original description
Pierce, H.G.; Constenius, K.N. (2001). Late Eocene-Oligocene nonmarine mollusks of the northern Kishenehn Basin, Montana and British Columbia. <em>Annals of Carnegie Museum.</em> 70(1): 1-112.
page(s): 79-80, figs 16M-N [details] Available for editors [request]
From editor or global species database
Type locality Bowman Creek (BWN-2) locality, N bank of Bowman Creek, 3.0 km from mouth on Flathead River, Flathead County, Montana, United States; Chadronian, late Eocene, late Eocene [details]