Theliderma tuberosa

Theliderma tuberosa, the rough rockshell, is a species of freshwater mussel. It is an aquatic bivalve mollusk in the family Unionidae, the river mussels. It has sometimes been treated as a variety or big-river ecotype of Theliderma metanevra, due to only having slight shell differences.

Theliderma tuberosa
Conservation status
Presumed Extinct  (NatureServe)[1]
Scientific classification
Kingdom:	Animalia
Phylum:	Mollusca
Class:	Bivalvia
Order:	Unionida
Family:	Unionidae
Genus:	Theliderma
Species:	T. tuberosa
Binomial name
Theliderma tuberosa (I. Lea, 1840)
Synonyms
Quadrula tuberosa (I. Lea, 1840)

This species was endemic to the Cumberland River watershed in the states of Kentucky and Tennessee. It is believed to be either extinct or critically endangered due to habitat destruction and pollution.