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
                 Family Ptychobothriidae Lühe, 1902 see Family Bothriocephalidae Blanchard, 1849
                   1 Genus Senga Dollfus, 1934
                   2 Genus Polyonchobothrium Diesing, 1854
                   3 Genus Clestobothrium Lühe, 1899
                   4 Genus Ptychobothrioides
                   5 Genus Ptychobothrium Lönnberg, 1889
                   6 Genus Plicatobothrium Cable & Michaelis, 1967