original description
Branson, C. C. (1935). Fresh-Water Invertebrates from the Morrison (Jurassic?) of Wyoming. <em>Journal of Paleontology.</em> 9(6): 514-522.
page(s): 517-518, pl. 56, figs 1-5, 8-10, 12, 13, 15, 19 [details] Available for editors
[request]
basis of record
Yen, T.-C. (1952). Molluscan Fauna of the Morrison Formation. <em>United States Geological Survey Professional Paper.</em> 233-B: 21-51.
page(s): 37, pl. 3, figs 6a-b [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): 285, 286, fig. 15.5 [details]
From editor or global species database
Type locality "Three miles south of Mayoworth, Wyoming", USA; Morrison Fm., Late Jurassic [details]