original description
Russell, L.S. (1931). Mollusca from the Upper Cretaceous and Lower Tertiary of Alberta. <em>Transactions of the Royal Society of Canada, third series. Section IV - Geological Sciences.</em> 25: 9-19.
page(s): 16-17, pl. 2, figs 14-15 [details] Available for editors [request]
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): 152-153 [details] Available for editors [request]
basis of record
Pierce, H.G.; Constenius, K.N. (2014). Terrestrial and Aquatic Mollusks of the Eocene Kishenehn Formation, Middle Fork Flathead River, Montana. <em>Annals of Carnegie Museum.</em> 82(4): 305-329., available online at https://doi.org/10.2992/007.082.0401
page(s): 318, fig. 6G [details] Available for editors [request]
From editor or global species database
Type locality "from west side of McLeod river, just below mouth of McPherson creek, in unsurveyed legal subdivision 1, section 6, township 51, range 22, west of 5th meridian", Alberta, Canada [details]