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An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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| by Paul S. Mikkelsen | |||
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| Term | Definition |
| FREE | Refers to a shell which is not ATTACHED (e.g., to substrate); see also: VALVE, FREE. | |
| FREE EDGE | The outer margin or OUTER APERTURAL LIP of a gastropod shell. | |
| FREE VALVE | In attached bivalves, the valve which is not attached to the substrate; = UPPER VALVE. | |
| Copyright ©Paul S. Mikkelsen, All Rights Reserved | Return to Home Page | Return to Top | Over 1700 Terms in the Glossary! |