living organisms see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Superkingdom Eukaryotae see Domain Eukaryota Chatton, 1925
     Kingdom Animalia Linnaeus, 1758 - animals
       Subkingdom Eumetazoa Butschli, 1910 see [unranked] Eumetazoa Bütschli, 1910
         Phylum Echinodermata Bruguière, 1789 - echinoderms
           Subphylum Echinozoa von Zittel, 1895 see Infraphylum Echinozoa Haeckel, in Von Zittell, 1895
             Class Echinoidea (Leske, 1778) - sea urchins and sand dollars
               Subclass Euechinoidea Bronn, 1860
                 Superorder Echinacea Claus, 1876
                   Order Echinoida Troschel, 1872
                     Family Echinometridae Gray, 1855
                       Genus Caenocentrotus H.L. Clark, 1912
                         Caenocentrotus gibbosus (L. Agassiz, in L. Agassiz & Desor, 1846)