original description
White, C.A. (1879). Report on the paleontological field-work for the season of 1877. <em>United States Geological and Geographical Survey of the Territories, annual report (for 1877).</em> 11: 161-272., available online at https://www.biodiversitylibrary.org/page/30820140
page(s): 251 (footnote) [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): 245 [details] Available for editors [request]
From editor or global species database
Type locality Three miles east of Table Rock Station, Wyoming, United States; lower Green River Formation, Sand Wash Basin, early Eocene [details]