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

by Paul S. Mikkelsen

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Term Definition

GROWING EDGE   The outermost edge of the outer APERTURAL LIP of a gastropod shell, or the margin of a bivalve shell.

VARICAL WING   An expanded, thin, blade-like or flange-like projection or extension of the VARIX.

WING   A more or less elongate triangular terminal part of the HINGE area in shells of such bivalve groups as the Pectinacea and the Pteriacea; = EAR; see also: VARICAL WING.

WINGED   Having a wing or wings.

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