Pilsbry, H.A. 1920. Mollusks from Lake Chapala, State of Jalisco and vicinity. Proceedings of the Academy of Natural Sciences of Philadelphia 72: 192-194. Available electronically.

Pilsbry, 1920. Proc. Acad. Nat. Sci. 72: 193, fig. 3.
Type(s): HOLOTYPE (ORIG. DESIG.) ANSP_46197, Toliman, Jalisco.

Pilsbry, 1920. Proc. Acad. Nat. Sci. 72: 194, fig. 4.
(intro'd as intra-sp. of Unio aztecorum Philippi, 1847)
Type(s): HOLOTYPE (ORIG. DESIG.) ANSP_46195, Toliman, Jalisco [Mexico].