Central Taxonomic Thesaurus

Taxon Search
  Animalia
      Echinodermata
        Echinozoa
            Echinoidea
              Euechinoidea
                Irregularia
                 Atelostomata
                    Spatangoida
                            Toxasteridae
                                     Macraster
                                           [Douvillaster]
                                             Macraster elegans
                                                   [Hemiaster elegans]