original description
Russell, L.S. (1952). Molluscan fauna of the Kishenehn Formation, Southeastern British Columbia. In: Anonymous (Ed.) Annual Report of the National Museum of Canada for the fiscal year 1950-51. <em>National Museum of Canada Bulletin.</em> 126: 120-141.
page(s): 127-128, textfig. 6, pl. 17, figs 3-5 [details] Available for editors [request]
additional source
Watters, G.T. (2001). The Evolution of the Unionacea in North America, and Its Implications for the Worldwide Fauna. In: Bauer, G.; Wächtler, K. (eds) Ecology and Evolution of the Freshwater Mussels Unionoida. Springer, Berlin, Heidelberg, pp. 281-307
page(s): 297, fig. 15.28 [details]
From editor or global species database
Type locality Locality W1 ("on the west or right bank about 0.6 mile north of the boundary"), Flathead Valley, British Columbia, Canada; Kishenehn Fm., Eocene [details]