- extrapallial space
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(MOLLUSCA: Bivalvia)A narrow muscus-filled space between the mantle lobe and the valve of the shell.
Online Dictionary of Invertebrate Zoology. A.R. Maggenti and S.L. Gardne. 2005.
extrapallial space
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Mollusc shell — Closed and open shells of a marine bivalve, Petricola pholadiformis. A bivalve shell is composed of two hinged valves which are joined by a ligament … Wikipedia
