Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777 Class Malacostraca Latreille, 1802 Subclass Phyllocarida Packard, 1879 - leptostracans 1 Order Leptostraca Claus, 1880 - sea fleas