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
                 Superfamily Astacoidea Latreille, 1802
                   1 Family Astacidae Latreille, 1802
                   2 Family Cambaridae Hobbs, 1942