original description
Whiteaves, J.F. (1885). Report on the Invertebrata of the Laramie and Cretaceous rocks of the vicinity of the Bow and Belly Rivers and adjacent localities in the North-West Territory. <em>Contributions to Canadian palaeontology.</em> 1(1): 1-89., available online at https://www.biodiversitylibrary.org/page/38502645
page(s): 14, pl. 2, figs 5-5b [details]
status source
Russell, L.S. (1926). Mollusca of the Paskapoo Formation in Alberta. <em>Transactions of the Royal Society of Canada, third series. Section IV - Geological Sciences.</em> 20: 207-220.
page(s): 215 [details] Available for editors [request]
From editor or global species database
Type locality North Fork of Milk River, Cardston County, Pincher Creek, crossing of Mill Creek and Fort MacLeod Trail, and St. Mary River, Gooseberry Canyon, Cardston County; all Alberta, Canada; St. Mary River Formation, Campanian to Maastrichtian, late Cretaceous [details]