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 Pseudophyllidea Lankester, 1877
                 1 Family Cephalochlamydidae Yamaguti, 1959
                 2 Family Haplobothriidae Cooper, 1917
                 3 Family Diphyllobothriidae Lühe, 1910
                 4 Family Ptychobothriidae Lühe, 1902 see Family Bothriocephalidae Blanchard, 1849
                 5 Family Bothriocephalidae Blanchard, 1849
                 6 Family Echinophallidae Schumacher, 1914
                 7 Family Amphicotylidae see Family Triaenophoridae Lönnberg, 1889
                 8 Family Triaenophoridae Lönnberg, 1889
                 9 Family Parabothriocephalidae see Family Echinophallidae Schumacher, 1914