original description
Dall, W. H. (1913). On a brackish water Pliocene fauna of the southern Coastal Plain. <em>Proceedings of The United States National Museum.</em> 46 (2023): 225-237., available online at https://www.biodiversitylibrary.org/page/7762111
page(s): 231, pl. 21, figs 1-2, 7 [details]
additional source
Stenzel, H. B. & Turner, F. E. (1944). A Miocene invertebrate fauna from Burkeville, Newton County, Texas. <em>American Journal of Science and Arts.</em> 242: 289.
page(s): 291 [details]
From editor or global species database
Type locality Rapides Parish (about 10 miles SW of Alexandria) ("Station 6040, near Alexandria"), Louisiana, United States; Fleming Formation (Castor Creek Member), middle Miocene [details]