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 Tanaidacea Dana, 1849 - tanaids
             Suborder Tanaidomorpha Sieg, 1980
               Superfamily Paratanaoidea Lang, 1949
                 1 Family Anarthruridae Lang, 1971
                 2 Family Leptochelidae Lang, 1973 see Family Leptocheliidae Lang, 1973
                 3 Family Nototanaidae Sieg, 1976
                 4 Family Paratanaidae Lang, 1949
                 5 Family Pseudotanaidae Sieg, 1976
                 6 Family Pseudozeuxidae Sieg, 1982
                 7 Family Typhlotanaidae Sieg, 1984