Jurassic (Bathonian or early Callovian) ammonites from Alaska and Montana
Series: Shorter contributions to general geology; Geological Survey professional paper -- 374-C; Professional paper (Geological Survey (U.S.)) -- 374-C.
Publisher: U.S. Govt. Print. Off.
Published: 1962
Place of publication: Washington
Language: eng
Number of pages: 32
Subjects: Ammonoidea; Stratigraphic Geology
Description: "Descriptions and illustrations of cephalopods of possible late Middel Jurassic (Bathonian) age."
Notes: Includes index.

Bibliography: p. 28-29.