Fresh-water mollusks of Cretaceous Age from Montana and Wyoming
Series: Geological Survey professional paper -- 233-A; Shorter contributions to general geology
Publisher: U.S. Govt. Print. Off.
Published: 1951
Place of publication: Washington
Language: eng
Number of pages: 20
Subjects: Mollusks; Fossil Gastropoda; Paleontology
Notes: [Reprinted from] Shorter Contributions to General Geology, 1950.

Includes bibliographies and index.
Table of contents: title: pt. 1.; title: A fluviatile fauna from the Kootenai formation near Halowton, Montana -- -- pt. 2.; title: An Upper Crataceous fauna from the Leeds Creak area, Lincoln County, Wyoming.