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The phylogenetic relationships of soft-shelled turtles (family Trionychidae). Bulletin of the AMNH ; v. 186, article 1

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dc.contributor.author Meylan, Peter A. (Peter Andre) en_US
dc.date.accessioned 2005-10-06T14:41:54Z
dc.date.available 2005-10-06T14:41:54Z
dc.date.issued 1987 en_US
dc.identifier.uri http://hdl.handle.net/2246/972
dc.description 101 p. : ill. ; 26 cm. en_US
dc.description Includes bibliographical references (p. 96-101). en_US
dc.description.abstract "Phylogenetic analysis of 113 characters of the osteology of the 22 living species of trionychid turtles and representatives of all other living turtle families, provides abundant evidence on the relationships of soft-shelled turtles to other turtles and on the interrelationships within the family. These data suggest that the family Trionychidae shares a unique common ancestor with the Dermatemydidae, Kinosternidae, and Carettochelyidae, and that the Kinosternidae share a unique common ancestor with the Trionychidae and Carettochelyidae. Furthermore, it appears that the staurotypine kinosternids are most closely related to the Trionychidae and Carettochelyidae. Carettochelyids and trionychids share numerous unique features and clearly constitute a monophyletic group. Within the Trionychidae, the subfamilies Cyclanorbinae and Trionychinae are recognized as monophyletic clades. Recognition of three cyclanorbine genera, Cycloderma, Cyclanorbis, and Lissemys, is warranted. Within the Trionychinae, four distinct clades are recognized. The Trionyx cartilagineus group includes Chitra indica and Pelochelys bibroni, on the basis of the unique location of the foramen posterior canalis carotici interni, and features of the trigeminal region. The North American group includes T. triunguis, T. euphraticus, T. swinhoei, T. ferox, T. spiniferus, and T. muticus, and can be recognized by the presence of eight or fewer neurals (first and second are fused), deeply emarginate prefrontals, and a large contribution by the parietal to the processus trochlearis oticum. The Indian group includes four species: T. gangeticus, T. hurum, T. leithii, and T. nigricans; all exhibit a free first neural, five plastral callosities, and intermediately extended epiplastra. Lastly, the T. steindachneri group, which includes T. steindachneri, T. sinensis, and T. subplanus, is diagnosed by a descending spine of the opisthotic that divides the fenestra postotica in most specimens. Two equally parsimonious arrangements of the Trionychinae differ in the placement of the North American clade. In one, this clade is the sister group of the T. cartilagineus clade; in the other, it is the sister group of the T. steindachneri clade. In both, the Indian group is paraphyletic and gives rise to the T. steindachneri clade. A revised classification of the family Trionychidae is provided. The use of 2 subfamilies, 6 tribes, and 14 genera is recommended. This expanded taxonomy will more completely reflect the hierarchical relationships that reflect recency of common ancestry as determined by the cladistic analyses"--P. 4. en_US
dc.format.extent 21482101 bytes
dc.format.mimetype application/pdf
dc.language eng en_US
dc.language.iso en_US
dc.publisher [New York] : American Museum of Natural History en_US
dc.relation.ispartofseries Bulletin of the American Museum of Natural History ; v. 186, article 1 en_US
dc.subject.lcc QH1 .A4 vol.186, art.1, 1987 en_US
dc.subject.lcsh Soft-shelled turtles -- Phylogeny. en_US
dc.subject.lcsh Soft-shelled turtles en_US
dc.subject.lcsh Turtles -- Phylogeny. en_US
dc.subject.lcsh Turtles en_US
dc.title The phylogenetic relationships of soft-shelled turtles (family Trionychidae). Bulletin of the AMNH ; v. 186, article 1 en_US
dc.title.alternative Trionychidae 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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