Middle Jurassic (Bajocian and Bathonian) ammonites from northern Alaska /

An ammonite succession nearly indentical with that in northern Canada is correlated with a more varied ammonite succession in southern Alaska.

Bibliographic Details

Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989
Corporate Author:	Geological Survey (U.S.)
Format:	Government Document Book
Language:	English
Series:	Geological Survey professional paper ; 854.
Subjects:	Ammonoidea. Paleontology > Jurassic. Paleontology > Alaska.