Phylum Arthropoda Siebold, 1848 - arthropods Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777 Class Ostracoda Latreille, 1802 - ostracods Subclass Myodocopa Sars, 1866 1 Order Myodocopida Sars, 1866 2 Order Halocyprida Dana, 1853