An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
LIP, INNER | The portion of the apertural margin of a gastropod shell opposite the outer lip and abutting the earliest portion of the body whorl; = LABIUM; the combination of the COLUMELLAR LIP and the PARIETAL LIP. | |
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