original description
Conrad, T. A. (1843). Descriptions of a new genus, and of twenty-nine new Miocene, and one Eocene fossil shells of the United States. <em>Proceedings of the Academy of Natural Sciences of Philadelphia.</em> 1(30-31): 305-311., available online at https://www.biodiversitylibrary.org/page/26286360
page(s): 307 [details]
From editor or global species database
Type locality St. Mary's County [details]