Stratigraphic chart of the lower Permian (partial)
Content updated October 16, 2005
SULLIVAN ET AL. RICHARDS SPUR
NEW DISSOROPHOID
Temnospondyli-Dissorophoidea
Above: pictures of a premaxilla that has the same dentition of the above maxilla fragment and is also sculptured in the same way. From Richards Spur (Dolese Q.), Comanche Co. - Oklahoma. Lower Permian.