Imlay, Ralph W. <br/><br/>
Ammonites from the Buchia zones in northwestern California and southwestern Oregon 

 - Washington, D.C.  U.S. Geological Survey  1970 
 - pp. 1-59  láms. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AMMONOIDEA<br/>CRETACEO<br/>JURASICO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS