Phylum Arthropoda Siebold, 1848 - arthropods
   Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
     Class Malacostraca Latreille, 1802
       Subclass Eumalacostraca Grobben, 1892
         Superorder Eucarida Calman, 1904
           Order Decapoda Latreille, 1802 - decapods
             Suborder Pleocyemata Burkenroad, 1963
               Infraorder Astacidea Latreille, 1802 - crayfish and chelate lobsters
                 1 Superfamily Glypheoidea Winkler, 1883
                 2 Superfamily Enoplometopoidea de Saint Laurent, 1988
                 3 Superfamily Nephropoidea Dana, 1852
                 4 Superfamily Astacoidea Latreille, 1802
                 5 Superfamily Parastacoidea Huxley, 1879 see Superfamily Astacoidea Latreille, 1802