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  Animalia
    Bilateria
     Deuterostomia
      Echinodermata
             [Eleutherozoa]
             [Pelmatoza]
             [Pelmatozoa]
        Asterozoa
               [Stelleroidea]
            Ophiuroidea
                    Phrynophiurida
                      Ophiomyxina
                            Ophiomyxidae
                                     Astrogymnotes
                                             Astrogymnotes catastica
                                     Ophiocynodus
                                     Ophiomyxa
                                             Ophiomyxa flaccida
                                             Ophiomyxa pentagona
                                             Ophiomyxa tumida
                                     Ophioscolex
                                             Ophioscolex corynetes
                                                   [Ophiocynodus corynetes]
                                             Ophioscolex glacialis
                                             Ophioscolex purpureus
                                             Ophioscolex quadrispinus
                                     Ophiosyzygus
                                             Ophiosyzygus disacanthus