Eastman. — Mylostoma. 



PLATE 4. 



Lower Dentition of Dinomylostoma. 



Figs. 22, 23. External aspect of right and left mandibles of Dinomylostoma beecheri 

 Eastman. Portage beds ; Mt. Morris, New York. Original in the 

 Peabody Museum of Yale University. Natural size. 





