Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Nematoda Gegenbaur, 1859 - round worms
     Class Enoplea Inglis, 1983
       Subclass Enoplia Pearse, 1942
         Superorder Enoplica Hodda, 2007
           Order Ironida Hodda, 2007
             Suborder Rhabdolaimina Hodda, 2011 [monotypic]
               1 Superfamily Rhabdolaimoidea Chitwood, 1951