original description
(of Limnaea contracosta J. G. Cooper, 1894 †) Cooper, J. G. (1894). Catalogue of Californian Fossils (parts II, III, IV, and V). <em>California State Mining Bureau Bulletin.</em> 4: 1-65, 6 pls.
page(s): 54, pl. 5, fig. 59 [details]
basis of record
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313.
page(s): 236 [details] Available for editors [request]
additional source
Cooper, J.G. (1894). On some Pliocene fresh water fossils of California. <em>Proceedings of the California Academy of Sciences, second series.</em> 4: 166-172., available online at https://www.biodiversitylibrary.org/page/16063639
page(s): 169, pl. 14, fig. 12 [details]
From editor or global species database
Type locality Along the westerly branch of San Pablo Creek, on the stage road just south of Rocky Mound, Contra Costa County, California, United States; Contra Costa Formation, late Miocene [details]