Parvaspina
Parvaspina is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae. It contains only two critically endangered species, both endemic to river basins in a small region of the southeastern United States.
Species
Parvaspina collina Parvaspina steinstansanaBoth species in this genus were formerly placed in other genera before both being placed in the new genus Parvaspina in 2017.