Johnson, J.G. <br/><br/>
Pridolian and Early Gedinnian Age brachiopods from the Roberts Mountains Formation of Central Nevada 

 - Berkeley, CA  University of California Press  1973 
 - pp. 1-75  ilus., láms. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>BRACHIOPODA<br/>DEVONICO<br/>SILURICO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS