original description
Stenzel, H. B., Krause, E. K. & Twining, J. T. (1957). Pelecypoda from the type locality of the Stone City Beds (Middle Eocene). <em>Bureau of Economic Geology, The Univesity of Texas, Austin.</em> 5704: 1–237, pls. 1-22 [15 February]., available online at https://repositories.lib.utexas.edu/handle/2152/77690
page(s): 88-89, pl. 8, fig. 13 [details]
From editor or global species database
Type locality "Bluff on right bank of the Colorado River at Smithville, Bastrop County, Texas, about 625 feet downstream from the new bridge of State Highway 71, built in 1950" [details]