original description
White, C.A. (1882). New molluscan forms from the Laramie and Green River groups, with discussion of some associated forms heretofore known. <em>Proceedings of the United States National Museum.</em> 5: 94-99., available online at https://www.biodiversitylibrary.org/page/7320586
page(s): 94, pl. 3, figs 1, 2 [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): 91 [details] Available for editors [request]
From editor or global species database
Type locality "Strata of the Green River Eocene group near Washakie Station, in Southern Wyoming" (USA) [details]