original description
Russell, L.S. (1934). New fossil fresh-water Mollusca from the Cretaceous and Paleocene of Montana. <em>Journal of the Washington Academy of Sciences.</em> 24: 128-131., available online at https://www.biodiversitylibrary.org/page/39918518
page(s): 128-129, figs 1, 2 [details] Available for editors [request]
basis of record
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313.
page(s): 95 [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): 295 [details]
From editor or global species database
Type locality "From the Eagle coal mine, Bear Creek, Carbon county, Montana. [...] 'Bear Creek' horizon", USA; Paleocene [details]