Traits name details
original description
White, C.A. (1907). The ancestral origin of the North American Unionidae, or fresh-water mussels. Smithsonian Miscellaneous Collections, 48(7): 75-88, available online at https://biodiversitylibrary.org/page/29986105 page(s): pl. 31, fig. 7 [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): 85-86 [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): 292, fig. 15.20 [details] Available for editors 
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