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. 9: lxiv + 1–629, 45 pls., available online athttps://www.biodiversitylibrary.org/page/2024294 page(s): 573, fig. 77 [details]
Note Mouth of Judith River, Fergus County, Montana,...
From editor or global species database
Type locality Mouth of Judith River, Fergus County, Montana, United States; Judith River Formation, Campanian, late Cretaceous [details]
original descriptionMeek, 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. 9: lxiv + 1–629, 45 pls., available online athttps://www.biodiversitylibrary.org/page/2024294 page(s): 573, fig. 77 [details]
basis of recordHenderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313. page(s): 198 [details] Available for editors [request]
Present Inaccurate Introduced: alien Containing type locality
From editor or global species database
Classification Systematic position doubtful. [details] Type locality Mouth of Judith River, Fergus County, Montana, United States; Judith River Formation, Campanian, late Cretaceous [details]
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