23-1 



REPTILIA 



CLASS III 



hinder pair, humerus of equal 

 length with the femur, thorax 

 proportionally large. Scapula 



Fig. 336. 



Brontosayrus excclsus, Marsh. Upper Jura 

 Wyoming. A, Posterior aspect of sixth 

 cervical vertebra. B, Lateral aspect of 

 dorsal vertebra, i/i"- Lettering as in Fig. 

 334 (after Marsh). 



expanded at proximal end, 

 coracoid elongate and straight 

 at articular border. Centra of 



