Author: Hanna G.D. & Gaylord E.G.,
Title: Description of a new genus and species of freshwater gastropod mollusk (Scalex petrolia) from the Etchegoin Pliocene of California
Description: 1924. In 8vo, offp., pp. 3 with 2 figs. Offprint from Proc. Calif. Ac. Sci., 4th ser., 13(9)

Keywords: shells fossil paleontology geology


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