222 



REPTILIA. 



FIG. 137. 



Notosuchus terrestris ; restoration of skull from the superior (A) and right lateral 

 (B) aspects, one-half nat. size. Cretaceous; Neuquen, Argentina, a.o., 

 antorbital vacuity; ag., angular; art., articular; d, dentary; ex.occ., exoc- 

 cipital; fr., frontal; ju., jugal ; la., lachrymal; mx., maxilla; na., nasal; 

 orb., orbit; pa., parietal; pb., palpebral; pmx., premaxilla; prf., prefrontal; 

 ptf., postfrontal ; pto., postorbital; q.j., quadra to-j ugal ; qu., quadrate; 

 s.ag. , surangular; s.occ., supraoccipital ; sq., squamosal; v, vacuity. 



