Conrad, T.A. 1855. Descriptions of three new species of Unio. Proceedings of the Academy of Natural Sciences of Philadelphia 7: 256. Available electronically.
Conrad, 1855. Proc. Acad. Nat. Sci. 7: 256.
Type(s): TYPE LOST XXX_UNKNOWN, Rio Grande, Texas.

Conrad, 1855. Proc. Acad. Nat. Sci. 7: 256.
Type(s): LECTOTYPE ANSP_129918, Pearl River, Miss.
Conrad, 1855. Proc. Acad. Nat. Sci. 7: 256.
(renamed Unio tamaulipasensis Fischer & Crosse, 1894)
Type(s): TYPE LOST XXX_UNKNOWN, San Juan River, Taumilapas.