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 Platyhelminthes Gegenbaur, 1859 - flatworms
           Class Cestoda - tapeworms see Infraclass Cestoda
             Subclass Eucestoda - eucestodes see [unranked] Eucestoda
               Order Trypanorhyncha Diesing, 1863
                 Suborder Acystidea see Suborder Trypanobatoida Olson, Caira, Jensen, Overstreet, Palm & Beveridge, 2010
                   Family Hepatoxylidae see Family Sphyriocephalidae Pintner, 1913
                     Genus Hepatoxylon Bosc, 1811
                       Hepatoxylon squali Bosc, 1811