original description
White, C. A. (1877). Report upon the invertebrate fossils collected in portions of Nevada, Utah,
Colorado, New Mexico, and Arizona, by parties of the expeditions of 1871, 1872, 1873, and 1874. <em>Report upon United States geographical surveys west of the one hundredth meridian. Vol. 4, Paleontology . Government Printing Office, Washington DC.</em> pp. 1−219, pls. 1.
page(s): 211, pl. 21, figs 1a-b [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): 260-261 [details] Available for editors [request]
From editor or global species database
Type locality South of Table Cliff ("Last Bluff"), Garfield County, Utah, United States; Claron Formation, early Eocene [details]