MolluscaBase taxon details
original description
Meek, F.B. (1876) A report on the invertebrate Cretaceous and Tertiary fossils of the upper Missouri country. In Hayden, F.V. (Ed.) Report of the United States Geological Survey of the Territories. Invertebrate Paleontology, 9, lxiv + 1–629, 45 pls., available online at https://biodiversitylibrary.org/page/2024294 [details]