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Organism
  Animalia
         [Metazoa]
      Nematoda
             [Adenophorea]
             [Nemata]
             [Secernentea]
            Chromadorea
                    Ascaridida
                            Atractidae
                                     Atractis
                                             Atractis carolinae
                                             Atractis scelopori
                                     Rondonia