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On the relationships of "Marmosa" formosa Shamel, 1930 (Marsupialia, Didelphidae), a phylogenetic puzzle from the chaco of northern Argentina

by: Voss, Robert S

Publication date: 2004

Usage: Attribution-NonCommercial-ShareAlike 4.0 International

Topics: Chacodelphys, Marmosa, Opossums, Phylogeny, Marsupials, Mammals, Geographical distribution, Chacodelphys -- Classification, Marmosa -- Classification, Opossums -- Argentina -- Formosa (Province) -- Classification, Opossums -- Phylogeny, Marsupials -- Argentina -- Formosa (Province) -- Classification, Mammals -- Argentina -- Formosa (Province) -- Classification, Opossums -- Gran Chaco -- Geographical distribution

Publisher: New York, NY : American Museum of Natural History

Collection: americanmuseumnaturalhistory; biodiversity

Contributor: American Museum of Natural History Library

Language: English

Rights: http://biodiversitylibrary.org/permissions

Rights-holder: American Museum of Natural History Library

Volume: no. 3442

18 p. : 26 cm

"The holotype and only known specimen of Marmosa formosa Shamel, a nominal species currently synonymized with Gracilinanus agilis Burmeister, is strikingly unlike any other known didelphid marsupial. Phylogenetic analyses based on nonmolecular characters and IRBP sequences suggest that formosa is either the sister-taxon of Thylamys (including Lestodelphys) or Monodelphis. Because neither alternative is strongly supported by the data at hand, and because including formosa in Thylamys or in Monodelphis would compromise the diagnosability of those taxa, a new genus - Chacodelphys - is proposed to contain it. Currently known only from northern Argentina, Chacodelphys formosa may be widely distributed in the Chaco and other adjacent Neotropical biomes"--P. [1]

Title from caption

"June 2, 2004."

Includes bibliographical references (p. 16-17)

Abstract: 'The holotype and only known specimen of Marmosa formosa Shamel, a nominal species currently synonymized with Gracilinanus agilis Burmeister, is strikingly unlike any other known didelphid marsupial. Phylogenetic analyses based on nonmolecular characters and IRBP sequences suggest that formosa is either the sister-taxon of Thylamys (including Lestodelphys) or Monodelphis. Because neither alternative is strongly supported by the data at hand, and because including formosa in Thylamys or in Monodelphis would compromise the diagnosability of those taxa, a new genus - Chacodelphys - is proposed to contain it. Currently known only from northern Argentina, Chacodelphys formosa may be widely distributed in the Chaco and other adjacent Neotropical biomes'--P. [1].