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 Amphipoda Latreille, 1816 - amphipods
           Order †Anthracocaridacea see Suborder Anthracocaridomorpha Sieg, 1980
           Order Cumacea Krøyer, 1846 - cumaceans
           Order Isopoda Latreille, 1817 - isopods
           Order Mictacea Bowman et al., 1985 - mictaceans
           Order Mysidacea Haworth, 1825 see Order Mysida Haworth, 1825
           Order Spelaeogriphacea Gordon, 1957 - spelaeogriphaceans
           Order Tanaidacea Dana, 1849 - tanaids
           Order Thermosbaenacea Monod, 1927 - thermosbaenaceans