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): 229, pl. 20, figs 4, 5 [details]
From editor or global species database
Type locality "Section 28, township 3, range 2, 6 to 8 miles west of south of Alexandria, Louisiana, at station 6040", USA; Pliocene [details]