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 Eoacanthocephala Van Cleave, 1936
             Order Neoechinorhynchida Southwell & Macfie, 1925
               Family Neoechinorhynchidae Van Cleave, 1919
                 1 Subfamily Neoechinorhynchinae Ward, 1917
                 2 Subfamily Atactorhynchinae Petrochenko, 1956
                 3 Subfamily Gracilisentinae Petrochenko, 1956
                 4 Subfamily Eocollinae Petrochenko, 1956