Traits name details
original description
Wanner, H.E. (1921). Some faunal remains from the Trias of York County, Pennsylvania. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 73(1): 25-37., available online at https://biodiversitylibrary.org/page/1650615 page(s): 32-33, pl. 2, figs 1-3, pl. 3, fig. 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): 63 [details] Available for editors 
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