Traits name details
original description
White, C.A. (1895). The Bear River Formation and its characteristic fauna. <em>United States Geological Survey Bulletin.</em> 128: 1-108., available online at https://archive.org/details/bearriverformat00whitgoog page(s): 48, pl. 6, figs 14-15 [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): 153 [details] Available for editors 
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