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• Domain: Eukaryota () - Whittaker & Margulis,1978
  • Kingdom: Animalia () - Linnaeus, 1758 - animals
    • Subkingdom: Bilateria () - (Hatschek, 1888) Cavalier-Smith, 1983
      • Branch: Deuterostomia () - Grobben, 1908
        • Infrakingdom: Coelomopora () - (Marcus, 1958) Cavalier-Smith, 1998
          • Phylum: Echinodermata () - Klein, 1734 Ex De Brugière, 1789 - Echinoderms
            • Subphylum: Eleutherozoa () - Bell, 1891
              • Infraphylum: Echinozoa () - Haeckel, in Von Zittell, 1895
                • Class: Echinoidea () - Sea Urchins and Sand Dollars
                  • Subclass: Perischoechinoidea ()
                    • Order: Cidaroida ()
                      • Family: Cidaridae () -  
                        • Genus: Cidaris () - (Linnaeus, 1758)
                          • Specific name: alpina
                            • Scientific name: - Cidaris alpina