Gazin, C. Lewis <br/><br/>
The Geology and Vertebrete Paleontology of Upper Eocene Dtrata in the Northeasterb Part of the Wind River Basin, Wyoming 

 - Washington, D.C :   Smithsonian Institution,   1956. 
 - 35 p. :   láms. ;   18 cm. 
 - Smithsonian Miscellaneous Colections ;   v.131, n.8 .