Traits name details
original description
White, C.A. (1895). Notes on the invertebrate fauna of the Dakota formation, with description of new molluscan forms <em>Proceedings of the United States National Museum</em>. 17: 131-138, available online at https://www.biodiversitylibrary.org/page/15675129 page(s): 133, pl. 8, figs 1-3 [details]
basis of record
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313. page(s): 78 [details] Available for editors 
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