Multicrustacea
The clade Multicrustacea constitutes the largest superclass of crustaceans, containing approximately four-fifths of all described non-hexapod crustacean species, including crabs, lobsters, crayfish, shrimp, krill, prawns, woodlice, barnacles, copepods, amphipods, mantis shrimp and others. The largest branch of Multicrustacea is the class Malacostraca.
Classification
Superclass Multicrustacea Regier, Shultz, Zwick, Hussey, Ball, Wetzer, Martin & Cunningham, 2010- * Class Unknown
- ** Order Unknown
- *** Family Priscansermarinidae Newman, 2004
- * Class Copepoda Milne-Edwards, 1840 – Copepods
- ** Infraclass Neocopepoda Huys & Boxshall, 1991
- *** Superorder Gymnoplea Giesbrecht, 1882
- **** Order Calanoida Sars GO, 1903
- *** Superorder Podoplea Giesbrecht, 1882
- **** Order Cyclopoida Burmeister, 1834
- **** Order Gelyelloida Huys, 1988
- **** Order Harpacticoida G. O. Sars, 1903
- **** Order Misophrioida Gurney, 1933
- **** Order Monstrilloida Sars, 1901
- **** Order Mormonilloida Boxshall, 1979
- **** Order Polyarthra Lang, 1944
- **** Order Siphonostomatoida Thorell, 1859
- ** Infraclass Progymnoplea Lang, 1948
- *** Order Platycopioida Fosshagen, 1985
- * Class Thecostraca Gruvel, 1905
- ** Subclass Ascothoracida Lacaze-Duthiers, 1880
- *** Order Dendrogastrida Grygier, 1987
- *** Order Laurida Grygier, 1987
- ** Subclass Cirripedia Burmeister, 1834
- *** Infraclass Acrothoracica Gruvel, 1905
- **** Order Cryptophialida Kolbasov, Newman & Hoeg, 2009
- **** Order Lithoglyptida Kolbasov, Newman & Hoeg, 2009
- *** Infraclass Rhizocephala Müller, 1862
- *** Infraclass Thoracica Darwin, 1854
- **** Superorder Phosphatothoracica Gale, 2019
- ***** Order Iblomorpha Buckeridge & Newman, 2006
- ***** Order Eolepadomorpha Chan et al., 2021
- **** Superorder Thoracicalcarea Gale, 2015
- ***** Order Balanomorpha Pilsbry, 1916
- ***** Order Calanticomorpha Chan et al., 2021
- ***** Order Pollicipedomorpha Chan et al., 2021
- ***** Order Scalpellomorpha Buckeridge & Newman, 2006
- ***** Order Verrucomorpha Pilsbry, 1916
- ***** Order Archaeolepadomorpha Chan et al., 2021
- ***** Order Brachylepadomorpha Withers, 1923
- ** Subclass Facetotecta Grygier, 1985
- * Class Tantulocarida Boxshall & Lincoln, 1983
- ** Family Basipodellidae Boxshall & Lincoln, 1983
- ** Family Cumoniscidae Nierstrasz & Brender à Brandis, 1923
- ** Family Doryphallophoridae Huys, 1991
- ** Family Microdajidae Boxshall & Lincoln, 1987
- ** Family Onceroxenidae Huys, 1991
- * Class Malacostraca Latreille, 1802
- ** Subclass Eumalacostraca Grobben, 1892
- *** Superorder Eucarida Calman, 1904
- **** Order Decapoda Latreille, 1802 – crabs, lobsters, crayfish, shrimp and prawns
- **** Order Euphausiacea Dana, 1852 – krill
- *** Superorder Peracarida Calman, 1904
- **** Order Amphipoda Latreille, 1816 – amphipods
- **** Order Bochusacea Gutu & Iliffe, 1998
- **** Order Cumacea Krøyer, 1846 – comma shrimp
- **** Order Ingolfiellida Hansen, 1903
- **** Order Isopoda Latreille, 1817 – isopods
- **** Order Lophogastrida Sars, 1870 – lophogastrids
- **** Order Mictacea Bowman, Garner, Hessler, Iliffe & Sanders, 1985 – mictaceams
- **** Order Mysida Haworth, 1825 – mysids
- **** Order Pygocephalomorpha
- **** Order Spelaeogriphacea Gordon, 1957 – spelaeogriphaceans
- **** Order Stygiomysida Tchindonova, 1981 – stygiomysids
- **** Order Tanaidacea Dana, 1849 – tanaids
- **** Order Thermosbaenacea Monod, 1927 – thermosbaenaceae
- *** Superorder Syncarida Packard, 1879
- **** Order Anaspidacea Calman, 1904
- **** Order Bathynellacea Chappuis, 1915
- **** Order Palaeocaridacea Brooks, 1962
- ** Subclass Hoplocarida Calman, 1904
- *** Order Stomatopoda Latreille, 1817 – mantis shrimp
- ** Subclass Phyllocarida Packard, 1879
- *** Order Archaeostraca Claus, 1888
- *** Order Canadaspidida Novozhilov, 1960
- *** Order Hoplostraca Schram, 1973
- *** Order Hymenostraca Rolfe, 1969
- *** Order Leptostraca Claus, 1880
- *** Genus Nothozoe Barrande, 1872
- *Incertae sedis
- ** Order Cyclida