original description
White, C.A. (1883). Contributions to invertebrate paleontology, No. 3: Certain Tertiary Mollusca from Colorado, Utah, and Wyoming. <em>United States Geological and Geographical Survey of the Territories, annual report (for 1878).</em> 12(1): 41-48., available online at https://www.biodiversitylibrary.org/page/33725735
page(s): 46-47, pl. 19, fig. 9a [details]
From editor or global species database
Type locality "Henry's Fork, Wyoming", United States [details]