Journal
PALEONTOLOGICAL JOURNAL
Volume 49, Issue 3, Pages 279-292Publisher
PLEIADES PUBLISHING INC
DOI: 10.1134/S003103011503003X
Keywords
Oxemys gutta; turtles; basisphenoid; Late Mesozoic; Asia
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Funding
- Russian Scientific Foundation [14-14-00015]
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The holotype (basisphenoid) of Oxemys gutta Nessov, 1977, a problematic skull-based turtle taxon from the Khodzhakul Formation (Lower Cenomanian, Upper Cretaceous, Uzbekistan) is redescribed and its systematic position is reviewed. The literature and original morphological data on the basisphenoid complex of some Late Mesozoic turtles of Asia are discussed. A list of 14 characters of the basisphenoid complex, many of which have never been used in phylogenetic reconstructions, is provided. A comparison of O. gutta with other Late Mesozoic turtle taxa of Asia based on these characters shows that it is most similar to members of Macrobaenidae/Sinemydidae and Lindholmemydidae. The analysis of possible associations of O. gutta with shell-based turtle taxa known from the Khodzhakul Formation suggests that it most likely belongs to Macrobaenidae/Sinemydidae.
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