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): 58-59, pl. 10, figs 7-9 [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): 202 [details] Available for editors [request]
From editor or global species database
Type locality At Bear River, near Sulphur Creek mouth, Uinta County, Wyoming, United States; Bear River Formation, Albian, early Cretaceous; and 20 miles N of Cokeville, Lincoln County, Wyoming, United States; Cenomanian, late Cretaceous ("At the locality near the mouth of Sulphur Creek and at the one 20 miles north of Cokeville")
[details]