Characteristic marine Jurassic fossils from the western interior of the United States.

Bibliographic Details
Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1948.
Series:	Professional paper (Geological Survey (U.S.)) ; 214-B. Shorter contributions to general geology.
Subjects:	Ammonoidea, Fossil > West (U.S.) Paleontology > Jurassic. Geology, Stratigraphic > Jurassic. Geology > West (U.S.)

by Imlay, Ralph W. (Ralph Willard), 1908-1989
Published 1948

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