Kingdom [Animalia] Linnaeus, 1758 - animals
   Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997, nom. cl. inval. - ecdysozoans see Clade Ecdysozoa Aguinaldo, Turbeville, Linford, Rivera, Garey, Raff & Lake 1997 [Lake, Halanych, Servin & Garey 2020]
     Panarthropoda Nielsen, 1995 - panarthropods
       Phylum Onychophora Grube, 1853 - velvet worms
         Class Euonychophora Hutchinson, 1930 see Order Euonychophora Hutchinson, 1930
           1 Genus †Helenodora Thompson & Jones, 1980
           2 Family Peripatidae Evans, 1901
           3 Family Peripatopsidae Bouvier, 1907