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Fossil Record A palaeontological open-access journal of the Museum für Naturkunde

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Foss. Rec., 20, 69-85, 2017
http://www.foss-rec.net/20/69/2017/
doi:10.5194/fr-20-69-2017
© Author(s) 2017. This work is distributed
under the Creative Commons Attribution 3.0 License.
Research article
03 Feb 2017
Turtle shell bone and osteoderm histology of Mesozoic and Cenozoic stem-trionychian Adocidae and Nanhsiungchelyidae (Cryptodira: Adocusia) from Central Asia, Mongolia, and North America
Torsten M. Scheyer et al.

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Short summary
We review shell bone microstructures of Adocidae and Nanhsiungchelyidae, two groups of extinct hide-necked turtles related to modern soft-shelled turtles (Trionychidae) and the pig-nosed turtle Carettochelys insculpta (Carettochelyidae). Adocids and nanhsiungchelyids both have a good fossil record in North America and Asia during the Cretaceous and Cenozoic. Our microstructural data supplement previously reported differences in external shell morphology between adocids and nanhsiungchelyids.
We review shell bone microstructures of Adocidae and Nanhsiungchelyidae, two groups of extinct...
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