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 Mollusca Linnaeus, 1758 - molluscs
           Class Polyplacophora Blainville, 1816 - chitons
             Subclass Neoloricata Bergenhayn, 1955
               Order Acanthochitonida Bergenhayn, 1930 see Suborder Acanthochitonina Bergenhayn, 1930
                 Family Acanthochitonidae Pilsbry, 1893
                   1 Genus Acanthochitona Gray, 1821
                   2 Genus Cryptoconchus Burrow, 1815
                   3 Genus Cryptoplax Blainville, 1818
                   4 Genus Cryptochiton von Middendorff, 1847
                   5 Genus Craspedochiton Shuttleworth, 1853