Phylum Nematoda Gegenbaur, 1859 - round worms
   Class Secernentea Von Linstow, 1905
     Subclass Tylenchia (Thorne, 1949) Inglis, 1983
       Order Tylenchida G. Thorne, 1949
         Suborder Criconematina Siddiqi, 1980
           Superfamily Criconematoidea Taylor, 1936 (1914)
             Family Criconematidae Taylor, 1936 (1914)
               Subfamily Macroposthoniinae Skarbilovich, 1959
                 1 Genus Macroposthonia De Man, 1880
                 2 Genus Criconemoides Taylor, 1936
                 3 Genus Discocriconemella De Grisse & Loof, 1965
                 4 Genus Nothocriconemoides Maas, Loof & De Grisse, 1971
                 5 Genus Xenocriconemella De Grisse & Loof, 1965