Imlay, Ralph W.  1908- <br/><br/>
Stratigraphic distribution and zonation of Jurassic (Callovian) ammonites in southern Alaska / 
by Ralph W. Imlay. 
 - Washington:   United States Government Printing Office,   1975.  
 - iii, 28 p., 6 plates :  ill., maps, tables ;  29 cm. 
 -  836 .
<br/><br/>Includes bibliographical references (p. 25-26) and index (p. 27-28). 
<br/><br/> Studies of callovian ammonites from southern Alaska provide correlations with lower and middle callovian ammonite zones of Europe. 
<br/><br/><label>Subjects--Topical Terms: </label><br/>Geology, Stratigraphic--Jurassic<br/>Ammonoidea--Alaska<br/>Geology--Alaska
<br/><br/><label>Dewey Class. No.: </label>564.5