original description
White, C. A. (1889). On invertebrate fossils from the Pacific coast. <em>United States Geological Survey, Bulletin.</em> 51: 435-532, 14 pls.
page(s): 59, pl. 11, figs 3-7 [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): 113 [details] Available for editors [request]
From editor or global species database
Type locality "Carbonado, Wilkeson (Flett's Creek), and valley of Green River", Washington, USA; Puget Group, Eocene [details]