Department of the Interior 



Ray Lyman Wilbur, Secretary 



U. S. GEOLOGICAL SURVEY 

 George Otis Smith, Director 







Monograph 55 



THE TITANOTHERES OF ANCIENT WYOMING, 

 DAKOTA, AND NEBRASKA 



BY 



HENRY FAIRFIELD OSBORN 



VOLUME 2 



DOCUMENTS DEPARTMENT 

 RECE/VED 



JAM 2 m? 



Wilbui Cross Library 

 Unzversity of Ccnnecticut 



UNITED STATES 



GOVERNMENT PRINTING OFFICE 



WASHINGTON : 1929 



