PLATE CXXVII 



Type Jaw of Menodus torvus 



Plate prepared under the direction of Professor Cope. One-half natural size. (See p. 210, 527, also Pis. CXXV, CLVIII, and 



CLIX) 



Type jaw of Symborodon tortus Cope and genotype of Symborodon Cope (Am. Mus. 6365), Horsetail Creek, northeastern Colorado, 



Chadron formation. 

 Cope recognized the relationship of this animal to the species named by him "Symborodon trigonoceras." This jaw is a little smaller 



than in the tj-pical M. trigonoceras. 



