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Organism
  Animalia
         [Metazoa]
      Echinodermata
             [Eleutherozoa]
             [Pelmatoza]
             [Pelmatozoa]
        Asterozoa
               [Stelleroidea]
            Asteroidea
                   [Concentricycloidea]
                  Valvatacea
                    Valvatida
                            Asterodiscididae
                                     Amphiaster
                                             Amphiaster insignis
                                     Asterodiscides
                                           [Asterodiscus]
                                             Asterodiscides belli
                                                   [Asterodiscides elegans belli]
                                             Asterodiscides elegans
                                               Asterodiscides elegans elegans
                                             Asterodiscides grayi
                                             Asterodiscides helonotus
                                                   [Asterodiscus helonotus]
                                             Asterodiscides lacrimulus
                                             Asterodiscides macroplax
                                             Asterodiscides soleae
                                                   [Asterodiscides helenotus]
                                             Asterodiscides truncatus
                                                   [Asterodiscus truncatus]
                                             Asterodiscides tuberculosus
                                                   [Asterodiscus tuberculosus]
                                     Paulia
                                             Paulia horrida
                                     Pauliastra
                                     Uokeaster