Stephenson, Lloyd William <br/><br/>
A new Upper Cretaceous rudistid from the Kemp Clay of Texas 

 - Washington, D.C.  U.S. Geological Survey  1938 
 - pp. 1-15  láms. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>CRETACEO<br/>RUDISTA
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS