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 [request]
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]
From editor or global species database
Type locality Oldman River, Lethbridge County, Alberta, Canada; St. Mary River Formation, Campanian to Maastrichtian, late Cretaceous [details]