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): 38, pl. 5, fig. 2a-f [details] Available for editors [request]
basis of record
Watters, G.T. (2001). The Evolution of the Unionacea in North America, and Its Implications for the Worldwide Fauna. In: Bauer, G.; Wächtler, K. (eds) Ecology and Evolution of the Freshwater Mussels Unionoida. Springer, Berlin, Heidelberg, pp. 281-307 page(s): 286, fig. 15.4 [details]
From editor or global species database
Type locality "About 100 yards southeast of Vernal Summit on Uncompahgre Tunnel road of Uncompahgre project, Montrose County, Colorado", USA; Morrison Fm., Late Jurassic [details]
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