Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Nematoda Gegenbaur, 1859 - round worms
     Class Chromadorea Inglis, 1983
       Subclass Plectia Hodda, 2007
         Superorder Rhabditica Hodda, 2007
           Order Spirurida Railliet, 1914
             Suborder Dracunculina Hodda, 2007
               Superfamily Dracunculoidea Stiles, 1907
                 Family Tetanonematidae Skrjabin & Schikhobalova, 1948 see Family Steinertetanonematidae Sokolov, 2010