An Illustrated and Cross-Referenced Glossary of
Malacological and Conchological Terms
|by Paul S. Mikkelsen|
A notch or EMBAYMENT in the PALLIAL LINE caused by the attachment of the siphon's retractile muscles. It may be deep, shallow, or absent... depending on the species. See illustration: Composite Bivalve. See also: INTEGROPALLIATE; SINUPALLIATE.
See: Bivalve terminology, Anatomy of bivalves by Marlo Krisberg.
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