An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
POLYGYROUS | Composed of many turns (as in the OPERCULUM of DIOTOCARDIANS); see also: OLIGOGYROUS. | |
POLYGYROUS SPIRAL | See: OPERCULUM, MULTISPIRAL. | |
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