186 



EEPTILTA 



CLASS III 



directed internal nares are scarcely if at all covered by a secondary develop- 

 raent of the palatine plates. The mandible is without a coronoid process, and 

 the rami are fused at the Symphysis. Their oral 

 borders are sharp, and were probably once encased 

 in hörn. 



Pmx 



Fig. 291. 



Dieytiodon pardic&ps, Owen. Karoo Formation ; Fort Beaufort, Cape 

 Colony. Palatal aspect of skull, 1/4. ho, Basioccipital ; c, Maxillary tusk 

 (fractured) ; ju, Jugal ; mx, Maxiila ; 'pmx, Preraaxilla ; pl, Palatine ; pf, 

 Pterygoid ; (ju, Quadrate (after Owen). 



Fig. 292. 



Dicynodon pardiceps, Owen. 

 Anterior aspect of hnmerus, 1/4- 

 b, Delto-pectoralridge ; c, Entepi- 

 condylar foranien (after Owen). 



The scapula is a very long bone, similar to that of Monotreme mammals. 

 It bears an acromial process and is attached by its proximal end to the cora- 

 coid and epicoracoid. The humerus 

 is short and excessively stout, with 

 an entepicondylar foramen ; ulna 



Etirycnrpus oivcni, Seeley. Karoo 

 Formation ; Schneebergkette, Cape 

 Colony. Left fore-limb with Impression 

 of dermal covering, 1/3 (after Owen). 



Fig. 294. 

 Flatupodosaurus robnstus, Owen. Karoo Forma- 

 tion ; Cape Colony. Ventral aspect of sacrum and 

 right half of pelvis. ü, Ilium ; isch, Ischium ; 

 0, Obturator foramen; pu, Pubis ; . si— §5, Sacral 

 vertebrae. ^.J 



and radius are separated. In the pelvic arch the three elements of each side 

 are fused into an innominate bone which joins its fellow in a median 



