About Theliderma metanevra (Rafinesque, 1820)
Theliderma metanevra, commonly called the monkeyface, is a species of freshwater mussel. It is an aquatic bivalve mollusk that belongs to Unionidae, the family of river mussels. This species is native to the eastern United States, and it inhabits medium-sized to large rivers. While it has been extirpated from some parts of its original range, it remains widespread and fairly common overall.