Meek, F.B. & F.V. Hayden. 1860. Systematic catalogue, with synonyms, &c., of Jurassic, Cretaceous and Tertiary fossils collected in Nebraska by the Exploring Expeditions under the command of Lieut. G.K. Warren of U.S. Topographical Engineers. Proceedings of the Academy of Natural Sciences of Philadelphia 12: 417-. Available electronically.
Meek & Hayden, 1860. Proc. Acad. Nat. Sci. 12: 432.
‘Meek & Hayden’ Russell, 1934. Canad. Field Nat. 48(1): 1.
(error for Unio danai Meek & Hayden, 1857)
Meek & Hayden, 1860. Proc. Acad. Nat. Sci. 12: 432.