Traits name details
original description
Russell, L.S. (1929). Upper Cretaceous and lower Tertiary Gastropoda from Alberta. <em>Transactions of the Royal Society of Canada, third series. Section IV - Geological Sciences.</em> 23: 81-90. page(s): 83, pl. 1, figs 7-8 [details] Available for editors 
additional source
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313. page(s): 222 [details] Available for editors 
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