Bucher, Hugo <br/><br/>
Ammonoids of the Shoshonensis zone (Middle Anisian, Middle Triassic) from northwestern Nevada (USA) 

 - Wien  Geologische Bundesanstalt  mayo 1992 
 - pp. 425-465 
<br/><br/><label>ISSN: </label>0016-7801 
<br/><br/><label>Subjects--Topical Terms: </label><br/>AMMONOIDEA<br/>PALEONTOLOGÍA<br/>TRIASICO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>ESTADOS UNIDOS<br/>NEVADA