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

by Paul S. Mikkelsen

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Term Definition

MESOPLAX   One of the ACCESSORY PLATES in the Pholadacea, that straddles the two valves at the beaks; a transversely elongated accessory plate lying athwart the umbonal region in some Pholadidae; see also: CALLUM; HYPOPLAX; METAPLAX; SIPHONOPLAX.
Photo: Martesia striata (Linne, 1758)

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