Ostreidae

Ostreidae, the family of Mollusca (q.v.), of the class Lamellibranchiata (q.v.), of which the common oyster (Ostrea edulis, Linn.) is the type. The two other principal members are the genera Anemia and Placuna. The family ranges from the Carboniferous period onward. It is typically marine, but some specimens live in only slightly brackish water.