342 



Annals of the South African Museum. 



palatine 

 tooth 







.* ' 



overhanging roof 



to 



Lost 



a con- 



5 



the side of the snout behind the large nostril. A stout suborbital 

 process articulates with the jugal and meets the anterior end of 

 the huge squamosal. On the palate the maxilla is overlapped by 

 the premaxilla, and only forms a small part of the roof of the 



mouth, though each max- 

 illa forms about one-third 

 of the margin of the palate. 

 Posteriorly the maxilla 

 meets the palatine, and 

 much of it is covered by 

 the jugal. 



The nasal is compara- 

 tively short. It forms 

 an 



the nostril, and 

 siderable part of the pos- 

 terior wall. It meets its 

 neighbour only for a very 

 short distance near the 

 frontal bone, the two 

 nasals being nearly com- 

 pletely separated by the 

 internasal process of the 

 premaxilla. Above and a 

 little behind the nostril 

 there is a well-marked 

 bony thickening slightly 

 exaggerated in Fig. 1. 



On the posterior wall 

 of the nostril there is a 

 small bone which appears 

 to be quite distinct from 

 both the maxilla and the 

 nasal, and which is evi- 



Showing appearances regarded by Seeley as dently a small septomax- 

 teeth. By the writer these are believed to 

 be merely irregularities on the surface of 

 the bones. 



tooth 







el broker, edge 

 of the jaw. 



FIG. 3. View of Front of Palate. Nat. size. 



illary. Hitherto a septo- 

 maxillary has not been 

 detected in any Anomo- 

 dont, though it is known in all the other groups of mammal-like 

 reptiles Cynodontia, Therocephalia, Dinocephalia, Dromasauria, 

 and Pelycosauria as well as in the Cotylosaurian suborders 

 Pareiasauria and Procolophonia and in the Monotremes. 



