original description
Hanna, G. D. (1922). Fossil freshwater mollusks from Oregon, contained in the Condon Museum of the University of Oregon. <em>University of Oregon Publication.</em> 1(12): 1-22., available online at https://www.biodiversitylibrary.org/page/20825593
page(s): 4, pl. 1, figs 4-6 [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): 250 [details] Available for editors [request]
From editor or global species database
Type locality Vicinity of Warner Lakes (exact locality unknown), Lake County, Oregon, United States; Blancan, Pliocene to early Pleistocene [details]