Caninemys, a new side-necked turtle ‪(‬Pelomedusoides, Podocnemididae‪)‬ from the Miocene of Brazil. (American Museum novitates, no. 3639)

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dc.contributor.authorMeylan, Peter A. (Peter Andre)
dc.contributor.authorGaffney, Eugene S.
dc.contributor.authorCampos, Diógenes de Almeida.
dc.date.accessioned2009-04-03T13:16:23Z
dc.date.available2009-04-03T13:16:23Z
dc.date.issued2009
dc.description26 p. : ill., map ; 26 cm. "March 31, 2009." Includes bibliographical references (p. 21-23).en
dc.description.abstractA new genus and species of podocnemidid pleurodire, Caninemys tridentata, is described on the basis of a skull collected by L.I. Price in 1962 from the late Miocene of Acre, Brazil. It is unique among podocnemidids ‪(‬and all other turtles‪)‬ in having greatly inflated maxillae, each with a ventral, toothlike process. Along with a midline process of the premaxillae, these processes form a tridentate condition in the upper triturating surface, also unique among podocnemidids but comparable to the condition in the kinosternid Claudius. This skull has previously been identified as the shell-based genus Stupendemys, but there are no associations supporting this assignment. The type specimens are separated by over 2000 km, and other large podocnemidid taxa are known from this time and region. Although relatively large with a condylobasal skull length of about 17 cm, Caninemys was probably about half the size of Stupendemys. Phylogenetic analysis of 63 skeletal characters provides evidence that this new taxon nests within the family Podocnemididae as follows: ‪(‬Bauruemys ‪(‬“Roxochelys” ‪(‬Podocnemis ‪(‬Caninemys ‪(‬Dacquemys ‪(‬‪(‬Erymnochelys, Peltocephalus‪)‬ ‪(‬Neochelys ‪(‬Shweboemys, Stereogenys‪)‬‪)‬‪)‬‪)‬‪)‬‪)‬‪)‬‪)‬.en
dc.description.sponsorshipPublished by the American Museum of Natural History, New York, NY.en
dc.format.extent5954653 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5958
dc.language.isoen_USen
dc.relation.ispartofseriesAmerican Museum novitates, no. 3639.en
dc.subjectCaninemys tridentata.en
dc.subjectTurtles, Fossil.en
dc.subjectCaninemys.en
dc.subjectBrazil.en
dc.subjectAcre Region (Brazil).en
dc.titleCaninemys, a new side-necked turtle ‪(‬Pelomedusoides, Podocnemididae‪)‬ from the Miocene of Brazil. (American Museum novitates, no. 3639)en
dc.title.alternativeCaninemys, Miocene side-necked turtle.en
dc.typeBooken

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