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
           1 Infraorder Tylenchataᵀ (Thorne, 1949) M.R. Siddiqi, 2000
           2 Infraorder Anguinata Siddiqi, 2000