original description
Clark, W.B. (1911). Systematic paleontology, Lower Cretaceous. Mollusca. In: Anonymous (Ed.) Lower Cretaceous Maryland Geological Survey, Baltimore, pp. 211-213, available online at https://www.biodiversitylibrary.org/page/35691500
page(s): 213, pl. 21, 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): 76 [details] Available for editors [request]
additional source
Yen, T.-C. (1949). Review of the Lower Cretaceous Fresh-Water Molluscan Faunas of North America. <em>Journal of Paleontology.</em> 23(5): 465-470.
page(s): 466 [details] Available for editors [request]
From editor or global species database
Type locality "White House Bluff, Fairfax County, Virginia", USA; Patapsco Fm., Albian, early Cretaceous [details]