Lined pocketbook

The lined pocketbook (Lampsilis binominata) was a species of freshwater river mussel, an aquatic bivalve in the family Unionidae the river mussels. This species was endemic to the United States. It is now extinct.

A study done by the University of Georgia Museum of Natural Science showed that Lined Pocketbook filtered water through their gills, leading to the digestion of trapped food particles.