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
                 Family Leptochelidae Lang, 1973 see Family Leptocheliidae Lang, 1973