222 



DINOCERATA. 



This specimen consists of a skull, and portions of the skeleton. 

 The geological horizon of this species is in the Dinoceras beds of the 

 Middle P^ocene. 



The type specimen is preserved in the Princeton Museum. 



Uiiitatlieriuiii sea;iie, Marsh. 



Woodcuts: 41, 42, p. 39; 101, 102, p. 83; and 199, 200, below. 



Fir, 2U0 



-*«*^^^^ 



FiGUBE lay. — il.ixillaiy protuberances of Uinlatherium seijm:. Marsh (Xu. 1194); seen frcjm above 

 FiGUKE 200. — The same specimen; seen from in front. 

 to', maxillary protuberance ; n. Das?,l bone. 



Both figure.? are one-fourth natural size 



Marsh, Fifth Aimual Report of the U. S. Geological Survej-, (figures from the present 

 volume, viz:) figs. 78, 79, p. 276, 1884. 



The maxillarv protuberances of the skull of this specimen are 

 peculiar for their robust form. They are connected by a well developed 

 transverse ridge. The parietal protuberances are massive, and somewhat 

 club-shaped, an-d present a ridge in front, as in Dinoceras imrabile and 

 Tinoceras ingens, evidently formed by the frontal bone rising nearly to 

 the top of the protuljeraiues. 



The type specimen (number 11!:)4) of this species was collected by 

 Messrs. S. Smith and J. W. Chew, east of Fort Bridger, Wyoming, in 

 October, 1873. 



The remains of this species consist of a lower jaw, and other parts of 

 lhe skeleton. 



The geological horizon of this species is in the Dinoceras beds of the 

 Middle Eocene. 



The known remains of this species are preserved in Yale College 

 l^fiiseum. 



