Conchifera :: Conchifera (n. pl.) That class of Mollusca which includes the bivalve shells; the Lamellibranchiata. See Mollusca.
Conchiform :: Conchiform (a.) Shaped like one half of a bivalve shell; shell-shaped.
Conchite :: Conchite (n.) A fossil or petrified conch or shell.
Conchitic :: Conchitic (a.) Composed of shells; containing many shells.