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Noun1.Amphineura - a class of GastropodaAmphineura - a class of Gastropoda    
class Gasteropoda, class Gastropoda, Gasteropoda, Gastropoda - snails and slugs and their relatives
class - (biology) a taxonomic group containing one or more orders
References in periodicals archive ?
More usually, Aplacophora was placed with the Polyplacophora as Aculifera or Amphineura (see especially Hoffman, 1949).
2002): The Neogene Amphineura and Bivalvia (Protobranchia and Pteriomorphia) from Kallo and Doel (Oostvlaanderen Belgium).