Zangerlia ukhaachelys, new species, a nanhsiungchelyid turtle from the late Cretaceous of Ukhaa Tolgod, Mongolia. American Museum novitates ; no. 3481

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dc.contributor.authorJoyce, Walter G.
dc.contributor.authorNorell, Mark.
dc.date.accessioned2006-01-12T17:56:40Z
dc.date.available2006-01-12T17:56:40Z
dc.date.issued2005
dc.description19 p. : ill. ; 26 cm.en
dc.descriptionIncludes bibliographical references (p. 15-16).en
dc.description.abstractThe late Cretaceous continental deposits of Ukhaa Tolgod, Mongolia, have yielded remains of a new nanhsiungchelyid turtle, Zangerlia ukhaachelys, n.sp. This taxon is based on a single individual that consists of a partial cranium, representatives of all peripherals, an almost complete plastron, and limb fragments. Zangerlia ukhaachelys is diagnosed as a new taxon by the presence of an anteromedial process of the hyoplastron that reduces the typical contact of the entoplastron with the epiplastron. Phylogenetic analysis firmly places Zangerlia ukhaachelys as sister to Zangerlia testudinimorpha and Zangerlia neimongolensis within Nanhsiungchelyidae and confirms the close phylogenetic relationships between Nanhsiungchelys wuchingensis and Anomalochelys angulata and among all North American representatives of Basilemys. In addition, there is modest support that all Asian representatives of Nanhsiungchelyidae form a monophyletic clade, which is primarily diagnosed by a deep, triangular nuchal notch. From a biogeographic standpoint, it is evident that the late Cretaceous faunas of Asia and North America are closely related; however, phylogenetic considerations demonstrate that faunal exchange was limited for the Nanhsiungchelyidae.en
dc.format.extent609660 bytes
dc.format.mimetypeapplication/pdf
dc.identifier.urihttp://hdl.handle.net/2246/5672
dc.language.isoen_USen
dc.publisherNew York, NY : American Museum of Natural Historyen
dc.relation.ispartofseriesAmerican Museum novitates ; no. 3481en
dc.subject.lccQL1 .A436 no.3481 2005en
dc.subject.lcshZangerlia ukhaachelys.en
dc.subject.lcshTurtles, Fossil -- Mongolia -- Ukhaa Tolgod.en
dc.subject.lcshReptiles, Fossil -- Mongolia -- Ukhaa Tolgod.en
dc.subject.lcshPaleontology -- Cretaceous -- Mongolia -- Ukhaa Tolgod.en
dc.subject.lcshPaleontology -- Mongolia -- Ukhaa Tolgod.en
dc.subject.lcshTurtles -- Phylogeny.en
dc.subject.lcshTurtles -- Dispersal.en
dc.titleZangerlia ukhaachelys, new species, a nanhsiungchelyid turtle from the late Cretaceous of Ukhaa Tolgod, Mongolia. American Museum novitates ; no. 3481en
dc.title.alternativeLate Cretaceous turtle.en
dc.typetexten

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