original description
White, C.A. (1886). On the Fresh-water Invertebrates of the North American Jurassic. <em>United States Geological Survey Bulletin.</em> 29: 1-41.
page(s): 21-22, pl. 4, figs 4-7 [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): 257 [details] Available for editors [request]
source of synonymy
Yen, T.-C. (1952). Molluscan Fauna of the Morrison Formation. <em>United States Geological Survey Professional Paper.</em> 233-B: 21-51.
page(s): 39 [details] Available for editors [request]
From editor or global species database
Type locality Como Bluffs, Carbon County, Wyoming, United States; Morrison Formation (Atlantosaurus beds), late Jurassic [details]