MolluscaBase taxon details
original description
Yen, T.-C. (1952). Molluscan Fauna of the Morrison Formation. <em>United States Geological Survey Professional Paper.</em> 233-B: 21-51. page(s): 43, pl. 6, figs 15a-b [details] Available for editors [request]
From editor or global species database
Type locality Locality 20, SW 1/4 NE 1/4 sec. 33, T. 10 N., R. 81 W., Jackson County, Colorado, United States; basal Morrison Formation, late Jurassic [details]
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