130 



Annals of the South African Museum. 



two exoccipitals. The foramen jugulare is bounded on the inside by 

 the exoccipital and looks as much downwards as backwai'ds. The 

 basioccipital is a shallow bone and the tubera lie very little below the 

 level of the bottom of the condyle. Between them the basioccipital 

 has a broad and shallow groove. 



Type. Skull and lower jaw. (S.A. Mus. Cat. No. 695.) 



Locality. 1 ' The Gouph." 



Horizon. Lower Beaufort Beds. (Tapinoceplialus zone.) 



DlCYNODON MEGALORHINUS (BrOOni). 



1904. Broom, Oudenodon megalorhimis. Rec. Albany Mus., i, p. 180. 



The type skull is of interest as being the first Dicyuodont in which 

 a postfrontal was clearly recognised. 



FIG. 26. Dicynodon megalorhinus (Br.). Type No. 640. Natural size. 



The bones of the upper part of the skull are clearly shown, and a 

 figure is given here for the first time. Noticeable features are the 

 long anterior extension of the parietals and the long, narrow, post- 

 f rentals. 



Of the occiput and palate but little is seen. It is interesting to 

 note, however, that the feuestra ovalis faces almost completely 

 laterally and but very little downwards ; it is rather small. The 

 sutui'e between the basispheuoid and basioccipital is clear. The basi- 

 sphenoid, although passing back to form the anterior portion of the 

 tuber, takes no part whatever in the border of the fenestra ovalis. 



