fossil marine animal genera Linnaeus, 1758 - animals
   Phylum Arthropoda Siebold, 1848 - arthropods
     Crustacea Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960
       1 Class †incertae sedis
       2 Class Brachypoda Birshteyn, 1960 see Order Brachypoda Birshteyn, 1960
       3 Class Branchiopoda Latreille, 1817 - branchiopods
       4 Class Copepoda H. Milne-Edwards, 1840 see Subclass Copepoda H. Milne-Edwards, 1840
       5 Class Cirripedia (Rafinesque, 1816) see Infraclass Cirripedia Burmeister, 1834
       6 Class Remipedia Yager, 1981 - remipedes
       7 Class Malacostraca Latreille, 1802
       8 Class Ostracoda Latreille, 1802 - ostracods