mollusk family - a family of mollusks

Bivalvia, class Bivalvia, class Lamellibranchia, class Pelecypoda, Lamellibranchia - oysters; clams; scallops; mussels

genus Mytilus, Mytilus - type genus of the family Mytilidae: smooth-shelled marine mussels

marine mussel, mytilid - marine bivalve mollusk having a dark elongated shell; live attached to solid objects especially in intertidal zones