An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms

by Paul S. Mikkelsen

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Term Definition

RETRACTED   In gastropods, the state of the animal being withdrawn into its shell; also the condition of its TENTACLES being withdrawn or (in NUDIBRANCHS) a BRANCHIAL PLUME being withdrawn. In bivalves, the condition of the clam having its FOOT and/or SIPHONS withdrawn. See also: EXTENDED.

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