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 Gnathostomatina Skrjabin & Ivaschkin, 1973 [monotypic]
               Superfamily Gnathostomatoidea Railliet, 1895 [monotypic]
                 1 Family Gnathostomatidae Railliet, 1895