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
                 1 Family Daniconematidae Moravec & Koie, 1987
                 2 Family Dracunculidae Stiles, 1907
                 3 Family Guyanemidae Petter, 1975
                 4 Family Micropleuridae Baylis & Daubney, 1926
                 5 Family Philometridae Baylis & Daubney, 1926
                 6 Family Phlyctainophoridae Roman, 1965
                 7 Family Skrjabillanidae Shigin & Shigina, 1958
                 8 Family Tetanonematidae Skrjabin & Schikhobalova, 1948 see Family Steinertetanonematidae Sokolov, 2010