Stanton & Hatcher. 1905. Bulletin of the United States Geological Survey 257.
Stanton & Hatcher, 1905. Bull. U.S. Geol. Surv. 257: 108, pl. 12, figs. 2-4.
(intro'd as intra-sp. of Unio priscus Meek & Hayden, 1856)
Stanton & Hatcher, 1905. Bull. U.S. Geol. Surv. 257: 46, pl. 13, figs. 2-3.