Lower Jurassic (Pliensbachian and Toarcian) ammonites from eastern Oregon and California /

Bibliographic Details
Main Author:	Imlay, Ralph W. (Ralph Willard), 1908-1989
Format:	Government Document Book
Language:	English
Published:	Washington : U.S. Govt. Print. Off, 1968.
Series:	Geological Survey professional paper ; 593-C. Geological Survey professional paper. Contributions to paleontology.
Subjects:	Ammonoidea. Paleontology > Jurassic. Paleontology > Oregon > Grant County. Paleontology > California.

Description
Physical Description:	iii, 51 pages, 20 unnumbered pages : illustrations, maps. ; 29 cm.
Bibliography:	Bibliography: pages 46-48.