An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms

by Paul S. Mikkelsen

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Term Definition

LUNULE   A heart-shaped (CORDIFORM), depressed area in front of the BEAKS of a bivalve. See illustration: Composite Bivalve. See also: ESCUTCHEON.

See: Bivalve terminology, Anatomy of bivalves by Marlo Krisberg.
   


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