Phylum Arthropoda Siebold, 1848 - arthropods
   Subphylum Crustacea Brünnich, 1772 - crustaceans see Superclass Crustacea Pennant, 1777
     Class Ostracoda Latreille, 1802 - ostracods
       Subclass Podocopa Sars, 1866
         Order Podocopida (Sars, 1866) G.W. Müller, 1894
           Suborder Cytherocopina Baird, 1850
             Superfamily Cytheroidea Baird, 1850
               01 Family Bythocytheridae Sars, 1866
               02 Family Cytheridae Baird, 1850
               03 Family Cytherideidae Sars, 1925
               04 Family Cytheromatidae Elofson, 1939
               05 Family Cytheruridae Müller, 1894
               06 Family Entocytheridae Hoff, 1942
               07 Family Eucytheridae Puri, 1954
               08 Family Hemicytheridae Puri, 1953
               09 Family Kliellidae Schäfer, 1945
               10 Family Krithidae Mandelstam, 1958
               11 Family Leptocytheridae Hanai, 1957
               12 Family Loxoconchidae Sars, 1925
               13 Family Microcytheridae Klie, 1938
               14 Family Neocytherideidae Puri, 1957
               15 Family Paradoxostomatidae Brady & Norman, 1889
               16 Family Pectocytheridae Hanai, 1957
               17 Family Protocytheridae Ljubimova, 1956
               18 Family Psammocytheridae Klie, 1938
               19 Family Schizocytheridae Howe, 1961
               20 Family Terrestricytheridae Schornikov, 1969
               21 Family Thaerocytheridae Hazel, 1967
               22 Family Trachyleberididae Sylvester-Bradley, 1948
               23 Family Xestoleberididae Sars, 1928