DINOCERATA. 



Lower jaw and teeth of Tinoceuas pugnax, Marsh. p.^.,,, 



Fig. 1. — Lower jaw; lateral view, seou from tlie k'ft, one-third natural size, 35 



i — ^Incisor tooth. 



e — Canine tooth. 



d — Diastema. 



y — Mental foramen. 



«/) — Process for protection of canine tusk. 



a —Angle of the jaw. 



cd — Condyle. 



cr — Coronoid process. 



Fig. 2. — Lower molars ; superior view, natural size, 41 



Fig. 3. — The same; lateral view, natural size, 41 



Iptn — First premolar 

 Im — First molar. 



