The molluscan genus siphonalia of the Pacific coast Tertiary.

Bibliographic Details

Main Author:	Ruth, John William, 1911-
Format:	Book
Language:	English
Published:	Berkeley, CA : University of California Press, 1942.
Series:	University of California publications in geological sciences ; v. 26, no. 3.
Subjects:	Siphonalia. Mollusks, Fossil.