Jurassic (Bathonian and Callovian) ammonites in eastern Oregon and western Idaho /

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, 1981.
Series:	Geological Survey professional paper ; 1142.
Subjects:	From 140 to 190 million years ago Ammonoidea. Paleontology > Jurassic. Paleontology > Idaho. Paleontology > Oregon. Jurassic Geologic Period. Paleontology. Idaho. Oregon.
Online Access:	https://purl.fdlp.gov/GPO/gpo90842

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