Traits name details
original description
White, C.A. (1886). On the Fresh-water Invertebrates of the North American Jurassic. <em>United States Geological Survey Bulletin.</em> 29: 1-41. page(s): 705-706, pl. 2, figs 3, 4 [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): 74 [details] Available for editors 
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