Accession Number : ADA296486

Title :   Fresh-Water Mollusks of Cretaceous Age from Montana and Wyoming.

Corporate Author : DEPARTMENT OF ENERGY WASHINGTON DC

Personal Author(s) : Yen, Teng-Chien

PDF Url : ADA296486

Report Date : 26 FEB 1952

Pagination or Media Count : 28

Abstract : The paper presents a fresh-water molluscan assemblage found in the Kootenai formation southeast of Harlowton, Montana, which indicates that the enclosing bed is of fluviatile origin. Molluscan faunas from contemporary beds, such as the Cloverly formation of central Wyoming and the Peterson limestone in the Gannett group of western Wyoming, are compared with it. An account of 29 species of pelecypods and gastropods is given, of which 4 genera and 8 species of gastropods are herein described as new.

Descriptors :   *LIMESTONE, *MOLLUSCA, FRESH WATER, MONTANA, WYOMING.

Subject Categories : Biology
      Geology, Geochemistry and Mineralogy

Distribution Statement : APPROVED FOR PUBLIC RELEASE