LIST OF THE RICHARDS SPUR (FORT SILL) TETRAPOD PALEOFAUNA
Stratigraphic chart of the lower Permian (partial)
Content updated January 23, 2006
RICHARDS SPUR DIAPSID ARAEOSCELID?
Eureptilia-Diapsida-Araeoscelidae
Above: pictures of a Pterygoid, in ventral view, that could belong to an araeoscelid diapsid for the presence of an anterolaterally directed transverse flange, this flange, as in Petrolacosaurus is covered by a large number of irregularly arranged teeth of various sizes, contrary to Petrolacosaurus, no other teeth or denticles are present on the rest of the ventral surface of the bone. From Richards Spur (Dolese Quarry), Comanche Co. Oklahoma. Lower Permian
Abbreviations: sse, sutural surface for ectopterygoid