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): 34, pl. 3, fig. 5, textfig. 6 [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): 64 [details] Available for editors [request]
From editor or global species database
Type locality "Shale, Little Conewago Creek", York Co., Pennsylvania, USA; Triassic [details]