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 Nemata Cobb, 1919 see Phylum Nematoda Gegenbaur, 1859
           Class Secernentea Von Linstow, 1905
             Subclass Diplogasteria see Subclass Plectia Hodda, 2007
               Order Tylenchida G. Thorne, 1949
                 Suborder Sphaerulariina see Suborder Hexatylina Siddiqi, 1980
                   Superfamily Sphaerularoidea see Superfamily Sphaerularioidea Lubbock, 1861
                     Family Fergusobiidae see Subfamily Fergusobiinae Goodey, 1963
                       Genus Fergusobia (Currie, 1937) Christie, 1941