PLATE XCVIII 



Type Skull of Beontops robustus 



Plate prepared under the direction of Professor Marsh. One-fourth natural size. (See p. 494, also Pis. XCVI and XCVII) 



Yale Mus. 12048, Dry Creek, 5 miles northeast of Chadron, Nebr. (J. B. Hatcher), Chadron formation, probably upper levels. 

 The top view shows well the extreme breadth of the skull as compared with that of B. dispar (PI. XCI). In Brontoiherium 

 the skuU top is much longer, the occipital vertex is produced backward, and there is little or no constriction of the vertex 

 in front of the occiput. 



