Taxonomic information: Diadematoida

the root (no rank)
   Eukaryota (domain)
      Metazoa (kingdom)
         Echinodermata (phylum)
            Echinozoa (superclass)
               Echinoidea (class)
                  Euechinoidea (subclass)
                     Diadematoida (order)
                        [hide inferior taxa]
                        Diadematidae (family)

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