1) Family pectinidae 2) Mollusk family 3) Scallops 
Pectinidae (from the Latin pecten meaning comb), common name scallops, are a family of saltwater clams, marine bivalve mollusks in the superfamily Pectinoidea. Scallops are a cosmopolitan family of bivalves, found in all of the world`s oceans, though never in freshwater. (Other families within the same superfamily, Pectinoidea, share a somewhat s....
[n] - scallops
family Pectinidae noun scallops