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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
| Term | Definition |
| ANNULATE | Bearing more or less concentric rings, as on the inner surface of a gastropod operculum; see: OPERCULUM, ANNULATE. | |
| OPERCULUM, ANNULATE | An OPERCULUM with a central nucleus, or nearly so, with other layers surrounding it in flattened rings. See also: MULTISPIRAL. | |
| Copyright ©Paul S. Mikkelsen, All Rights Reserved | Return to Home Page | Return to Top | Over 1700 Terms in the Glossary! |