original description
Marshall, W. B. (1929). New fossil land and fresh-water mollusks from the Reynosa formation of Texas. <em>Proceedings of the United States National Museum.</em> 76(2798): 1-6., available online at https://www.biodiversitylibrary.org/page/27945337
page(s): 2-3, pl. 1, figs 1, 9 [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): 62 [details] Available for editors [request]
additional source
Modell, H. (1957). Die fossilen Najaden Nordamerikas. Ein Klassifizierungsversuch. <em>Archiv für Molluskenkunde.</em> 86(4/6): 183-200.
page(s): 190 [details] Available for editors [request]
From editor or global species database
Type locality Along the Guadalupe River, De Witt County, Texas, USA; Reynose Fm., Pliocene [details]