Kingdom Animalia Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
       Class Malacostraca Latreille, 1802
         Subclass Eumalacostraca Grobben, 1892
           Superorder Peracarida Calman, 1904
             Order Isopoda Latreille, 1817 - isopods
               Suborder Gnathiidea Hansen, 1916
                 Genus Gnathia Leach, 1814
                 Genus Paragnathia Omer-Cooper & Omer-Cooper, 1916