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Organism
  Animalia
         [Metazoa]
      Echinodermata
             [Eleutherozoa]
             [Pelmatoza]
             [Pelmatozoa]
        Asterozoa
               [Stelleroidea]
            Ophiuroidea
                    Phrynophiurida
                      Euryalina
                            Asteronychidae
                                     Asteronyx
                                           [Ophiuropsis]
                                             Asteronyx longifissus
                                             Asteronyx loveni
                                                   [Asteronyx dispar]
                                                   [Asteronyx lymani]
                                             Asteronyx luzonicus
                                     Astrodia
                                             Astrodia excavata
                                                   [Asteronyx excavata]
                                             Astrodia plana
                                                   [Asteronyx plana]
                                             Astrodia tenuispina
                                                   [Asteronyx tenuispina]
                                                   [Astronyx tenuispina]
                                     Astronebris
                                             Astronebris tatafilius
                                     Astronyx
                                     Ophioschiza