Callovian (Jurassic) ammonites from the United States and Alaska
By: by Ralph W. Imlay.
Series: Geological Survey professional paper -- 249
Publisher: U.S. Govt. Print. Off.
Published: 1953
Place of publication: Washington
Language: eng
Number of pages: 112
Subjects: Ammonoidea -- West (U.S.); Ammonoidea -- Alaska.; Paleontology -- West (U.S.) -- Jurassic.; Paleontology -- Alaska -- Jurassic.; Cephalopoda, Fossil -- West (U.S.); Cephalopoda, Fossil -- Alaska.
Notes: Issued in two parts, each with a special title page.

Four folded leaves of tables inserted within text.

"Descriptions and illustrations of cephalopods from western interior United States, and from Alaska Peninsula and Cook Inlet regions, Alaska."

Includes bibliographical references and indexes.
Table of contents: value: Pt. l. Western interior United States.; value: Pt. 2. Alaska Peninsula and Cook Inlet regions.