A new member of the family Iniopterygidae from the Excello Shale (Carbondale Formation, Westphalian lower D, Pennsylvanian) of the Bethel Quarry, southern Pike County, Indiana, is described. This taxon is remarkable for its dorsoventrally flattened body habitus and probably (functionally) correlated enormous size of the pterygopodia, and for orbits that face dorsolaterad. The neurocranium is provided with very prominent nasal capsules, and the pelvic fins consist of a few very short and stout radials. Cervifurca nasuta was probably a member of the mobile benthos

Includes bibliographical references (p. 23-24)

A new member of the family Iniopterygidae from the Excello Shale (Carbondale Formation, Westphalian lower D, Pennsylvanian) of the Bethel Quarry, southern Pike County, Indiana, is described. This taxon is remarkable for its dorsoventrally flattened body habitus and probably (functionally) correlated enormous size of the pterygopodia, and for orbits that face dorsolaterad. The neurocranium is provided with very prominent nasal capsules, and the pelvic fins consist of a few very short and stout radials. Cervifurca nasuta was probably a member of the mobile benthos

Fieldiana series has been published as Geological Series by Field Columbian Museum (1895-1909) and Field Museum of Natural History (1909-1943), and as Fieldiana: Geology by Chicago Natural History Museum (1945-1966) and Field Museum of Natural History (1966-1978). Fieldiana Geology New Series No. 1 began June 29, 1979

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