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Early and middle Bajocian (middle Jurassic) ammonites from southern Alaska /

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Bibliographic Details
Main Author: Imlay, Ralph W. (Ralph Willard), 1908-1989 (Author)
Format: Government Document eBook
Language:English
Published: Washington : Department of the Interior, U.S. Geological Survey, 1984.
Series:U.S. Geological Survey professional paper ; 1322.
Subjects:
Ammonoidea.
Paleontology > Jurassic.
Paleontology > Alaska.
Jurassic Geologic Period.
Paleontology.
Alaska.
From 140 to 190 million years ago
Online Access:https://purl.fdlp.gov/GPO/gpo92670
Description
Item Description:"Studies of the early and middle Bajocian ammonites of southern Alaska provide close age determinations and correlations with Europe, Arctic Alaska, Arctic Canada, and the Pacific Coast region in general."
Physical Description:1 online resource (iv, 38 pages, 2 unnumbered pages of plates) : illustrations, maps.
Bibliography:Includes bibliographical references (page 38).