adjective
Definition: Relating to a group of aquatic animals that have two shells, such as clams and oysters.
Example: The lamellibranch species are important for maintaining the health of marine ecosystems.
noun
Definition: A type of bivalve mollusk that includes animals like clams, oysters, and scallops, which have two shells connected by a hinge.
Example: The lamellibranchs in the tidal pool included various species of clams and mussels.