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Ammonites of early cretaceous age (Valanginian and Hauterivian) from the Pacific coast states.

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"The ammonite succession provides correlations within the Pacific Coast States and with other areas.

Bibliographic Details
Main Author: Imlay, Ralph W. (Ralph Willard), 1908-1989
Format: Government Document Book
Language:English
Published: Washington : U.S. Govt. Print. Off, 1960.
Series:Professional paper (Geological Survey (U.S.)) ; 334-F.
Shorter contributions to general geology.
Subjects:
Ammonoidea.
Geology, Stratigraphic > Cretaceous.
Paleontology > Cretaceous.
Paleontology > Pacific Coast (U.S.)
Description
Summary:"The ammonite succession provides correlations within the Pacific Coast States and with other areas.
Physical Description:167-228 pages : plates. ; 29 cm.
Bibliography:Includes bibliographical references and index.