Phylum Nematoda Gegenbaur, 1859 - round worms
Class Secernentea Von Linstow, 1905
Subclass Tylenchia (Thorne, 1949) Inglis, 1983
Order Tylenchida G. Thorne, 1949
Suborder Tylenchinaᵀ Chitwood, 1950
Infraorder Tylenchataᵀ (Thorne, 1949) M.R. Siddiqi, 2000
Superfamily Tylenchoideaᵀ Örley, 1880
1 Family Tylenchidae Örley, 1880
2 Family Ecphyadophoridae Skarbilovich, 1959
3 Family Atylenchidae Skarbilovich, 1959
4 Family Tylodoridae Paramonov, 1967