original description
White, C.A. (1886). On the Fresh-water Invertebrates of the North American Jurassic. <em>United States Geological Survey Bulletin.</em> 29: 1-41.
page(s): 705, pl. 2, fig. 7 [details]
basis of record
Henderson, J. (1935). Fossil non-marine Mollusca of North America. <em>Geological Society of America Special Papers.</em> 3: 1-313.
page(s): 75 [details] Available for editors [request]
additional source
Good, S. C. (2004). Paleoenvironmental and paleoclimatic significance of freshwater bivalves in the Upper Jurassic Morrison Formation, Western Interior, USA. <em>Sedimentary Geology.</em> 167(3-4): 163-176., available online at https://doi.org/10.1016/j.sedgeo.2004.01.005 [details] Available for editors [request]
From editor or global species database
Type locality "8 miles north of Cañon City", Colorado, USA; Morrison Fm., Late Jurassic [details]