Olson, Storrs L., <br/><br/>
A lower Eocene frigate bird from the Green River formation of Wyoming :  (Pelecaniformes :  fregalidae) / 
United States Smithsonian Contributions to Pale Biology 
 - Washington, D.C. :  U.S. Smithsonian Contributions to Pale Biology,  1977 
 - iii, 33 p. ;  26 cm. 
 - Smithsonian contribution to pale biology ;  no. 35 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>Frigate bird--United States--Wyoming<br/>Paleontology--Eocene<br/>Paleontology--Wyoming--Lincoln County.
<br/><br/><label>Dewey Class. No.: </label>598.4309787