Traits name details
original description
White, C.A. (1878). Paleontological Papers No. 6: Descriptions of new species of invertebrate fossils from the Laramie Group. <em>Bulletin of the United States Geological and Geographical Survey of the Territories.</em> 4: 707-719., available online at https://www.biodiversitylibrary.org/page/31549803 page(s): 710-711 [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): 82 [details] Available for editors 
additional source
Watters, G. T. (2001). The evolution of the Unionacea in North America, and its implications for the worldwide fauna. <em>In: Bauer, G.; Wächtler, K. (eds) Ecology and evolution of the freshwater mussels Unionoida. Springer, Berlin, Heidelberg.</em> pp. 281-307. page(s): 288 [details] Available for editors 
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