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

by Paul S. Mikkelsen

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Term Definition

PERIPHERY, ANGULATE   Having the outer whorl midway between CARINATE and ROUNDED.

PERIPHERY, BICARINATE   Having two CARINA or ridges at the outer edge of a whorl.

PERIPHERY, CARINATE   Having one CARINA or ridge at the outer edge of a whorl.

PERIPHERY, ROUND   Having the outer edge of a WHORL smoothly curved.

PERIPHERY, WHORL   [need definition].

WHORL PERIPHERY   The part of a GASTROPOD shell that is farthest from the AXIS of coiling; = WHORL PERIPHERY. See illustration: Composite Gastropod. See also: PERIPHERY, (types); WHORL, (types).

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