Kingdom [Animalia] Linnaeus, 1758 - animals
   Subkingdom Metazoa Haeckel, 1874 see Kingdom Animalia Linnaeus, 1758
     Division Eumetazoa Butschli, 1910 see Subkingdom Eumetazoa Butschli, 1910
       Subdivision Bilateralia
         Phylum Asc-helminthes
           Class Nematoda Gegenbaur, 1859
             Subclass Secernentea
               Order Tylenchida G. Thorne, 1949
                 Genus Aphelenchoides Fischer, 1894
                 Genus Ditylenchus Filipjev, 1936
                 Genus Helicotylenchus Steiner, 1945
                 Genus Heterodera Schmidt, 1871
                 Genus Meloidogyne Goeldi, 1892
                 Genus Paratylenchus Micoletzky, 1922
                 Genus Pratylenchus Filipjev, 1936
                 Genus Rotylenchulus Linford & Oliveira, 1940
                 Genus Rotylenchus Filipjev, 1936
                 Genus Sphaeronema Raski & Sher, 1952
                 Genus Tylenchorhynchus Cobb, 1913
                 Genus Tylenchus Bastian, 1865