Noun anostraca has 1 sense
  1. Anostraca, order Anostraca - small aquatic crustaceans lacking a carapace: fairy shrimps; brine shrimps
    --1 is a kind of animal order
    --1 is a member of Branchiopoda, subclass Branchiopoda
    --1 has members: Artemia, genus Artemia, Chirocephalus, genus Chirocephalus
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