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LIST OF THE RICHARDS SPUR (FORT SILL) TETRAPOD PALEOFAUNA Stratigraphic chart of the lower Permian (partial) Content updated April 24, 2006
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THADEOSAURUS COLCANAPI Eureptilia-Diapsida-Neodiapsida-Younginiformes
Thadeosaurus colcanapi is a Tangasaurid Younginiform of Madagascar described by R.L. Carroll (1981) on materials previously assigned to Datheosaurus by J. Piveteau (1926). It is characterized, as Hovasaurus, by the presence in the carpus of a contact between the medial centrale and the distal carpal 4, precluding the contact between the lateral centrale with the distal carpal 3, an ossified sternum and very massive humerus. Thadeosaurus and Hovasaurus are very similar, these specimens are here considered as belonging to Thadeosaurus on the basis of lower neural spine in the dorsal vertebrae, and for the absence of gastroliths. 1) Thadeosaurus: partial skeleton (GAAC0048) |