MolluscaBase taxon details
original description
Holt, E.L. (1942). A New <i>Unio</i> from the Morrison Formation of the Grand River Valley, Colorado. <em>Journal of Paleontology.</em> 16(4): 459-460. page(s): 459-460, pl. 69, figs 1-5 [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. 15.6 [details]
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 [details] Available for editors [request]
From editor or global species database
Type locality "On the Ladder Canyon road about six miles south of Grand Junction, Colorado", USA; Morrison Fm., Late Jurassic [details]
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