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 Tylenchuloidea (Skarbilovich, 1947) Raski & Siddiqi, 1975 see Superfamily Criconematoidea Taylor, 1936 (1914)
             Family Paratylenchidae Thorne, 1949
               Subfamily Paratylenchinae Thorne, 1949
                 1 Genus Paratylenchus Micoletzky, 1922
                 2 Genus Cacopaurus Thorne, 1943