original description
White, C.A. (1877). Paleontological Papers No. 2. - Descriptions of new species of Uniones, and a new genus of fresh-water Gasteropoda from the Tertiary strata of Wyoming and Utah <em>Bulletin of the United States Geological and Geographical Survey of the Territories</em>. 3: 603-606, available online at https://www.biodiversitylibrary.org/page/31646309
page(s): 605-606 [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): 90 [details] Available for editors [request]
From editor or global species database
Type locality "Wahsatch group at Wales, Utah, and also in the Canon of Desolation of Green River in the same Territory", USA; Wasatchian, early Eocene [details]