Genus Cyrtonaias H. Crosse & P. Fischer, 1894

(3-6-4-0-4-9-5-14-0-0-0-0-0)
Ref. Amer. Fish. Soc., 1988 p 29
Syn. Cyrtonais L. S. Frierson, 1927
Ref. Vokes, 1980 p 89

tampicoensis (I. Lea, 1838)
(3-6-4-0-4-9-5-14-0-1-0-0-0)
Tampico Pearlymussel
Ref. Amer. Fish. Soc., 1988 p 29