Fig. 41. Theromorph skull: Casea broilii Williston, from above. Natural size. 



Fig. 42. Casea broilii Williston: A, skull, 

 from the side; B, left mandible of same, from 

 inner side; C, skull, from below; D, from 

 behind. Three fifths natural size. /)w, pre- 

 maxilla; w, maxilla; po, postorbital; j, 

 jugal; d, dentary; sa, surangular; ang, an- 

 gular; sp, splenial; art, articular; pa, pre- 

 articular; c, coronoid; poc, paroccipital; pa, 

 palatine; bs, basisphenoid; bo, basioccipital; 

 pt, pterygoid; q, quadrate; st, stapes; eo, 

 exoccipital; so, supraoccipital; ds, dermo- 

 supraoccipital. 



51 



