Palaeos		Malacostraca
Arthropoda		Classification

Malacostraca: Classification

CRUSTACEA
|
`--MALACOSTRACA
        |--Phyllocarida
        `--+--Hoplocarida
           `--Eumalacostraca
              |--Syncarida
              |--Peracarida
              `--Eucarida
                 `--DECAPODA

The following very provisional classification is copied from Wikipedia, and does not include many extinct taxa

Superclass Crustacea
   Class Malacostraca Latreille, 1802
      Subclass Phyllocarida Packard, 1879
            Order † Archaeostraca Claus 1888
            Order † Hoplostraca Schram, 1973
            Order Leptostraca Claus, 1880
      Subclass Hoplocarida Calman, 1904
            Order † Aeschronectida Schram, 1969
            Order † Archaeostomatopoda Schram, 1969
            Order Stomatopoda Latreille, 1817
      Subclass Eumalacostraca Grobben, 1892
         Superorder Syncarida Packard, 1885
            Order † Palaeocaridacea Brooks, 1979
            Order Bathynellacea Chappuis, 1915
            Order Anaspidacea Calman, 1904
         Superorder Peracarida Calman, 1904
            Order Pygocephalomorpha (shrimp-like basal eumalacastruca - Carboniferous to Permian)
            Order Spelaeogriphacea Gordon, 1957
            Order Thermosbaenacea Monod, 1927
            Order Lophogastrida Sars, 1870
            Order Mysida Haworth, 1825 (= Mysidacea)
            Order Mictacea Bowman et al., 1985
            Order Amphipoda Latreille, 1816 (sand hoppers and sand fleas. Tertiary to Recent.)
            Order Isopoda Latreille, 1817 (Terrestrial wood lice and pill bugs and their marine relatives; Carboniferous - Recent.)
            Order Tanaidacea Dana, 1849
            Order Cumacea Krøyer, 1846
         Superorder Eucarida Calman, 1904
            Order Euphausiacea Dana, 1852
            Order Amphionidacea Williamson, 1973
            Order Decapoda Latreille, 1802 (see next unit)