EXPLANATION OF PLATE .".. 



Cymbospondylus prlriinix Leidy. 

 From the Middle Triassic of West Ilumboldt Range, Nevada. 



Fig. 1. Posterior view of skull, no. 9950, X % 



Pr, parietal. 



Sq, squamosal. 



S7. .supratemporal. 



Qj, quadratojugal. 



Q, quadrate. 



Q.f., quadrate foramen. 



80, supraoccipital. 



Lo, lateral occipital (?). 



Fin, basioccipital. 



LEGEND FOR GUIDE PIGTTRE. 



8, basisphenoid. 



Pi, pterygoid. 



A', indeterminate (stapes?). 



Ar, articular. 



8a, surangular. 



An, angular. 



8p, splenial. 



Cn, eoronoid. 



Fitr. 2. Orbital region showing complete sclerotic ring, no. 9954, X Mi- 

 Fig. 3. Inner side of posterior end of left ranms of the mandible, no. 9913, X Mi- 

 A, articular; Cn, eoronoid; An, angular; //, hyoid : Q, quadrate. 



Fig. 4. Superior view of right articular, no. 9913, X Vs- 



[ififil 



