The carpus of Eryops and the structure of the primitive chiropterygium. Bulletin of the AMNH ; v. 48, article 10.

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dc.contributor.author Gregory, William K. (William King), 1876- en_US
dc.contributor.author Miner, Roy Waldo, 1875-1955. en_US
dc.contributor.author Noble, Gladwyn Kingsley, 1894-1940. en_US
dc.date.accessioned 2005-10-06T15:12:55Z
dc.date.available 2005-10-06T15:12:55Z
dc.date.issued 1923 en_US
dc.identifier.uri http://hdl.handle.net/2246/1304
dc.description p. 279-288 : ill. ; 24 cm. en_US
dc.description Includes bibliographical references (p. 288). en_US
dc.description.abstract "(One) Eryops had only four digits in the manus. (2) Eryops possessed a well-developed prepollex. (3) The carpus (as well as the tarsus) consists of two moieties; the radius (tibia) moiety, embracing the prepollex (prehallux) and carpal elements, forming the first preaxial ray, and the ulna (fibula) moiety, including the digits and their carpals, converging toward the ulna (fibula). The distinctness of these two moieties is further demonstrated by the subdivisions of the carpal (or tarsal) musculature. (4) The pectoral appendage of Eryops is readily comparable with the pectoral fin of the rhipidistian crossopterygians. The distinctness of the two primary series of carpal elements even in these forms is obvious. (5) All known Amphibia, recent and fossil, possess only four digits in the manus, but embryological and indirect palaeontological evidence allows us to infer that the most primitive Amphibia had a prepollex, five digits, and a postminimus in the hand; a prehallux, five digits, and a postminimus in the foot. (6) The primitive chiropterygium was therefore at least seven-rayed in both the manus and pes, but with a tendency toward a reduction in the two marginal rays, which has proceeded furthest in the last postaxial ray. (7) The carpus of Eryops and the primitive chiropterygium possessed three medialia and one centrale, as well as the radiale, intermedium, ulnare and carpalia. (8) The phalangeal formula of Eryops was only 2-2-3-2 in the manus"--P. 287-288. en_US
dc.format.extent 938099 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher New York : Published by order of the Trustees, American Museum of Natural History en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 48, article 10. en_US
dc.subject.lcc QH1 .A4 vol.48, art.10, 1923 en_US
dc.subject.lcsh Eryops -- Anatomy. en_US
dc.subject.lcsh Carpus (Animal anatomy) en_US
dc.subject.lcsh Paleontology -- Permian. en_US
dc.subject.lcsh Amphibians -- Evolution. en_US
dc.title The carpus of Eryops and the structure of the primitive chiropterygium. Bulletin of the AMNH ; v. 48, article 10. en_US
dc.type text en_US

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  • Bulletin of the American Museum of Natural History
    The Bulletin, published continuously since 1881, consists of longer monographic volumes in the field of natural sciences relating to zoology, paleontology, and geology. Current numbers are published at irregular intervals. The Bulletin was originally a place to publish short papers, while longer works appeared in the Memoirs. However, in the 1920s, the Memoirs ceased and the Bulletin series began publishing longer papers. A new series, the Novitates , published short papers describing new forms.

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