Definition of Pseudolamellibranchia
in some classifications
: an order of Lamel libranchia comprising bivalve mollusks (as scallops, pearl oysters, true oysters) having gills with interfilamentary and interlamellar junctions poorly developed, the mantle edges entirely open, and the anterior adductor muscle usually wanting
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Origin and Etymology of pseudolamellibranchia
New Latin, from pseud- + Lamellibranchia
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