original description
White, C.A. (1886). On the relation of the Laramie molluscan fauna to that of the succeeding fresh-water Eocene and other groups. <em>United States Geological Survey Bulletin.</em> 34: 391-442.
page(s): 409, pl. 4, fig. 1, pl. 5, figs 1, 2 [details]
status source
Henderson, J. (1918). The nomenclature and systematic positions of some North American fossil and recent mollusks. <em>The Nautilus.</em> 32(2): 60-64., available online at https://biodiversitylibrary.org/page/1772069
page(s): 60 [details]
From editor or global species database
Type locality Reported by White (1886) as "Wales" (Utah). However, according to La Rocque (1960), there are no lacustrine deposits at this locality. After Spieker (1946), the fossils reported by White variably derive from Price River, North Horn and Flagstaff formations (Campanian-Paleocene). [details]