An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
OPERCULUM, MULTISPIRAL |
An OPERCULUM consisting of radiating WHORLS of uniform width; = OPERCULUM, ANNULATE; = POLYGYROUS SPIRAL. For illustrations, see The Humble Operculum website page: Operculum Structures. |
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