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
               Family Tylenchidae Örley, 1880
                 Subfamily Tylenchinae Örley, 1880
                   01 Genus Tylenchus Bastian, 1865
                   02 Genus Aglenchus (Andrássy, 1954) Meyl, 1961
                   03 Genus Cervoannulatus Bajaj, 1998
                   04 Genus Coslenchus Siddiqi, 1978
                   05 Genus Cucullitylenchus Huang & Raski, 1986
                   06 Genus Discotylenchus Rafiq Siddiqi, 1980
                   07 Genus Filenchus (Andrássy, 1954) Meyl, 1961
                   08 Genus Fraglenchus M.R. Siddiqi, 2000
                   09 Genus Irantylenchus (Kheiri, 1972) Andrássy, 1976
                   10 Genus Polenchus Andrássy, 1980
                   11 Genus Sakia Khan, 1964