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 Cystidea see Suborder Trypanoselachoida Olson, Caira, Jensen, Overstreet, Palm & Beveridge, 2010
                   01 Family Dasyrhynchidae Dollfus, 1935
                   02 Family Mustelicolidae Dollfus, 1969 see Family Lacistorhynchidae Guiart, 1927
                   03 Family Lacistorhynchidae Guiart, 1927
                   04 Family Pterobothriidae Pintner, 1931
                   05 Family Gymnorhynchidae Dollfus, 1935
                   06 Family Otobothriidae Dollfus, 1942
                   07 Family Rhinoptericolidae Carvajal & Campbell, 1975
                   08 Family Tetrarhynchobothriidae Dollfus, 1969 see Family Eutetrarhynchidae Guiart, 1927
                   09 Family Gilquiniidae Dollfus, 1935
                   10 Family Eutetrarhynchidae Guiart, 1927
                   11 Family Hornelliellidae Yamaguti, 1954
                   12 Family Pseudogrillotiidae see Family Lacistorhynchidae Guiart, 1927