original description
Simpson, C. T. (1896). Description of four new Triassic Unios from the Staked Plains of Texas. <em>Proceedings of the United States National Museum.</em> 18(1072): 381-385., available online at https://biodiversitylibrary.org/page/7733435
page(s): 384-385, textfig. 5 [details]
additional source
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): 284, fig. 15.1 [details]
From editor or global species database
Type locality "Southeast corner of Garza County, Texas; windmill 3 miles north of Dockum; tank north of Double Mountain River; head of Duck Creek, Dickens County, Texas", USA; Triassic [details]