Traits name details
original description
Meek, F.B.; Hayden, F.V. (1860). Systematic Catalogue, with Synonyma, &c., of Jurassic, Cretaceous and Tertiary Fossils collected in Nebraska, by the Exploring Expeditions under the command of Lieut. G. K. Warren, of U. S. Topographical Engineers. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 12: 417-432., available online at https://www.biodiversitylibrary.org/page/1801358 page(s): 432 [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): 108-109 [details] Available for editors 
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