
is ues Cee See e-—~St—‘—é~™:;F 7 
PLATE X. 
PERMIAN VERTEBRATA. ERYOPS : 
Eryops megacephalus Cope, 1878. Complete skull, superior view, four-sevenths natural size. 
Type specimen, Amer. Mus. No. 4189, Cope Coll. Lower Permian, Wichita 
basin, Texas. 

