PLATE XXIV. 



Jurassic Dinosaurs. — Sauropoda. 



Atlaxtosaurid.k. 



Page. 

 Fig. 1. Iscliia of Broniosaurus excelsus Marsh; seen from aliove; one-twelfth 



natural size 172 



la, distal ends. 



a, acetabular surface; c, extremity; il, face for ilium; pb, face for pubis; 

 8, symphysis. 



Fig. 2. Fourth caudal vertebra of Brontosaurus excelsus; side view 171 



Fig. 3. The same vertebra ; front view 171 



Fig. i. Chevron of Brontosaurus excelsus; side view 172 



Fig. 5. The same ; front view 172 



Last four figures are one-eighth natural size. 



c, face for chevron ; h, luemal orifice; », neural canal; s, neural spine; t, 

 transverse process; z, anterior zygapophysis; z', posterior zygapophysis. 

 292 



