Central Taxonomic Thesaurus
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Organism
  Animalia
         [Metazoa]
      Echinodermata
             [Eleutherozoa]
             [Pelmatoza]
             [Pelmatozoa]
        Echinozoa
            Echinoidea
              Euechinoidea
                Irregularia
                  Atelostomata
                    Spatangoida
                           [Amphisternata]
                           [Spatangidea]
                      Holasterina
                            Holasteridae
                                     Holaster
This project is supported by the National Science Foundation's Division of Environmental Biology through an award titled "Advancing Revisionary Taxonomy and Systematics: Integrative Research and Training in Tropical Taxonomy" (DEB-1456674). Any opinions, findings, and conclusions or recommendations expressed on this website are those of the authors and do not necessarily reflect the views of the National Science Foundation.