original description
White, C.A. (1880). Description of new invertebrate fossils from the Mesozoic and Cenozoic rocks of Arkansas, Wyoming, Colorado, and Utah. <em>Proceedings of the United States National Museum.</em> 3: 157–162., available online at https://www.biodiversitylibrary.org/page/14917257
page(s): 159-160 [details]
additional source
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313.
page(s): 247 [details] Available for editors [request]
From editor or global species database
Type locality Soldier Summit (Soldier Creek head) ("Head of Soldier's Fork"), Utah, United States; Green River Formation (Flagstaff Member to Colton Formation), late Paleocene to earliest Eocene [details]