Sagittunio

Sagittunio is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae.

Species
There are four recognized species:
 * Sagittunio aldermani Watters, 2018
 * Sagittunio nasutus (Say, 1817)
 * Sagittunio subrostratus (Say, 1831)
 * Sagittunio vaughanianus (Lea I., 1838)