fossil marine animal genera Linnaeus, 1758 - animals Phylum Arthropoda Siebold, 1848 - arthropods Crustacea Brünnich, 1772 see [unranked] Crustaceomorpha Chernyshev, 1960 Class Malacostraca Latreille, 1802 Order Leptostraca Claus, 1880 - sea fleas