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

by Paul S. Mikkelsen

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Search results for:   OPERCULUM, ANNULATE       1 term was found.

Term	Definition

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OPERCULUM, ANNULATE		An OPERCULUM with a central nucleus, or nearly so, with other layers surrounding it in flattened rings. See also: MULTISPIRAL.

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Over 1700 Terms in the Glossary!