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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
| Term | Definition |
| CARDINAL TOOTH | The main or largest teeth (usually) in a bivalve HINGE, located just below the UMBONES. See illustration: Composite Bivalve. See also: TOOTH, LATERAL. | |
| HINGE TOOTH | Shelly STRUCTURE in bivalves (usually on of a series) adjacent to dorsal margin and received in socket in opposite VALVE; hinge teeth serve to hold valves in position when closed. | |
| INSERTION TEETH | Articulating processes that unite the valves of a chiton to the GIRDLE or INSERTION PLATES. | |
| RADULA (pl. RADULAE) |
A ribbon which supports rows of chitinous teeth; this characteristic is found only in molluscs; see also:
ASCUS SAC;
CUSPIDOBLAST;
ODONTOPHORE;
RADULA FORMULA;
UNISERIATE. Mikkelsen, P.S. 1985. A rapid method for slide mounting of minute radulae, with a bibliography of radula mounting techniques. Nautilus 99(2-3):62-65. [request a reprint! or download a copy] |
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| TEETH |
In bivalves, the shelly protuberances on the dorsal margin of a VALVE which fit into corresponding sockets of the opposite valve. In gastropods, the RADULA. In cephalopods, see: BEAK. |
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