Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States /

Bibliographic Details
Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989 (Author)
Format:	Government Document eBook
Language:	English
Published:	Washington : United States Department of the Interior, Geological Survey, 1982.
Series:	Geological Survey professional paper ; 1232.
Subjects:	Ammonoidea. Paleontology > Jurassic. Paleontology > West (U.S.) Jurassic Geologic Period. Paleontology. United States, West. From 140 to 190 million years ago
Online Access:	https://purl.fdlp.gov/GPO/gpo92531

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