Emry, Robert J. <br/><br/>
Stratigraphy and preliminary biostratigraphy of the Flagstaff Rim area, Natrona County, Wyoming / 
by Robert J. Emry 
 - City of Washington :  Smithsonian Institution Press,  1973 
 - iii, 43 p. :  ill. ;  27 cm. 
 - Smithsonian contributions to paleobiology ; no.18. .
<br/><br/>Bibliography: p. 41-43. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Oligocene<br/>Vertebrates, Fossil--Wyoming--Natrona County<br/>Geology--Wyoming--Natrona County