original description
Russell, L.S. (1976). Pelecypods of the Hell Creek Formation (Uppermost Cretaceous) of Garfield County, Montana. <em>Canadian Journal of Earth Sciences.</em> 13: 365-388.
page(s): 387, pl. 7, figs 4-9 [details] Available for editors [request]
additional source
Hartman, J.H. (1998). The biostratigraphy and paleontology of latest Cretaceous and Paleocene freshwater bivalves from the western Williston Basin, Montana, U.S.A. In: Johnston, P.A. & Haggart, J.W. Bivalves: an eon of evolution. Calgary, University of Calgary Press, 317-345.
page(s): 337 [details] Available for editors [request]
From editor or global species database
Type locality Not explicitly stated, but probably from Snow Creek, on the Missouri River (Montana, USA; see Russell 1976, p. 366) [details]