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

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Bibliographic Details
Author / Creator:	Imlay, Ralph W. (Ralph Willard), 1908-1989, author.
Imprint:	Washington : United States Department of the Interior, Geological Survey, 1982.
Description:	1 online resource (iv, 44 pages, 26 unnumbered pages of plates) : illustrations, map.
Language:	English
Series:	Geological Survey professional paper ; 1232 Geological Survey professional paper ; 1232.
Subject:	Ammonoidea. Paleontology -- Jurassic. Paleontology -- West (U.S.) Ammonoidea. Jurassic Geologic Period. Paleontology. United States, West.
Format:	E-Resource U.S. Federal Government Document Book
URL for this record:	http://pi.lib.uchicago.edu/1001/cat/bib/11597926

Hidden Bibliographic Details
Other authors / contributors:	Geological Survey (U.S.), issuing body.
Notes:	Title from title screen (viewed October 14, 2014). "Marine waters invaded Montana in late Callovian time, advanced southward across Wyoming in early Oxfordian time, and persisted in Montana during late Oxfordian time." Includes bibliographical references (pages 41-42) and index.
Other form:	Print version: Imlay, Ralph W. (Ralph Willard), 1908-1989. Jurassic (Oxfordian and Late Callovian) ammonites from the western interior region of the United States
GPO item no.:	0624 (online)
Govt.docs classification:	I 19.16:1232

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