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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 |
| NUCLEAR WHORL | The early larval shell, sometimes distinguished from the PROTOCONCH. See illustration: Composite Gastropod. See also: ADULT WHORLS; VELICONCH. | |
| POSTNUCLEAR WHORL | Any turn of a GASTROPOD shell formed after the formation of the NUCLEUS. | |
| Copyright ©Paul S. Mikkelsen, All Rights Reserved | Return to Home Page | Return to Top | Over 1700 Terms in the Glossary! |