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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 |
| PILLAR | The part of the body whorl of the gastropod shell adjacent to the COLUMELLAR LIP; also, sometimes, the columella. In bivalves, an inward extension of outer shell layer extending longitudinally up the lower valve in HIPPURITIDS; see also: PSEUDOPILLAR. | |
| PSEUDOPILLAR | Low, broad, inward projection of shell wall (present in some RADIOLITIDS); see also: PILLAR. | |
| Copyright ©Paul S. Mikkelsen, All Rights Reserved | Return to Home Page | Return to Top | Over 1700 Terms in the Glossary! |