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 Acanthocephala Kohlreuther, 1771 - acanthocephalans see [unranked] Acanthocephala Kohlreuther, 1771
           Class Palaeacanthocephala (Meyer, 1931)
             Order Polymorphida Petrochenko, 1956
               Family Plagiorhynchidae Meyer, 1931
                 Subfamily Porrorchinae Golvan, 1956
                   1 Genus Porrorchis Fukui, 1929
                   2 Genus Lueheia Travassos, 1921
                   3 Genus Pseudolueheia Schmidt & Kuntz, 1967
                   4 Genus Owilfordia Schmidt & Kuntz, 1967
                   5 Genus Pseudogordiorhynchus Golvan, 1957
                   6 Genus Oligoterorhynchus Monticelli, 1915