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

by Paul S. Mikkelsen

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Term Definition

OPERCULUM, PAUCISPIRAL   An OPERCULUM having only a few whorls or turns, of rapidly increasing width; = OLIGOGYROUS SPIRAL; MULTISPIRAL.

For illustrations, see The Humble Operculum website page: Operculum Structures.

PAUCISPIRAL   Having only a few WHORLS or turns, of increasing width; see also: MULTISPIRAL; PLANISPIRAL; CONCENTRIC.

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