White, C.A. (1895). Notes on the invertebrate fauna of the Dakota formation, with description of new molluscan forms <em>Proceedings of the United States National Museum</em>. 17: 131-138, available online at https://www.biodiversitylibrary.org/page/15675129
page(s): 133, pl. 8, figs 1-3 [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): 78 [details] Available for editors [request]
From editor or global species database
Type locality "Jefferson County, Nebraska, 5 miles west of north from Fairbury, about 1 mile from the Little Blue River. [...] upon the north side of a deep ravine, about half way up the slope. This ravine opens into Whiskey Run, and the latter empties into Little Blue River." [details]