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.^[1][2]

Parvaspina
Tar River spinymussel (Parvaspina steinstansana)
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Tribe:	Pleurobemini
Genus:	Parvaspina Perkins, Johnson & Gangloff, 2017
Species
P. collina P. steinstansana

Species

• Parvaspina collina (James River spinymussel)
• Parvaspina steinstansana (Tar River spinymussel)

Both species in this genus were formerly placed in other genera (Elliptio for steinstansana, Pleurobema for collina) before both being placed in the new genus Parvaspina in 2017.^[3]