 OPIKINA Ai.» OPeRi nS 8 Tdi tons SS tetera onserer daar Chola dacras aa temic th s omarion’ abiawiiet «-< 924 (1-5) Respectively pedicle, anterior, posterior, side, and brachial views of a com- plete specimen, X 2, figured specimen, 117849. Benbolt formation (upper), east bank of a sinkhole south of Lakeview Church, Virginia Highway 71, southeast + of the east central subquad., Moll Creek (T.V.A. 196-SE) Quadrangle, Va. B. Opikina dorsatiformis Cooper, new. SPeCICS. oi icsissccsiee ede cece vaseeaecvascor 905 (6) Exterior of the pedicle valve, <1, paratype, 117800; (7-10) respectively anterior, posterior, normal, and side views, X 2, of the preceding specimen. Edinburg formation (Cyrtonotella zone), ravine at the switch about }$ mile east of Strasburg Junction, Strasburg (15’) Quadrangle, Va. CC. Optkmannasutie C0 per, NEW, SDECICS «ach cm sissarciata scmaielereus suis otuncein ia a.ormoia kinla a. un hha O14 (11, 12) Exterior and interior of a brachial valve, 2, paratype, 117821a; (13, 13a) exterior and side view of the pedicle valve, 1, showing narrow anterior, holotype, 11782Ie. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. Di; Gpsiena bellula, Cooper, MEwiSPecwes ssh 5,5: aseunitctiasis yao/bipesevoyein cs 4sasaiajehea ayes » need ns epson 904 (14-16) Anterior, pedicle, and side views of a pedicle valve, <1, holotype, 117799a; (18) exterior of the preceding pedicle valve, X 2, showing the orna- mentation; (17, 21) posterior and exterior views of another pedicle valve, X 1, paratype, 117799b; (22) pedicle view of the preceding specimen, X 2, showing 1230 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. ornamentation; (19, 20) respectively 1 and 2 enlargements of a pedicle exterior showing wrinkles on the posterior margin, paratype, 117799c; (23, 24) respectively 1 and 2 enlargements of the brachial interior, paratype, 117799d; (25) another brachial interior showing obscure ridges, the muscle scars, and cardinalia, X 2, paratype, 117799e. Horizon and locality same as B above. PLATE 243 OPIKINA A. Opikina extensa Cooper, new SpecieSein seine os See Reh WEIR I Be (1-4, 7) Respectively pedicle, brachial, anterior, side, and posterior views of an alate form, X 1, holotype, 123268b; (5, 6) pedicle and brachial views of another specimen with outlines restored, X I, paratype, 123268a; (8) ornamentation of the pedicle valve, X 4, of the preceding specimen. Bromide formation (Pooleville member), 3 miles northeast of Springer, Carter County, Okla. B. Optkina formosa Cooper) new ‘species PUY 207 PSV Ra (9-13) Respectively pedicle, brachial, posterior, anterior, and side views of a small but complete specimen, X I, paratype, 123270a; (14, 15) pedicle and brachial views of a larger specimen, 1, paratype, 123271a; (16, 17) brachial and pedicle views of a specimen larger than the preceding two, 1, paratype, 123260b. Bromide formation (Pooleville member—Ov-oplecia gouldi zone), Spring Creek, N4 sec. 17, T. 2 S., R. 1 W., Murray County, Okla. C. Opiking formosa’ Cooper,’ new species F020 SNE OOS) A ae (18-22) Respectively posterior, anterior, side, pedicle, and brachial views of a nearly perfect specimen, <1, holotype, 123272a; (28) brachial valve, X 2, of the holotype; (27) part of the ornamentation of the pedicle valve, XX 4, near the beak of the holotype; (23) interior of the brachial valve showing thickened subperipheral rim and cardinalia, X 2, paratype, 123272b. Bromide formation (Pooleville member—Ovxoplecia gouldi zone), branch of Hickory Creek, NW3 sec. 26, T. 5 S., R. 1 E., Carter County, Okla. (24) Interior of the brachial valve showing septal ridges, X I, paratype, 117808; (25, 26) posterior and interior views of the same brachial valve showing the cardinal process and septal ridges, 2. Note accessory tooth in socket. Bromide formation (Pooleville member—O-voplecia gouldi zone), Rock Cross- ing of Hickory Creek, approximately center sec. 35, T. 5 S., R. 1 E., Carter County, Okla. PLATE 244 OPIKINA A. Opikina parciia "Cooper, Mew SPECIES o.oo ss live oe ia xe ie setae nia ore anaes gtd po (1-3, 5) Respectively side, posterior, pedicle, and anterior views of a complete specimen, 1, holotype, 117823a; (6-8) brachial, side, and pedicle views, X 2, of the preceding specimen. Benbolt formation, 5 miles northwest of Wytheville, Wythe County, Va. (4, 9) Respectively X.1 and XX 2 enlargements of the brachial view of another complete specimen, paratype, 117822a. Benbolt formation, Green Valley Church, 3 miles southwest of Lebanon, Brumley (T.V.A. 205-SE) Quadrangle, Va. B. \Opskina ‘pulchella ‘Cooper: New Species. VTi ee cs mas dee ce duoeee oe eeer eeceeeuee (10-13) Respectively posterior, side, brachial, and anterior views, X 1, of the holo- 127 Page 915 916 PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER type, 117825a; (14-16) pedicle, side, and brachial views, X 2, of the holotype. Benbolt formation (base), 0.2 mile south of the middle fork of Moccasin Creek, 14 miles due south of Hansonville, Hansonville (T.V.A. 205-SW) Quadrangle, Va. C. Opikina transversa Cooper, new Speciess).2). Fase! Cis s. lv cine alk oetadate vetoes « (17-21) Respectively posterior, pedicle, brachial, anterior, and side views of a complete specimen, <1, holotype, 117844a; (22) pedicle view of a complete specimen showing posterolateral wrinkles, 1, paratype, 98226a; (27) brachial view of a complete specimen, 2, paratype, 98226b; (28) enlargement of part of the brachial valve, < 4, of the preceding specimen; (29) pedicle exterior, X 2, paratype, 117843d. Wardell formation, Lloyd Carter’s barn, 0.8 mile by road northeast of Rye Cove School, Clinchport (T.V.A. 188-NW) Quadrangle, Va. (23) Pedicle view of a young and wide specimen, X 1, paratype, 117846a; (24) brachial view of an individual without alate points, X 1, paratype, 117846c; (25, 26) pedicle and brachial views of a young specimen showing the orna- mentation, X 2, paratype, 117846b; (30) brachial interior showing thickened rim, and cardinalia, < 2, paratype, 117846d; (31, 32) posterior half and poste- rior view of the preceding brachial interior showing the cardinal process in detail and the socket tooth well developed, X 4, paratype, 123276a. Wardell formation, second road cut west of L. McDavid’s house, 1 mile west of Rye Cove, Clinchport (T.V.A. 188-NW) Quadrangle, Va. PLATE 245 GLYPTOMENA, OPIKINA A. ‘Glyptomena. parvula. Cooper, new. SPECIES « o:i)s's:e » diets DERWEIIGGAd 0 4 ial). EL te (1) Exterior of a pedicle valve, X 1, paratype, 117855g; (2, 4) exterior and inte- rior of the preceding specimen, X 2, showing the muscle scars; (3) exterior of an imperfect brachial valve showing the ornamentation, X 2, paratype, 117855h; (5, 6) respectively X 2 and X 1 enlargements of a brachial interior, showing the septal ridges and cardinalia, holotype, 117855e; (7, 8) respectively X 2 and X 1 enlargements of the brachial interior, showing cardinalia, paratype, 117855f. Effna-Rich Valley formations, Porterfield Quarry, 5 miles east of Saltville, Maccrady (T.V.A. 218-NW) Quadrangle, Va. Bin Okina anquassa . (Sardeson),. ssaesnn oa von dteRe ets MOE. TENS d. TAD. 1 SFIS (9-12) Respectively posterior, anterior, side, and brachial views of a complete specimen, X 1, hypotype, 24206. Decorah formation (Guttenberg member—Stictopora bed), Minneapolis, Minn. Gs Opikina matutina Cooper, new Species. . 225050. 222.2020 NOIRE AY SPP (13-17) Respectively anterior, posterior, pedicle, brachial, and side views of a complete specimen, X 1, holotype, 117817a; (18, 19) pedicle and brachial views, X 2, of the holotype; (20) pedicle interior showing muscle area, X 2, paratype, 117817b. Arline formation, locality same as A above. D: Oftkinag minnesotensis (CNW) Wintthell) 2 o..660. 0s. eens ewe oo NLS SPECI (21) Exterior of the pedicle valve showing ornamentation, X 2, hypotype, 452774; (22) exterior of the pedicle valve showing wrinkles along posterior margin, X 2, hypotype, 45277c; (25) interior of the brachial valve, 2, showing muscle scars, hypotype, 45277b. Platteville formation (McGregor member), Minneapolis, Minn. (23, 24) Respectively 1 and X 2 enlargements of a pedicle interior showing the muscle scars, hypotype, 24708a; (27, 28) respectively 1 and X 2 enlarge- 1231 Page Q2I 883 gI2 913 914 1232 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. ments of a brachial interior, showing rim, septal ridges, and cardinalia, hypotype, 24708b. Platteville formation (McGregor member), Rocktown, Wis. (26) Brachial interior showing septal ridges, X 2, hypotype, 24705. Platteville formation, Ripon Center, Wis. PLATE 246 GLYPTOMENA, OPIKINA, PIONOMENA A. Glyptomena®?*bella'Coopert,) new Speciesse 00000. 205 SO aR TETY APE La a (1) Plasticine replica of the brachial exterior, X 1, paratype, 117852b; (2) exte- rior of the pedicle valve, X 1, holotype, 117852a. Murat formation, along the road and ridge 2 miles northwest of Lexington, vicinity of Whistle Creek, Lexington (15’) Quadrangle, Va. B. Opikwme puichellar Cooper, new ispecies... 1 te hb I TR PR, IS (3, 4) Impression of the pedicle interior and anterior view of same showing muscle scars and pallial marks, X 2, paratype, 117825b. Benbolt formation (base), 0.2 mile south of middle fork of Moccasin Creek, 14 miles due south of Hansonville, Hansonville (T.V.A. 205-SW) Quadrangle, Va. C. Optkine alatat Cooper, news species: VQ Yt PUD, BOO R EP RC RS (5) Interior of the brachial valve, X 2, showing septa and cardinalia, paratype, 117797b; (6) brachial view, X 1, of the holotype, 117797c; (7-11) respectively anterior, side, pedicle, posterior, and brachial views, x 2, of the holotype. Edinburg formation (lower part Nidulites zone), 100 yards south of entrance to Battlefield Crystal Caverns, on U. S. Highway 11, 1 mile north of Strasburg, Strasburg (15’) Quadrangle, Va. D. Opskinaidubia\ Cooper) new ‘Species. pic's isisidiele .b'56. oil bate Oban, & Wr eee (12) Exterior of the brachial valve, < 2, paratype, 123273a. Botetourt formation (bed 3), near Cedar Grove Church and School, 14 miles southeast of Harrisonburg, Harrisonburg (15’) Quadrangle, Va. (13) Exterior of the pedicle valve, X 2, holotype, 123274a; (14) ornamentation, 4, of the preceding specimen. Botetourt formation, 1 mile northwest of Lexington, Lexington (15’) Quad- rangle, Va. E. Pionomena ? dubia Cooper, New SPECIES.../a.\0, isdaeel ae aeeeeonees (1-4) Respectively anterior, side, pedicle, and brachial views of a complete speci- men, X 1, hypotype, 117752a; (5) brachial view of the preceding specimen en- larged, X 2, to show ornamentation; (8, 9) respectively X 2 and 1 views of the interior of a pedicle valve showing the musculature, hypotype, 117752b. 127 Page 943 931 939 875 PART II CHAZYAN AND RELATED BRACHIOPODS——-COOPER Platteville formation (McGregor member), Minneapolis, Minn. (6, 7) Respectively X1 and X 2 views of an imperfect brachial valve showing the cardinalia, hypotype, 123280. Platteville formation, 14 miles northeast of Dixon, Dixon (15’) Quadrangle, Ill. B.. Trigrammaria wilsonae Cooper, New SPeCieS.....secsceccecececcesceceuece acces (10-14) Respectively brachial, anterior, posterior, pedicle, and side views, X 1, of the holotype, 117753; (15, 16) exterior of the pedicle and brachial valves, X 2, showing ornamentation. Rockland formation (Napanee member), on New York Highway 12, on the south side of the Sugar River, 44 miles south-southeast of Port Leyden, Port Leyden (15’) Quadrangle, N. Y. C. Strophoamena, auburnensis. Fenton s « « aioe se + ssia/e hipislojaoale qe stators stews srqalpareys 96 (17-21) Respectively brachial, posterior, anterior, side, and pedicle views of a large and perfect individual, X 1, hypotype, 117702; (22) enlargement of ante- rior of pedicle valve, X 2, of same specimen. Decorah formation (Guttenberg member) (0 to 8 feet above the 8-inch blue clay on top of the Platteville), on Wisconsin Highway 81, 0.1 mile south of the Little Platte River, 2 miles northwest of Platteville, Mineral Point (30’) Quadrangle, Wis. PLATE 264 STROPHOMENA A. Strophomena anomala Cooper, Mew, SPECIES. « sisjacisjecscccccccecevessccccscsscss (1-5) Respectively posterior, anterior, pedicle, brachial, and side views, X 2, of the holotype, 117700a; (6) brachial view, X 1, of the holotype; (7-9) brachial, side, and pedicle views of a complete specimen, 1, paratype, I11770Ic; (10) brachial view, X 2, of the preceding; (11) brachial view of another complete specimen, X 2, paratype, 117701d; (12) enlargement of the brachial posterior showing ornamentation and pseudodeltidium, 4, same specimen as preceding; (13, 14) impressions of the pedicle and brachial interiors, X 2, paratype, 117701a; (15) plasticine replica of the brachial interior showing cardinalia, 2, prepared from the preceding mold. Benbolt formation (base), 0.2 mile south of the middle fork of Moccasin Creek, 14 miles due south of Hansonville, Hansonville (T.V.A. 205-SW) Quad- rangle, Va. B. Siropnomena inspeciosa Willard). 25 abe eer. Be FESS OES NS (16, 18) Respectively 1 and X 2 enlargements of the pedicle exterior, hypo- type, 117729c; (17) exterior of another pedicle valve, X 2, hypotype, 1177294; (19, 20) respectively X 1 and X 2 enlargements of the brachial exterior, hypo- type, 117729e; (21) the pedicle interior showing muscle scars, X 2, hypotype, 117729d; (22) brachial interior showing the cardinalia, X 2, hypotype, 117729b. Carters formation (O-voplecia bed), quarry 0.3 mile north of Gate City, Leeds (15’) Quadrangle, Ala. PLATE 265 FURCITELLA, PIONOMENA, STROPHOMENA As SUR RO TUERL. i OMMNL DOVE SAL ELANL V5 so chaicsa eyninkngs ola OME vic aida fal las (1, 2) Respectively X 1 and X 2 views of the interior of a large brachial valve showing the cardinalia and the forked septum, figured specimen, 117945. Liberty formation, Dodges Creek, 1} miles northwest of Oxford, Ohio. 1241 Page 875 928 927 939 044 1242 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127 Page B. Sirophomena okuhichs Coopers new, nanie sos. 22 ad. PA ae ae. 9043 (3) Exterior of an exfoliated pedicle valve, X 1, McGill Univ., holotype (no num- ber); (4) part of exfoliated exterior of preceding enlarged X 4 to show pseudo- punctae pits arranged in radial rows as in Rafinesquina. ; Leray = Chaumont formation, St. Vincent de Paul, Quebec, Canada. C.: Furcitella scofieldi (Winchell and Schuchert)... 00.60.0000... cca ec ececcceenees 878 (5) Interior of the brachial valve showing the forked septum, X 2, hypotype, 117749b; (6) interior of the pedicle valve, X 2, showing the muscle marks, hypotype, 117749a. Prosser formation (Vellamo bed), St. Paul, Minn. D. Ptonomena neumant Cooper, new SpeCieS......0cccccccscccccccceccveccccsceves 902 (7) Exterior of an imperfect brachial valve, < 2, paratype, 117756c; (9) exterior of another but smaller brachial valve, X 2, paratype, 117756d; (10) exterior of the pedicle valve, X 2, holotype, 117756a; (11) small slab, 1, showing the holotype and two paratypes, the pedicle valve to the northeast being 117756b. New Market formation (top 12 feet), 4 mile southwest of Hicksville, Williamsport (15') Quadrangle, Md. (8) Imperfect pedicle valve showing interarea, tooth, and long dental plate on observer’s left side, < 3, paratype, 117755. New Market formation $ mile north of St. Pauls Church, west of Wilson, Williamsport (15’) Quadrangle, Md. PLATE 266 PLATYMENA, RAFINESQUINA A. Rafinesquina’ planulata Cooper, new, SPECIES 3. «<6 sisisiee« .0)s)s s:sjcieesig g's wie ale dares wie 886 (1) Plasticine replica of the brachial interior, 3, paratype, 123281j; (2) impres- sion of the brachial interior, 2, showing slots produced by brachiophores, para- type, 123281e; (3, 4) impressions of two pedicle interiors on which the exte- rior ornamentation has been superimposed, X 2, paratype, 123281f, and holotype, 123281a. Oranda formation, 0.6 mile northwest of Linville Station, Broadway (15’) Quadrangle, Va. B. Ragsesquina sinclatrt Salmon. 41, ch. <2s;sram «ta eieys om ale os Capeasta- pephaew ee seins 887 (5) Impression of the pedicle interior, showing form of muscle area and slots representing thickened area bearing the teeth, <1, hypotype, 117858b; (7) anterior portion of the preceding specimen, 2, showing pseudopunctae arranged in radial rows; (6) exterior of the pedicle valve, X 1, hypotype, 117858a. Auburn chert, 4 mile east of Auburn, Elsberry (15’) Quadrangle, Mo. C.. Rafinesquinacsinclarral. Salamon. br« jar scsyoserseavei@bovers ve, 06. < Hyaiss achat aetay es Nee Ole eo 887 (8, 9) Pedicle and brachial views of a complete specimen, 1, showing alate cardinal extremities, hypotype, 117859. Barnhart formation, at the Koch Valley School on U. S. Highway .61, NE. corner SW4iSW3 sec. 6, T. 41 N., R. 6 E., 2 miles south of Barnhart, Kimms- wick (15’) Quadrangle, Mo. D, -Platymena plane Cooper, Mew SPECIES, oo) cs ieee visleis.e a nd vw ale eis we poleeictatele ale seasrele 880 (10-13) Respectively pedicle, anterior, brachial, and side views, X 1, of the para- type, 117760c; (14) a specimen seen from the pedicle side but from which the pedicle valve has been mostly stripped to show the brachial cardinalia, x 4, para- type, 117760d; (15) brachial view, X 2, of another paratype, 117760b; (16) pedicle view, X 2, of a paratype, 117760a. Arline formation (lower), 100 yards southwest of the Negro Cemetery, 4 mile northeast of Friendsville, Concord (T.V.A. 138-SW) Quadrangle, Tenn. PART II CHAZYAN AND RELATED BRACHIOPODS—COOPER 1243 Page E. Rafinesquina'trentonensis® (Conrad) i220 03 Pode RCO ee ee ees olen a sles see ale 888 (17) Pedicle views of three specimens showing the characteristic ornamentation, X 1, figured specimen, 123282. Trenton limestone, Trenton Falls, Remsen (15’) Quadrangle, N. Y. PLATE 267 CoLAPTOMENA A. Colaptomena leptostrophoidea Cooper, new SPeCi€S........cccccececcccscsscececs 890 (1) Exterior of the pedicle valve, X 1, paratype, 117763e; (2-4) pedicle, brachial, and posterior views of a complete specimen, X 1, holotype, 117761; (5) another pedicle exterior, X 1, paratype, 117762a; (6, 7) respectively 1 and X 2 en- largements of the exterior of a pedicle valve showing the ornamentation, para- type, 117763a; (8) enlargement of part of the preceding, 4, showing fine lines between the larger costellae; (9) impression of the pedicle interior show- ing the large muscle area and the pallial marks, 14, paratype, 117762c; (10) imperfect brachial interior, X 1, showing muscle area, paratype, 117763b. Martinsburg formation (part with Brongmiartella and referable to the Salona formation), on Virginia County Road 617= 0910, 0.15 mile north of Green Mount Church, Broadway (15’) Quadrangle, Va. PLATE 268 DinorTHIS, FASCIFERA, OLIGORHYNCHIA, OPIKINA, PLECTOCAMARA, PTYCHOGLYPTUS, SoWERBYELLA, STENOCAMARA, XENAMBONITES, ZYGOSPIRA CTE RUCHUMETIEMSIR Tisiavs acres ae cee ce emma are amare Regn ia tere era: c)scaug a’ eimleveaav state's 802 (1, 2) Respectively anterior and brachial views of a complete specimen, X 2, figured specimen, 117544a. Bromide formation (Mountain Lake member), 68 to 84 feet above the basal sand, Spring Creek, sec. 17, T. 2 S., R. 1 W., Murray County, Okla. B. Masciera convera ‘Cooper, EW ‘SPECIES: vais coc: ass c'ctiv cles susissin sss alece see slelee o's 999 (3-5) Respectively brachial, pedicle, and anterior views of an imperfect specimen showing slots of dental plates and size of delthyrial cavity, 2, holotype, 117303a; (6) pedicle view, X 2, of a paratype, 117303¢c. Benbolt formation, roadside 1.6 miles northeast of Heiskell, Powell Station (T.V.A. 137-SE) Quadrangle, Tenn. C: Plectocamura rotunda Cooper, Rew SBEMIES TD. oo oc cncisecccieuiels coer weeaenswesies 600 (7-11) Respectively anterior, side, pedicle, posterior, and brachial views, X 2, of the holotype, 117186a. Chatham Hill formation, 1.2 miles S. 31° E. of Sharon Springs, Burkes Garden (15’) Quadrangle, Va. DD. Piychoolypius verqmtensis. Willard), 2 iiccde theme ae sata ncsias © = oss «ae ein slaa'e'50n 2 818 (12-15) Respectively posterior, side, brachial, and pedicle views of a nearly perfect specimen, X 3, hypotype, 123285f, showing ornamentation well, chilidial plates, and simple cardinal process. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. BO PRMMRE SER: Sie or iavs tate tian cas hotel aaa tala Wale ei earerer et wiaioneinis «Siem G.0:d's eee e.<'e: 6 nigie tate ie 925 (16-19) Respectively brachial, anterior, side, and pedicle views of a large indi- vidual, X 1, figured specimen, 123292a; (20) exterior of a brachial valve having a wide hinge, <1, figured specimen, 123292c; (21) impression of the interior of the pedicle valve showing the muscle scars, <1, figured specimen, 123292d ; 1244 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. (22-24) respectively pedicle, anterior, and brachial views of a small imperfect specimen, XI, figured specimen, 123292b. Whistle Creek formation (75 feet above the Knox dolomite), on Indian Run, 4 mile northwest of Lusters Gate, Blacksburg (15’) Quadrangle, Va. F,. Xenambomtes ‘undasus Cooper, new: SPecieS 1. stam jsscaip oie wseinrars:<% ajayelp efeis crew a Sa v's (25) Interior of the brachial valve showing cardinalia, platform, and alate form of shell, X 4, paratype, 117468r; (26) anterior and inner view of the pedicle valve showing the flattened border, X 3, paratype, 117468g; (27) exterior of the pedicle valve showing peculiar fold and alate form, X 4, paratype, 117468-1; (28) exterior of the brachial valve showing ornamentation and deep sulcus, X 4, paratype, 117468m. Pratt Ferry formation, 0.2 mile southeast of Pratt Ferry, Blocton (15’) Quad- rangle, Ala. G. Zygospira elongata: Cogper;, NEW SPECIES winiay)« deheiol>yaraiziven'y wboaeonln 6 QE oe wamlalarttaharale cupid (29-32) Respectively pedicle, anterior, side, and brachial views, X 2, of the holo- type, I111375a. Lebanon formation, Readyville, Cannon County, Tenn. H. Stenocamara perplera Cooper, mew SPeCieS........ccscececcssescceecvcccsscacs (33-37) Respectively anterior, brachial, posterior, pedicle, and side views of a com- plete specimen, XI, paratype, 123289; (38-40) respectively brachial, side, and pedicle views, 2, of the same specimen. Ellett formation (55 feet above the base), Indian Run, 3 mile northwest of Lusters Gate, Blacksburg (15’) Quadrangle, Va. 1. Ghgoreytehita ‘eps TOMA IORI E SY & cf POPES hee Cece Geec atta sca cee eee ae (41-44) Respectively brachial, side, anterior, and pedicle views of a complete but exfoliated specimen, X 3, figured specimen, 118018a. Sevier = Dryden formation, 0.7 mile south of Mooney Cemetery, Bulls Gap (T.V.A. 171-SE) Quadrangle, Tenn. J. Dinonthisstransuer sas ilar digs Saas, oes ce et ae oe eee Connie elaetaeoe eres (45) Plasticine replica of the exterior of the brachial valve, 1, hypotype, 118024b; (46) plasticine replica of the exterior of an imperfect specimen, X I, hypotype, 118024a; (47) impression of the pedicle interior showing the muscle scars, I, counterpart of the preceding. Sevier formation (sandstone No. 5), 0.57 mile southwest of Rocky Branch, Kinzel Springs (T.V.A. 148-NE) Quadrangle, Tenn. PLATE 269 127 Page 815 670 603 663 398 EoPLECTODONTA, HESPERORTHIS, PAURORTHIS, PLECTORTHIS, REUSCHELLA, SOWERBYELLA A. ‘Plectarties ahesa “Coopers -new Species. io. . sk tes CYRTONOTELLA, HESPERORTHIS, PLEURORTHIS, RHYSOSTROPHIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 33 a ORTHAMBONITES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 34 ORTHAMBONITES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 35 1 ON Ha 7] [\\ ORTHAMBONITES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 36 2 se 15 ORTHAMBONITES (SEE EXPLANATION OF PLATES.) VOL. 127, PL. 37 SMITHSONIAN MISCELLANEOUS COLLECTIONS MIMELLA, ONNIELLA, ORTHAMBONITES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 38 F B rs “a Beas "ph f ; ee eats: hist pie f s A Ry UNIAN 17 Jey fi igy » 32 Ce 47 — % Se 51 G ae S TMi NOTHORTHIS, ORTHAMBONITES, TAPHRORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 39 CYRTONOTELLA, NICOLELLA, TAPHRORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 40 eT La sene) say yerla ie 31 as ERIDORTHIS, GLYPTORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 49 Wij i\\\\ 50 GLYPTORTHIS, HESPERORTHIS, ORTHAMBONITES, PRODUCTORTHIS, PTYCHOPLEURELLA, TAPHRORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 50 ATELELASMA, CYRTONOTELLA, DESMORTHIS, EREMOTOECHIA, GLYPTORTHIS, HESPERORTHIS, PTYCHOPLEURELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 51 HESPERORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 52 « \ ~ ee AOR. nr ewe! Nai nyt re at eee = ie HESPERORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 53 HESPERORTHIS (SEE EXPLANATION OF PLATES.) MITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 54 ie w 23 i 22 “8 26 HESPERORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 55 SCAPHORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 56 4 ao MULTICOSTELLA, PRODUCTORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 57 (ee By ge < g 7) ANA < Uji ‘ 14 DINORTHIS (SEE EXPLANATION OF PLATES.) VOL. 127, PL. 58 SMITHSONIAN MISCELLANEOUS COLLECTIONS DINORTHIS (SEE EXPLANATION OF PLATES.) VOL. 127, PL. 59 SMITHSONIAN MISCELLANEOUS COLLECTIONS DINORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 60 MULTICOSTELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 61 CHAULISTOMELLA, DINORTHIS, MULTICOSTELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 62 fia inh “abe A ww Ahiniw 17 MULTICOSTELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 63 CHAULISTOMELLA, MULTICOSTELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 64 Pi iN ve pe: hy Hi Wesy\ NEA Hisuiins® 19 if 20 Hil Lili CHAULISTOMELLA, MULTICOSTELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 65 CHAULISTOMELLA, DINORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 66 CHAULISTOMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL..127, PL. 67 iyi fe \ LG 7/335 Pa Ng Maja \ j LA” ei 50 Wy CUTAN SS | ; actus CHAULISTOMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 68 CAMPYLORTHIS, CHAULISTOMELLA, MULTICOSTELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 69 CAMPYLORTHIS, CHAULISTOMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 70 7h} ae X > ive Hi} | CHAULISTOMELLA, VALCOUREA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 71 LAAMUI WN Seo rik CONS rs. uw CAMERELLA, CHAULISTOMELLA, DINORTHIS, MULTICOSTELLA, PLECTORTHIS, VALCOUREA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 72 CHAULISTOMELLA, DINORTHIS, VALCOUREA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 73 VALCOUREA (SEE EXPLANATION OF PLATES. ) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 74 VALCOUREA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 75 VALCOUREA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 76 ay i CHAULISTOMELLA, VALCOUREA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 77 ——s EREMOTOECHIA, TRITOECHIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 78 ANOMALORTHIS, ATELELASMA, EREMOTOECHIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 79 ay my LAN RANA ATELELASMA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 80 ATELELASMA, KULLERVO (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 81 ATELELASMA, PLECTORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 82 ATELELASMA, CYRTONOTELLA, HESPERORTHIS, ORTHAMBONITES, PIONODEMA, PRODUCTORTHIS, PTYCHOPLEURELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 83 > DESMORTHIS, PLECTORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 84 PLECTORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 85 stg » ae oe RY Selina” PANN AN MIMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 86 aT) ca 20 MIMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL; 127, PE. 87 v Zz q I i\ ATi” MIMELLA (SEE EXPLANATION OF PLATES. ) SMITHSONIAN MISCELLANEOUS COLLECTIONS Hi il Na 1 HUH Ves Lotti MIMELLA (SEE EXPLANATION OF PLATES.) VOL. 127, PL. 88 SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 89 NY AS ANS Ws MIMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 90 MIMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 91 MIMELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 92 DOLEROIDES, MIMELLA, PLECTORTHIS, SKENIDIOIDES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 93 AN tf / ( na { HH) DOLEROIDES (SEE EXPLANATION OF PLATES.) VOL. 127, PL. 94 SMITHSONIAN MISCELLANEOUS COLLECTIONS DOLEROIDES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 95 DOLEROIDES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 96 i Mikiaie DOLEROIDES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 97 = z fi. KS “28 \7 44 SS re SKENIDIOIDES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 98 OOS \ Sone iY ae SKENIDIOIDES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 99 ANCISTRORHYNCHA, ELASMOTHYRIS, EREMOTOECHIA, GENUS & SPECIES UNDET., KULLERVO, MIMELLA, ONYCHOPLECIA, OXOPLECIA, SKENIDIOIDES, TROPIDOTHYRIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 100 ONYCHOPLECIA, OXOPLECIA, TRIPLESIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 101 OXCPLECIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 102 OXOPLECIA (SEE EXPLANATION OF PLATES.) VOL. 127, PL. 103 SMITHSONIAN MISCELLANEOUS COLLECTIONS OXOPLECIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 104 OXOPLECIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 105 gee aE OXOPLECIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 106 CAMERELLA, OXOPLECIA, PARASTROPHINA, PORAMBONITES (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 107 PORAMBONITES, SALONIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 108 TRAC 47 CAMERELLA, GLYPTORTHIS, IDIOSPIRA, OXOPLECIA, PERIMECOCOELIA, PORAMBONITES, TAPHRORTHIS (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 109 CAMERELLA, IDIOSTROPHIA, RHYSOSTROPHIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 110 CAMERELLA, LIRICAMERA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 111 CAMERELLA, PERIMECOCOELIA, STENOCAMARA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 112 er r~r ) Sill 5 f ul CAMERELLA, RHYSOSTROPHIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 113 AMY) "0 yl 21 3 MN (DP CAMERELLA, IDIOSTROPHIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 114 CAMERELLA, PERIMECOCOELIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 115 CAMERELLA, PARALLELELASMA, STENOCAMARA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 116 CAMERELLA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 117 CAMERELLA, PARASTROPHINA, PERIMECOCOELIA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL, 127, PL. 118 BREVICAMERA, CAMERELLA, PARALLELELASMA, PARASTROPHINA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS VOL. 127, PL. 119 BREVICAMERA, PARALLELELASMA, PARASTROPHINA, PERIMECOCOELIA, PROTOZYGA, STENOCAMARA (SEE EXPLANATION OF PLATES.) SMITHSONIAN MISCELLANEOUS COLLECTIONS hg oF S297 ~ 2 9 DINORTHIS, FASCIFERA, OLIGORHYNCHIA, OPIKINA, PLECTOCAMARA PTYCHOGLYPTUS, SOWERBYELLA, STENOCAMARA, XENAMBONITES, ZYGOSPIRA, (SEE EXPLANATION OF PLATES.) 269 9 1 VOL. SMITHSONIAN MISCELLANEOUS COLLECTIONS PA fed be EOPLECTODONTA, HESPERORTHIS, PAURORTHIS, PLECTORTHIS, REUSCHELLA, SOWERBYELLA (SEE EXPLANATION OF PLATES.) S: ee eal Rae Puig ® o : tii ill 3 9088 01421 = = n = z < z [e) Oo) x = = ”