Mollusca from the Tertiary strata of the West. Bulletin of the AMNH ; v. 31, article 20.

Cockerell, Theodore D. A. (Theodore Dru Alison), 1866-1948.Henderson, Junius, 1865-1937.2005-10-062005-10-061912http://hdl.handle.net/2246/715p. 229-233, [2] leaves of plates : ill. ; 24 cm.Includes bibliographical references.Land Mollusca -- Freshwater Gastropoda.2523741 bytesapplication/pdfen-USQH1 .A4 vol.31, art.20, 1912Gastropoda, Fossil -- West (U.S.)Mollusks, Fossil -- West (U.S.)Paleontology -- Paleogene -- West (U.S.)Paleontology -- West (U.S.)Mollusca from the Tertiary strata of the West. Bulletin of the AMNH ; v. 31, article 20.Western Tertiary Molluscatext