Medionidus

Medionidus is a genus of freshwater mussels, aquatic bivalve mollusks in the family Unionidae.

Species within the genus Medionidus

 * Medionidus acutissimus (Alabama moccasinshell)
 * Medionidus conradicus
 * Medionidus parvulus (Coosa moccasinshell)
 * Medionidus penicillatus (gulf moccasinshell)
 * Medionidus simpsonianus (Ochlockonee moccasinshell)
 * Medionidus walkeri