An Illustrated and Cross-Referenced Glossary of Malacological and Conchological Terms |
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by Paul S. Mikkelsen |
Term | Definition |
SIPHONAL CANAL | A complete or incomplete tubular shell extension through which the anterior SIPHON is extended; if protruded, this is called a ROSTRUM; = CAUDAL CANAL; = ANTERIOR CANAL. See illustration: Composite Gastropod. See also: BASAL FOLD; SPOUT. | |
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