A baenid turtle shell from the Mesaverde Formation (Campanian, Late Cretaceous) of Park County, Wyoming, USA by Wu, Ka Yan, Heuck, Jared, Varriale, Frank J., Farke, Andrew

“…The likely omega-shaped femoral-anal sulcus differs from the condition in Neurankylus spp., better matching the condition seen in many (but not all) Baenodda, although only one half of the fossil preserves the sulcus, and it may lie within expected variation for Neurankylus. …”
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