Fossil group

Bivalves (lamellibranchs)

Molluscs · Cambrian – Recent

Molluscs enclosed in two hinged, usually mirror-image valves — clams, oysters, mussels, scallops and their kin. They filter-feed or burrow, live in seas and fresh water, and their shells are common from the Cambrian to today.

A broad fossil group rather than a single taxon — the units below record it among their fauna or flora.