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): 604 [details]
From editor or global species database
Type locality "Wahsatch group; Black Buttes Station, Wyoming Territory", USA; Lance Fm., Maastrichtian, Late Cretaceous (not Wasatchian = early Eocene) [details]