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 Anguinata Siddiqi, 2000
             Superfamily Anguinoidea Nicoll, 1935 (1926)
               Family Anguinidae Nicoll, 1935 (1926)
                 Subfamily Anguininae Nicoll, 1935 (1926)
                   01 Genus Anguina Scopoli, 1777
                   02 Genus Diptenchus Khan, Chawla & Seshadri, 1969
                   03 Genus Ditylenchus Filipjev, 1936
                   04 Genus Indoditylenchus Sinha, Choudhury & Baqri, 1985
                   05 Genus Nothanguina Whitehead, 1959
                   06 Genus Nothotylenchus Thorne, 1941
                   07 Genus Orrina Brzeski, 1981
                   08 Genus Pseudhalenchus Tarjan, 1958
                   09 Genus Pterotylenchus Siddiqi & Lenné, 1984
                   10 Genus Safianema Siddiqi, 1980
                   11 Genus Subanguina Paramonov, 1967