CLASSIFICATIOX OP THE THKRI0D0:NTIA. 



95 



long nairow girder which in the Theriodonts extends from the 

 basipteiygoid processes to the flanges of the pterygoids, and it is 

 therefore probable that the Dioynodonts separated from the 

 Theriodonts before the establishment of this feature — that is, at 

 about the same time as the Deinocephalia. At the same time, in 



Text-figure 29. 



Palate of Endothiodon ? microps Broom. 



Drawn from K. 4044, B.M.N.H. ; the quadrates, quadrato-jugals and jugals, 

 and quadrate rami of tlie pterygoids, from other material. 



the Dicynodonts as in the Deinocephalia and all other S. African 

 Anomodontia in which the facts are known, the descending 

 flanges of the pterygoids lie well in advance of the basipterygoid 

 processes, a position which is marlvedly different from that fonnd 



