Nemathelminthes Gegenbaur, 1859 see Phylum Nematoda Gegenbaur, 1859
   Class Nematoda Gegenbaur, 1859
     Subclass Penetrantia
       Order Dorylaimida Pearse, 1942
         Suborder Dorylaimina Chitwood, 1933
           Family Nordiidae Jairajpuri & Siddiqi, 1964