PLATE CXXX 



Skull of Menodus trigonoceras (Cotype) and a Radius Doubtfully Referred 



Plate prepared under the direction of Professor Cope. One-third natural- size. (See pp. 214, 529) 



Ai, A2, Am. Mus. 6356, cotype. Horsetail Creek, northeastern Colorado, Chadron formation. This skull shows the elongate, 



distaUy expanded nasals and the trihedral, outward-directed horns of Menodus. 

 Bi, Bj, Left radius, front and distal views of the lower portion. The reference of this fragment to M. trigonoceras is doubtful. 



