DINOCERATA. 



Dorsal Vertebra of Dinoceras mirabile, Marsh. 



One-fourth Natural Size. Pa^e 



Fig. 1. — Second dorsal vertebra; lateral view, seen from the left, S2 



Fig. 2. — The same; superior view, ..__J ._ §2 



Fig. 3. — The same; anterior view, 82 



Fig. 4. — The same ; inferior view, -_ .. 82 



Fig. 5. — The same; j)Osterior view, 82 



