FIG. I02.Pareiosaurus Bairn. Fossil skeleton from the Permian of 

 South Africa. 



FIG. 103. Skull of Galesaurus, from the Permian 



of South Africa. 



A, From side ; B, from below ; C, from above ; 

 Z>, back tooth. 



FlG. 104. Skull of Tritylodon 

 from below. 



