Stratigraphic chart of the lower Permian (partial)
Content updated October 16, 2005
RICHARDS SPUR UNIDENTIFIED
CASEASAUR
Synapsida - Caseasauria
Above: picture of dentaries that could be assigned to the same caseasaur, on the basis of the same dentition. From Richards Spur (Dolese Quarry), Comanche Co. - Oklahoma. Lower Permian.