MolluscaBase taxon details
original description
(of Planorbis nebrascensis J. Evans & Shumard, 1856 †) Evans, J. & Shumard, B. F. (1856). Descriptions of new fossil species from the fresh water Tertiary Formation of Nebraska, Collected by the North Pacific Railroad Expedition, under Gov. J. J. Stevens. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 7: 164-165., available online at https://www.biodiversitylibrary.org/page/26299385
page(s): 164-165 [details]
basis of record
Russell, L.S. (1956). Nonmarine Mollusca from the North Park Formation of Saratoga Valley, Wyoming. <em>Journal of Paleontology.</em> 30(5): 1260-1263.
page(s): 1261, textfig. 2 [details] Available for editors [request]