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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 |
| SPIRE, SUNKEN | The condition of having the POSTNUCLEAR WHORLS higher than the spire, or NUCLEAR WHORLS (the nuclear whorls are not hidden from view, as with an involute spire); see also: SPIRE, INVOLUTE. | |
| Copyright ©Paul S. Mikkelsen, All Rights Reserved | Return to Home Page | Return to Top | Over 1700 Terms in the Glossary! |