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

by Paul S. Mikkelsen

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Term Definition

PHLEBOEDESIS   A process proposed by Lankester, who held that molluscs were derived from segmented annelids that had already acquired a full coelom, in which enlarged blood spaces encroached on the COELOM and reduced it to its molluscan dimensions; see also: PAEDOMORPHOSIS.

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