MolluscaBase name details
original description
(of Valvata jurassica C. C. Branson, 1935 †) Branson, C.C. (1935). Fresh-Water invertebrates from the Morrison (Jurassic?) of Wyoming. <em>Journal of Paleontology.</em> 9(6):514-522., available online at https://www.jstor.org/stable/1298199
page(s): 519, pl. 57, figs 7, 8 [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): 40, pl. 6, figs 5a-c [details] Available for editors [request]