Tozer, E.T. <br/><br/>
The Trias and its ammonoids: the evolution of a time scale 

 - Ontario  Geological Survey of Canada  1984 
 - 171 p.  ilus. 
 - Miscellaneous Report  n.35 .
<br/><br/><label>Subjects--Topical Terms: </label><br/>AMMONOIDEA<br/>PALEONTOLOGÍA<br/>TRIASICO
<br/><br/><label>Subjects--Geographic Terms: </label><br/>CANADA
<br/><br/><label>Universal Decimal Class. No.: </label>551.763/T77