PLATE XXX 



Described 

 on Page 



Do CO don victor (Marsh). 90 



Fig. I. Right lower jaw with C, P1.4, and Mj.g, internal view. X 4^^ 

 diam. Type. Y.P.M. No. 11826. 



Fig. 2. Same, X-ray. Natural size. 



Fig. 3. Left lower jaw with P3.4 and Mj.g, external view. X 5 diam. U.S. 

 N.M. No. 2707. Photograph from the United States National Mu- 

 seum. 



Docodon crasstis ( M arsh ) . 94 



Fig. 4. Right lower jaw with C, P3.4, and Mj.^, external view. X 4 diam. 

 Type. U.S. N.M. No. 2130. Photograph from the United States Na- 

 tional Museum. 



Docodon sp. 



Fig. 5. Left lower jaw with six cheek teeth, external view. Specimen from 

 Garden Park, Colorado. X 5 diam. U.S. N.M. No. 2717. Photograph 

 from the United States National Museum. 



230 



