original description
White, C.A. (1895). The Bear River Formation and its characteristic fauna. <em>United States Geological Survey Bulletin.</em> 128: 1-108., available online at https://archive.org/details/bearriverformat00whitgoog
page(s): 49-50, pl. 6, figs 16-18 [details]
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): 163 [details] Available for editors [request]
source of synonymy
Fürsich, F.T.; Kauffman, E.G. (1984). Palaeoecology of marginal marine sedimentary cycles in the Albian Bear River Formation of south-western Wyoming. <em>Palaeontology.</em> 27(3): 501-536., available online at http://www.biodiversitylibrary.org/page/49742040#page/77/mode/1up
page(s): 504 [details]
From editor or global species database
Type locality "20 miles north of Cokeville, Wyoming; [...] near Sage Station, in the valley of Twin Creek", Lincoln County, Wyoming, United States; Cenomanian to Turonian, late Cretaceous
[details]