Uniomerus

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

Species
Recent species placed within the genus Uniomerus include:
 * Uniomerus carolinianus (Bosc, 1801)
 * Uniomerus columbensis (Lea, 1857)
 * Uniomerus declivis (Say, 1831)
 * Uniomerus tetralasmus (Say, 1831)

Prehistoric species

 * Uniomerus hanleyi