Nuculoida

bivalve order

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In bivalve: Annotated classification
Order Nuculoida Equal shell valves with taxodont hinge teeth; isomyarian; posterior protobranch ctenidia; large labial palps usually with palp proboscides, which effect feeding; foot with flat sole; marine; unattached; infaunal. About 450 living species. Subclass Cryptodonta Hinge either weakly taxodont or edentulous; distinctive shell structure
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