Because no individuals have been seen recently , it is assumed to be extinct .
The Coosa elktoe ( Alasmidonta mccordi ) is a species of freshwater mussel , an aquatic bivalve mollusk in the family Unionidae , the river mussels .
Because no individuals have been seen recently , Coosa elktoe is assumed to be extinct .
The Coosa elktoe ( Alasmidonta mccordi ) is a species of freshwater mussel , an aquatic bivalve mollusk in the family Unionidae , the river mussels .