original description
Tozer, E.T. (1956). Uppermost Cretaceous and Paleocene nonmarine molluscan faunas of western Alberta. <em>Geological Survey of Canada, Memoir.</em> 280: 1-125., available online at https://doi.org/10.4095/101507
page(s): 87, pl. 9, figs 1-3 [details] Available for editors [request]
basis of record
Roth, B. (1986). Land mollusks (Gastropoda: Pulmonata) from Early Tertiary Bozeman Group, Montana. <em>Proceedings of the California Academy of Sciences.</em> 44(11): 237-267., available online at https://www.biodiversitylibrary.org/page/16005679
page(s): 262 [details] Available for editors [request]
From editor or global species database
Type locality "Highwood River, north side, l.s. 12, sec. 11, tp. 18, rge. 2, W. 5th mer.", Alberta, Canada [details]