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
           1 Order Spelaeogriphacea Gordon, 1957 - spelaeogriphaceans
           2 Order Thermosbaenacea Monod, 1927 - thermosbaenaceans
           3 Order Lophogastrida Sars, 1870 - lophogastrids
           4 Order Mysida Haworth, 1825 - mysids
           5 Order Mictacea Bowman et al., 1985 - mictaceans
           6 Order Amphipoda Latreille, 1816 - amphipods
           7 Order Isopoda Latreille, 1817 - isopods
           8 Order Tanaidacea Dana, 1849 - tanaids
           9 Order Cumacea Krøyer, 1846 - cumaceans