Of, relating to, or containing the hinge of the shell of a bivalve mollusc or brachiopod. Cf. cardo, n. 3.

conchiferous.

In a bivalve shell: Of greater breadth than length or height; having the longer diameter transverse to the hinge.

Producing a shell, shell-bearing; sometimes spec. belonging to the Conchifera; bivalve.

Conchology. = transverse, adj. 1c (So in French)

resembling a bivalve of the genus Tellina or family Tellinidae.

= conchiferous, adj. 1 2.

Hollowing out rock or stone: epithet of certain molluscs.

Conchology. Having an ear-shaped projection or process on one or both sides of the umbones or bosses, as in certain bivalves.

= pelecypod, adj.

Of certain lamellibranchs: Having the pallial line deeply incurved or inflected beneath the impression of the posterior adductor muscles, for the…

(a) n. a bivalve mollusc having a shelly tube in addition to the valves of the shell; a tube-shell; (b) adj. having such a tube.

Of, relating to, or characteristic of the class Pelecypoda; relating to bivalve molluscs.

Of the shell of a bivalve mollusc: having the hinge formed by a long series of similar teeth and sockets, typified (in some classification…