Marshall, W.B. 1923. New pearly freshwater mussels from Mexico and Uruguay. Proceedings of the United States National Museum 63(2485): 1-4. Available electronically.

Marshall, 1923. Proc. U.S. Nat. Mus. 63(2485): 1, pl. 1, figs. 6-8; pl. 2, figs. 4-5; pl. 3.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_347183, Estera del Avileno, Tamaulipas, Mexico.

Marshall, 1923. Proc. U.S. Nat. Mus. 63(2485): 2, pl. 1, figs. 3-4; pl. 2, figs. 1-3.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_346801, Colonia, Uruguay.

Marshall, 1923. Proc. U.S. Nat. Mus. 63(2485): 3, pl. 1, figs. 1-2, 5; pl. 2, figs. 67.
Type(s): HOLOTYPE (ORIG. DESIG.) USNM_346770, Colon, Entre Rios Prov., Argentina.