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): 66-67, figs 15D-G [details] Available for editors [request]
From editor or global species database
Type locality Locality NFF-3/E-3, E bank of Flathead River, 1.0 km NE of Canadian Kootenay Oil Company (d-4I-A/82-G22) oil well derrick road, British Columbia, Canada; middle to late Chadronian, late Eocene [details]