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 Cumacea Krøyer, 1846 - cumaceans
             1 Family Bodotriidae T. Scott, 1901
             2 Family Ceratocumatidae Calman, 1905
             3 Family Diastylidae Bate, 1856
             4 Family Gynodiastylidae Stebbing, 1912
             5 Family Lampropidae Sars, 1878
             6 Family Leuconidae Sars, 1878
             7 Family Nannastacidae Bate, 1866
             8 Family Pseudocumatidae Sars, 1878