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  Animalia
    Bilateria
     Deuterostomia
      Echinodermata
             [Eleutherozoa]
             [Pelmatoza]
             [Pelmatozoa]
        Asterozoa
               [Stelleroidea]
            Asteroidea
                  Valvatacea
                    Paxillosida
                           [Platyasterida]
                            Ctenodiscidae
                                   [Ctenodiscinae]
                                     Ctenodiscus
                                           [Anodiscus]
                                             Ctenodiscus australis
                                             Ctenodiscus caudatus
                                             Ctenodiscus crispatus
                                                   [Anodiscus crispatus]
                                                   [Asterias arancia]
                                                   [Asterias crispata]
                                                   [Asterias polaris]
                                                   [Astropecten corniculatus]
                                                   [Astropecten polaris]
                                                   [Ctenodiscus corniculatus]
                                                   [Ctenodiscus krausei]
                                                   [Ctenodiscus polaris]
                                                   [Ctenodiscus pygmaeus]
                                             Ctenodiscus orientalis
                                             Ctenodiscus procurator

Problematic Rooting (388951)
                                             Anodiscus peruvianus
                                             Anodiscus xanthophyllus