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Organism
  Animalia
         [Metazoa]
      Echinodermata
             [Eleutherozoa]
             [Pelmatoza]
             [Pelmatozoa]
        Asterozoa
               [Stelleroidea]
            Asteroidea
                   [Concentricycloidea]
                  Valvatacea
                    Valvatida
                      Tumulosina
                            Sphaerasteridae
                                     Podosphaeraster
                                             Podosphaeraster polyplax