Nemathelminthes Gegenbaur, 1859 see Phylum Nematoda Gegenbaur, 1859
   Class Nematoda Gegenbaur, 1859
     Subclass Torquentia
       Order Araeolaimida see Suborder Araeolaimina De Coninck, 1965
         Suborder Araeolaimina De Coninck, 1965
           42 Family Plectidae Oerley, 1880
           43 Family Leptolaimidae Oerley, 1880
           44 Family Halaphanolaimidae de Coninck & Schuurmans Stekhoven, 1933
           45 Family Diplopeltidae Filipjev, 1918
           46 Family Rhabdolaimidae Chitwood, 1951