original description
Johnson, C. W. (1899). New and interesting species in the "Isaac Lea collection of Eocene Mollusca". <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 51: 71-82, pls. 1-2., available online at https://www.biodiversitylibrary.org/page/6389238
page(s): 77-78, pl. 2, fig. 6 [details]
From editor or global species database
Type locality Montgomery, Grant Parish [details]