original description
Meek, F. B. & Hayden, F. V. (1861). Descriptions of new lower Silurian, (Primordial), Jurassic, Cretaceous, and Tertiary Fossils, collected in Nebraska, by the Exploring Expedition under the command of Capt. Wm. F. Raynolds, U. S. Top. Engrs.; with some remarks on the rocks from which they were obtained. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 13: 415-447., available online at https://www.biodiversitylibrary.org/page/26313121
page(s): 447 [details]
additional source
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313.
page(s): 137 [details] Available for editors [request]
From editor or global species database
Type locality "Wind River Valley", Wyoming, United States [details]