PLATE XXXIII. 



Jurassic Dinosaurs. — Sauropoda. 



MOROSAUKtDvE. 



Page. 



FlG. 1. Sacrum of Morosauru/t lentus Marsh; seen from above 183 



Fig. 2. Last sacral vertebra of Morosaurus lentus; posterior view 182 



a, anterior face of centrum of first sacral vertebra; b, transverse process 

 of first vertebra; c, transverse process of second vertebra; </, transverse 

 process of third vertebra; e, transverse process of last sacral vertebra; 

 /,/,/", foramina between transverse processes of sacral vertebra; ; g, 

 surface for union with ilium; n, neural canal; its, neural spine; p, pos- 

 terior face of centrum of last sacral vertebra; 8, suture; z', posterior 

 zygapopbysis. 

 Both figures are one-fifth natural size. 

 310 





