Between brackets is the number of accepted species
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- Biota
- Kingdom Animalia
- Phylum Acanthocephala
- Phylum Agmata †
- Phylum Animalia (awaiting allocation)
- Phylum Animalia incertae sedis
- Phylum Annelida
- Phylum Arthropoda
- Subphylum Chelicerata
- Subphylum Crustacea
- Class Branchiopoda
- Class Cephalocarida
- Class Crustacea (awaiting allocation)
- Class Crustacea incertae sedis
- Class Ichthyostraca
- Class Malacostraca
- Order Aeschronectida †
- Order Amphionidacea
- Order Amphipoda
- Order Anaspidacea
- Order Angustidontida †
- Order Archaeostraca †
- Order Asellota (awaiting allocation)
- Order Bathynellacea
- Order Belotelsonidea †
- Order Cumacea
- Order Decapoda
- Family Acanthephyridae Bate, 1888
- Family Acanthonychidae accepted as Epialtidae MacLeay, 1838
- Family Aciculopodidae Feldmann & Schweitzer, 2010 †
- Family Acidopsidae Števčić, 2005
- Family Aegeridae Münster, 1839 †
- Family Aeglidae Dana, 1852
- Family Aethridae Dana, 1851
- Family Agostocarididae C.W.J. Hart & Manning, 1986
- Family Albuneidae Stimpson, 1858
- Family Alpheidae Rafinesque, 1815
- Family Alvinocarididae Christoffersen, 1986
- Family Amazighopsidae Garassino & Pasini, 2018 †
- Family Anacalliacidae Manning & Felder, 1991
- Family Anchialocarididae Mejía-Ortíz, Yañez & López-Mejía, 2017
- Family Anchistioididae Borradaile, 1915
- Family Annuntidiogenidae Fraaije, 2014 †
- Family Anomura (awaiting allocation)
- Family Antrocarcinidae Ng & Chia, 1994
- Family Aphanodactylidae Ahyong & Ng, 2009
- Family Arabicarcinidae Schweitzer & Feldmann, 2017 †
- Family Archaeochiapasidae Guinot, Carbot-Chanona & Vega, 2019 †
- Family Archaeopidae Karasawa, Kishimoto, Ohara & Ando, 2019 †
- Family Archaeoportunidae Artal, Ossó & Domínguez, 2013 †
- Family Aristeidae Wood-Mason in Wood-Mason & Alcock, 1891
- Family Astacidae Latreille, 1802
- Family Astacura (awaiting allocation)
- Family Atelecyclidae Ortmann, 1893
- Family Atyidae De Haan, 1849
- Family Axianassidae Schmitt, 1924
- Family Axiidae Huxley, 1879
- Family Barbouriidae Christoffersen, 1987
- Family Basinotopidae Karasawa, Schweitzer & Feldmann, 2011 †
- Family Bathypalaemonellidae De Saint Laurent, 1985
- Family Belliidae Dana, 1852
- Family Benthesicymidae Wood-Mason in Wood-Mason & Alcock, 1891
- Family Blastidae Stebbing, 1902 accepted as Epialtidae MacLeay, 1838
- Family Blepharipodidae Boyko, 2002
- Family Brachyura (awaiting allocation)
- Family Brachyura incertae sedis
- Family Brankocleistostomidae Števčić, 2011
- Family Bresiliidae Calman, 1896
- Family Brusiniidae Števčić, 1991
- Family Bucculentidae †
- Family Bythograeidae Williams, 1980
- Family Calappidae De Haan, 1833
- Family Calappoidea (awaiting allocation)
- Family Callianassidae Dana, 1852
- Family Callianideidae Kossman, 1880
- Family Callianopsidae Manning & Felder, 1991
- Family Callichimaeridae Luque et al., 2019 †
- Family Callichiridae Manning & Felder, 1991
- Family Calocarididae Ortmann, 1891
- Family Camarocarcinidae †
- Family Cambaridae Hobbs, 1942
- Family Camptandriidae Stimpson, 1858
- Family Campylonotidae Sollaud, 1913
- Family Cancridae Latreille, 1802
- Family Cancrinidae Beurlen, 1930 †
- Family Carcineretidae Beurlen, 1930 †
- Family Carcinidae MacLeay, 1838
- Family Carcinoplacidae
- Family Caridea (awaiting allocation)
- Family Caridea incertae sedis
- Family Carinocarcinoididae Karasawa & Kato, 2003 †
- Family Carpiliidae Ortmann, 1893
- Family Carpopenaeidae †
- Family Catoptridae Borradaile, 1902
- Family Cenomanocarcinidae †
- Family Chasmocarcinidae Serène, 1964
- Family Cheiragonidae Ortmann, 1893
- Family Chilenophoberidae †
- Family Chimaerastacidae †
- Family Chirostylidae Ortmann, 1892
- Family Christmaplacidae Naruse & Ng, 2014
- Family Clytiopsidae Beurlen, 1927 †
- Family Coenobitidae Dana, 1851
- Family Coleiidae Van Straelen, 1924 †
- Family Componocancridae †
- Family Conleyidae Števčić, 2005
- Family Corystidae Samouelle, 1819
- Family Costacoplumidae St Laurent, 1989 †
- Family Crangonidae Haworth, 1825
- Family Cretapsaridae Luque, 2021 †
- Family Cricoidoscelosidae †
- Family Crossotonotidae Moosa & Serène, 1981
- Family Cryptochiridae Paul'son, 1875
- Family Ctenochelidae Manning & Felder, 1991
- Family Ctenocheloidae Sakai, 2011
- Family Cyclodorippidae Ortmann, 1892
- Family Cymonomidae Bouvier, 1898
- Family Dacryopilumnidae Serène, 1984
- Family Dairidae Ng & Rodríguez, 1986
- Family Dairoididae Števčić, 2005
- Family Dakoticancridae †
- Family Daldorfiidae Ng & Rodriguez, 1986 accepted as Parthenopidae MacLeay, 1838
- Family Decapoda (awaiting allocation)
- Family Decapoda incertae sedis
- Family Deckeniidae Ortmann, 1897
- Family Desmocarididae Borradaile, 1915
- Family Diaulacidae Wright & Collins, 1972 †
- Family Diogenidae Ortmann, 1892
- Family Disciadidae Rathbun, 1902
- Family Domeciidae Ortmann, 1893
- Family Dorippidae MacLeay, 1838
- Family Dotillidae Stimpson, 1858
- Family Dromiidae de Haan, 1833
- Family Dynomenidae Ortmann, 1892
- Family Eiconaxiidae Sakai & Ohta, 2005
- Family Eiconaxiopsididae Sakai, 2011
- Family Enoplometopidae Saint Laurent, 1988
- Family Eocarcinidae Withers, 1932 †
- Family Eocarididae Brooks, 1962 †
- Family Eogeryonidae Ossó, 2016 †
- Family Epialtidae MacLeay, 1838
- Family Eriphiidae MacLeay, 1838
- Family Erymidae †
- Family Eryonidae De Haan, 1841 †
- Family Ethusidae Guinot, 1977
- Family Etyidae Guinot & Tavares, 2001 †
- Family Etyiidae † accepted as Etyidae Guinot & Tavares, 2001 †
- Family Eucalliacidae Manning & Felder, 1991
- Family Eugonatonotidae Chace, 1937
- Family Eumedonidae accepted as Pilumnidae Samouelle, 1819
- Family Eumunididae A. Milne-Edwards & Bouvier, 1900
- Family Euryplacidae Stimpson, 1871
- Family Euryrhynchidae Holthuis, 1950
- Family Feldmanniidae Schweitzer, Feldmann, Franţescu & Klompmaker, 2012 †
- Family Folguerolesiidae Artal & Hyžný, 2016 †
- Family Galatheacarididae
- Family Galatheidae Samouelle, 1819
- Family Galatheoidea (awaiting allocation)
- Family Galenidae Alcock, 1898
- Family Garthiellidae Mendoza & Manuel-Santos, 2012
- Family Garthopilumnidae Števčić, 2011 accepted as Eriphiidae MacLeay, 1838
- Family Gastrodoridae †
- Family Gebiadae Haworth, 1825 accepted as Upogebiidae Borradaile, 1903
- Family Gecarcinidae MacLeay, 1838
- Family Gecarcinucidae Rathbun, 1904
- Family Geryonidae Colosi, 1923
- Family Glaessnericarididae Karasawa, Schweitzer & Feldmann, 2013 †
- Family Glaessneropsidae Patrulius, 1959 †
- Family Glypheidae Winkler, 1882
- Family Glyphocrangonidae Smith, 1884
- Family Glyptograpsidae Schubart, Cuesta & Felder, 2002
- Family Gnathophyllidae Dana, 1852
- Family Goneplacidae MacLeay, 1838
- Family Goneplacoidea incertae sedis
- Family Goniodromitidae †
- Family Gourettiidae accepted as Gourretiidae Sakai, 1999
- Family Gourretiidae Sakai, 1999 accepted as Ctenochelidae Manning & Felder, 1991
- Family Grapsidae MacLeay, 1838
- Family Grapsoidea (awaiting allocation)
- Family Hapalocarcinidae accepted as Cryptochiridae Paul'son, 1875
- Family Hapalogastridae Brandt, 1850
- Family Hectarthropidae accepted as Processidae Ortmann, 1896
- Family Heloeciidae H. Milne Edwards, 1852
- Family Hepatidae Stimpson, 1871
- Family Hexapodidae Miers, 1886
- Family Hippidae Latreille, 1825
- Family Hippolytidae Spence Bate, 1888
- Family Homolidae de Haan, 1833
- Family Homolodromiidae Alcock, 1899
- Family Homolodromioidea (awaiting allocation)
- Family Hymenoceridae Ortmann, 1890
- Family Hymenosomatidae MacLeay, 1838
- Family Hypothalassiidae Karasawa & Schweitzer, 2006
- Family Ibericancridae Artal, Guinot, van Bakel & Castillo, 2008 †
- Family Icriocarcinidae Števčić, 2005 † accepted as Lithophylacidae Van Straelen, 1936 †
- Family Inachidae MacLeay, 1838
- Family Inachoididae Dana, 1851
- Family Iphiculidae Alcock, 1896
- Family Isolapotamidae
- Family Juglocarcinidae Garvie, Collins & Mellish, 2017 † accepted as Orithopsidae Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003 †
- Family Jurellanidae Klompmaker & Robins, 2019 †
- Family Kakaducarididae Bruce, 1993
- Family Kiwaidae Macpherson, Jones & Segonzac, 2005
- Family Konidromitidae †
- Family Kuwaitupogebiidae Sakai, Türkay & Al Aidaroos, 2015
- Family Laomediidae Borradaile, 1903
- Family Latreilliidae Stimpson, 1858
- Family Lazarocleistostomidae Števčić, 2011
- Family Lecythocaridae †
- Family Leptograpsodidae Guinot, Ng & Rodríguez Moreno, 2018
- Family Leucosiidae Samouelle, 1819
- Family Linnaeoxanthidae Števčić, 2005
- Family Lipkiidae Burukovsky, 2012
- Family Lithodidae Samouelle, 1819
- Family Lithophylacidae Van Straelen, 1936 †
- Family Litocheiridae Števčić, 2005
- Family Litogastridae Karasawa, Schweitzer & Feldmann, 2013 †
- Family Litogastroidae Karasawa, Schweitzer & Feldmann, 2013 † accepted as Litogastridae Karasawa, Schweitzer & Feldmann, 2013 †
- Family Lomidae Glassner, 1969 accepted as Lomisidae Bouvier, 1895
- Family Lomisidae Bouvier, 1895
- Family Lomisinés Bouvier, 1894 accepted as Lomisidae Bouvier, 1895
- Family Longodromitidae Schweitzer & Feldmann, 2009 †
- Family Longusorbiidae †
- Family Luciferidae De Haan, 1849 [in De Haan, 1833-1850]
- Family Lyreididae Guinot, 1993
- Family Lysmatidae Dana, 1852
- Family Macromaxillocarididae Alvarez, Iliffe & Villalobos, 2006
- Family Macrophthalmidae Dana, 1851
- Family Macropipidae Stephenson & Campbell, 1960
- Family Magyarcarcinidae Domínguez & Ossó, 2016 †
- Family Majidae Samouelle, 1819
- Family Mamaiidae accepted as Majidae Samouelle, 1819
- Family Marocarcinidae †
- Family Martinocarcinidae †
- Family Mathildellidae Karasawa & Kato, 2003
- Family Matutidae de Haan, 1835
- Family Mecochiridae Van Straelen, 1925 †
- Family Menippidae Ortmann, 1893
- Family Micheleidae Sakai, 1992
- Family Mictyridae Dana, 1851
- Family Mimilambridae accepted as Parthenopidae MacLeay, 1838
- Family Mirocarididae
- Family Mithracidae MacLeay, 1838
- Family Mithracitidae Števčić, 2005 †
- Family Montemagrechiridae Klompmaker, Portell & van der Meij, 2016 †
- Family Montezumellidae Ossó & Domínguez, 2013 †
- Family Munididae Ahyong, Baba, MacPherson & Poore, 2010
- Family Munidopsidae Ortmann, 1898
- Family Nanocassiopidae Števčić, 2013
- Family Necrocarcinidae Förster, 1968 †
- Family Nematocarcinidae Smith, 1884
- Family Neoaxiidae Sakai, 2017 accepted as Axiidae Huxley, 1879
- Family Neoglypheidae Karasawa, Schweitzer & Feldmann, 2013
- Family Nephropidae Dana, 1852
- Family Nodoprosopidae †
- Family Ocypodidae Rafinesque, 1815
- Family Ogyrididae Holthuis, 1955
- Family Oplophoridae Dana, 1852
- Family Oregoniidae Garth, 1958
- Family Orithopsidae Schweitzer, Feldmann, Fam, Hessin, Hetrick, Nyborg & Ross, 2003 †
- Family Orithyiidae Dana, 1852
- Family Ovalipidae Spiridonov, Neretina & Schepetov, 2014
- Family Oziidae Dana, 1851
- Family Paguridae Latreille, 1802
- Family Paguroidea incertae sedis †
- Family Palaemonidae Rafinesque, 1815
- Genus Alaocaris Holthuis, 1949 accepted as Palaemonetes Heller, 1869
- Genus Alburnia Bravi & Garassino, 1998 †
- Genus Alciope Rafinesque, 1814 accepted as Pontonia Latreille, 1829
- Genus Allobrachium Jayachandran, 2001 accepted as Macrobrachium Spence Bate, 1868
- Genus Allocaris Sollaud, 1911 accepted as Palaemonetes Heller, 1869
- Genus Allopontia accepted as Allopontonia Bruce, 1972
- Genus Allopontonia Bruce, 1972
- Genus Altopontonia Bruce, 1990
- Genus Amphipalaemon Balss, 1921 accepted as Balssia Kemp, 1922
- Genus Amphipontonia Bruce, 1991
- Genus Anapontonia Bruce, 1966
- Genus Anchiopontonia Bruce, 1992
- Genus Anchista accepted as Anchistia Dana, 1852
- Genus Anchistia Dana, 1852 accepted as Periclimenes O.G. Costa, 1844
- Genus Anchistus Borradaile, 1898
- Genus Ancylocaris Schenkel, 1902 accepted as Periclimenes O.G. Costa, 1844
- Genus Ancylomenes Okuno & Bruce, 2010
- Genus Anisomenaeus Bruce, 2010
- Genus Apopontonia Bruce, 1976
- Genus Arachnochium Wowor & Ng, 2010
- Genus Araiopontonia Fujino & Miyake, 1970
- Genus Ascidonia Fransen, 2002
- Genus Bahiacaris Schweitzer, Santana, Pinheiro & Feldmann, 2019 † accepted as Bahiacaris Schweitzer, Santana, Pinheiro & Feldmann, 2023 †
- Genus Bahiacaris Schweitzer, Santana, Pinheiro & Feldmann, 2023 †
- Genus Balssia Kemp, 1922
- Genus Bavaricaris Winkler, 2021 †
- Genus Bechleja Houša, 1957 †
- Genus Beurlenia Martins-Neto & Mezzalira, 1991 †
- Genus Bithynis Philippi, 1860 accepted as Cryphiops Dana, 1852
- Genus Bithynops Holthuis, 1973 accepted as Cryphiops Dana, 1852
- Genus Blepharocaris Mitsuhashi & Chan, 2007
- Genus Brachycarpus Spence Bate, 1888
- Genus Brucecaris Marin & Chan, 2006
- Genus Bruceonia Fransen, 2002
- Genus Cainonia Bruce, 2005
- Genus Calathaemon Bruce & Short, 1993
- Genus Calmania Nobili, 1907 accepted as Brachycarpus Spence Bate, 1888
- Genus Carinopontonia Bruce, 1988
- Genus Cavicheles Holthuis, 1952 accepted as Jocaste Holthuis, 1952
- Genus Chacella Bruce, 1986
- Genus Chernocaris Johnson, 1967 accepted as Conchodytes Peters, 1852
- Genus Climeniperaeus Bruce, 1995
- Genus Colemonia Bruce, 2005
- Genus Conchodytes Peters, 1852
- Genus Coralliocaris Stimpson, 1860
- Genus Corniger Borradaile, 1915 accepted as Laomenes Clark, 1919
- Genus Coutierea Nobili, 1901
- Genus Coutierella Sollaud, 1914
- Genus Creaseria Holthuis, 1950
- Genus Crinotonia Marin, 2006
- Genus Cristiger Borradaile, 1915 accepted as Periclimenes O.G. Costa, 1844
- Genus Cryphiops Dana, 1852
- Genus Cryptoleander Gurney & Lebour, 1941 accepted as Leander Desmarest, 1849
- Genus Ctenopontonia Bruce, 1979
- Genus Cuapetes Clark, 1919
- Genus Dactylonia Fransen, 2002
- Genus Dasella Lebour, 1945
- Genus Dasia Lebour, 1938 accepted as Dasella Lebour, 1945
- Genus Dasycaris Kemp, 1922
- Genus Dasygius accepted as Dasycaris Kemp, 1922
- Genus Dennisia Norman, 1861 accepted as Periclimenes O.G. Costa, 1844
- Genus Diapontonia Bruce, 1986
- Genus Echinopericlimenes Marin & Chan, 2014
- Genus Ensiger Borradaile, 1915 accepted as Anchistus Borradaile, 1898
- Genus Epipontonia Bruce, 1977
- Genus Eupalaemon Ortmann, 1891 accepted as Macrobrachium Spence Bate, 1868
- Genus Eupontonia Bruce, 1971 accepted as Palaemonella Dana, 1852
- Genus Exoclimenella Bruce, 1995
- Genus Exoclimenella Ďuriš & Bruce, 1995 accepted as Exoclimenella Bruce, 1995
- Genus Exopalaemon Holthuis, 1950
- Genus Exopontonia Bruce, 1988
- Genus Falciger Borradaile, 1915 accepted as Cuapetes Clark, 1919
- Genus Fennera Holthuis, 1951
- Genus Hamiger Borradaile, 1916
- Genus Hamodactyloides Fujino, 1973
- Genus Hamodactylus Holthuis, 1952
- Genus Hamopontonia Bruce, 1970
- Genus Harpiliopsis Borradaile, 1917
- Genus Harpilius Dana, 1852
- Genus Holthuisaeus Anker & De Grave, 2010
- Genus Ischnopontonia Bruce, 1966
- Genus Isopontonia Bruce, 1982
- Genus Izucaris Okuno, 1999
- Genus Jocaste Holthuis, 1952
- Genus Kakaducaris Bruce, 1993 accepted as Leptopalaemon Bruce & Short, 1993
- Genus Kaviengella Šobáňová & Ďuriš, 2018
- Genus Kellnerius Santana, Pinheiro, Da Silva & Saraiva, 2013 †
- Genus Kemponia Bruce, 2004 accepted as Cuapetes Clark, 1919
- Genus Lacertopontonia Marin, 2011 accepted as Conchodytes Peters, 1852
- Genus Laomenes Clark, 1919
- Genus Leadner
- Genus Leander Desmarest, 1849
- Genus Leandrites Holthuis, 1950
- Genus Leptocarpus Holthuis, 1950
- Genus Leptomenaeus Bruce, 2007
- Genus Leptomenes Bruce, 2006 accepted as Leptomenaeus Bruce, 2007
- Genus Leptopalaemon Bruce & Short, 1993
- Genus Lipkebe Chace, 1969
- Genus Lipkemenes Bruce & Okuno, 2010
- Genus Macrobrachium Spence Bate, 1868
- Genus Macroterocheir Stebbing, 1908 accepted as Macrobrachium Spence Bate, 1868
- Genus Madangella Frolová & Ďuriš, 2018
- Genus Manipontonia Bruce, Okuno & Li, 2005
- Genus Margitonia Bruce, 2007
- Genus Marygrande Pesta, 1911 accepted as Anchistus Borradaile, 1898
- Genus Mesocaris Ortmann, 1893
- Genus Mesopontonia Bruce, 1967
- Genus Mesopotonia Bruce, 1969
- Genus Metacrimenes Komai & Sakiyama, 2023
- Genus Metapontonia Bruce, 1967
- Genus Metapotonia Bruce, 1967 accepted as Metapontonia Bruce, 1967
- Genus Michaelimenes Okuno, 2017
- Genus Micropsalis von Meyer, 1859 †
- Genus Miopontonia Bruce, 1985
- Genus Miopotonia
- Genus Nematopalaemon Holthuis, 1950
- Genus Neoanchistus Bruce, 1975
- Genus Neoclimenes Mitsuhashi, Li & Chan, 2010
- Genus Neopalaemon H.H. Jr. Hobbs, 1973
- Genus Neopericlimenes Heard, Spotte & Bubucis, 1993
- Genus Neopontonides Holthuis, 1951
- Genus Ngankeecaris Okuno & Yoshida, 2024
- Genus Nippontonia Bruce & Bauer, 1997
- Genus Notopontonia Bruce, 1991
- Genus Odontocerus Leach, 1830 accepted as Odontorynchus Leach, 1830
- Genus Odontonia Fransen, 2002
- Genus Odontorynchus Leach, 1830
- Genus Oedipus Dana, 1852 accepted as Coralliocaris Stimpson, 1860
- Species Oedipus dentirostris Paul'son, 1875 accepted as Coralliocaris superba (Dana, 1852)
- Species Oedipus graminea Dana, 1852
- Species Oedipus gramineus Dana, 1852 accepted as Coralliocaris graminea (Dana, 1852)
- Species Oedipus nudirostris Heller, 1861 accepted as Coralliocaris nudirostris (Heller, 1861)
- Species Oedipus nudirostris Heller, 1862 accepted as Coralliocaris nudirostris (Heller, 1861)
- Species Oedipus superbus Dana, 1852
- Genus Onycocaridella Bruce, 1981
- Genus Onycocaridites Bruce, 1987
- Genus Onycocaris Nobili, 1904
- Genus Onycomenes Bruce, 2009
- Genus Opaepupu Anker & De Grave, 2021
- Genus Orthopontonia Bruce, 1982
- Genus Palaeander Holthuis, 1950 accepted as Palaemon Weber, 1795
- Genus Palaemon Weber, 1795
- Genus Palaemon Fabricius, 1798 accepted as Palaemon Weber, 1795
- Genus Palaemonella Dana, 1852
- Genus Palaemonetes Heller, 1869
- Genus Palaemonopsis Stimpson, 1871 accepted as Palaemonetes Heller, 1869
- Genus Palaeomonopsis
- Genus Paleander Holthuis, 1950
- Genus Palemon Duméril, 1805 accepted as Palaemon Weber, 1795
- Genus Paloemon Weber, 1795 accepted as Palaemon Weber, 1795
- Genus Paraclimenaeus Bruce, 1988
- Genus Paraclimenes Bruce, 1995
- Genus Paranchistus Holthuis, 1952
- Genus Parapalaemon Ortmann, 1891 accepted as Macrobrachium Spence Bate, 1868
- Genus Parapalaemonetes Brandt & Schulz, 2013 †
- Genus Parapontonia Bruce, 1968 accepted as Laomenes Clark, 1919
- Genus Paratypton Balss, 1914
- Genus Patonia Mitsuhashi & Chan, 2006
- Genus Pelias Roux, 1831 accepted as Periclimenes O.G. Costa, 1844
- Genus Periclimenaeus Borradaile, 1915
- Genus Periclimenella Bruce, 1995
- Genus Periclimenella Ďuriš & Bruce, 1995 accepted as Periclimenella Bruce, 1995
- Genus Periclimenes O.G. Costa, 1844
- Genus Periclimenoides Bruce, 1990
- Genus Pericliminoides
- Genus Philarius Holthuis, 1952
- Genus Phycomenes Bruce, 2008
- Genus Pinnotheronia Marin & Paulay, 2010
- Genus Pinnotherotonia Marin & Paulay, 2010
- Genus Platycaris Holthuis, 1952
- Genus Platypontonia Bruce, 1968
- Genus Plesiomenaeus Bruce, 2009
- Genus Plesiopontonia Bruce, 1985
- Genus Pliopontonia Bruce, 1973
- Genus Pontonella Heller, 1856 accepted as Typton O.G. Costa, 1844
- Genus Pontonia Berthold, 1827 accepted as Pontonia Latreille, 1829
- Genus Pontonia Latreille, 1829
- Genus Pontonides Borradaile, 1917
- Genus Pontoniopsides Bruce, 2005
- Genus Pontoniopsis Borradaile, 1915
- Genus Poripontonia Fransen, 2003
- Genus Propalaemon Woodward, 1903 †
- Genus Propontonia Bruce, 1969
- Genus Pseudocaridinella Martins-Neto & Mezzalira, 1991 †
- Genus Pseudoclimenes Bruce, 2008
- Genus Pseudocoutierea Holthuis, 1951
- Genus Pseudocoutièrea Holthuis, 1951 accepted as Pseudocoutierea Holthuis, 1951
- Genus Pseudopalaemon Sollaud, 1911
- Genus Pseudopontonia Bruce, 1992
- Genus Pseudopontonides Heard, 1986
- Genus Pseudorpontonides
- Genus Pseudoveleronia Marin, 2008
- Genus Rapipontonia Marin, 2007
- Genus Retrocaris Ortmann, 1893 accepted as Brachycarpus Spence Bate, 1888
- Genus Rhopalaemon Ashelby & De Grave, 2010
- Genus Rostronia Fransen, 2002
- Genus Sandimenes Li, 2009
- Genus Sandyella Marin, 2009
- Genus Schmelingia Schweigert, 2002 †
- Genus Stegopontonia Nobili, 1906
- Genus Stigopontonia Nobili, 1906 accepted as Stegopontonia Nobili, 1906
- Genus Tectopontonia Bruce, 1973
- Genus Tenuipedium Wowor & Ng, 2010
- Genus Thaumastocaris Kemp, 1922
- Genus Tridacnocaris Nobili, 1899 accepted as Anchistus Borradaile, 1898
- Genus Troglindicus Sankolli & Shenoy, 1979
- Genus Troglocubanus Holthuis, 1949
- Genus Troglomexicanus Villalobos, Alvarez & Iliffe, 1999
- Genus Tuleariocaris Hipeau-Jacquotte, 1965
- Genus Typton O.G. Costa, 1844
- Genus Typtonoides Bruce, 2010
- Genus Typtonomenaeus Marin & Chan, 2013
- Genus Typtonychus Bruce, 1996
- Genus Unesconia Anker, 2020
- Genus Unguicaris Marin & Chan, 2006
- Genus Urocaridella Borradaile, 1915
- Genus Urocaris Stimpson, 1860
- Genus Veleronia Holthuis, 1951
- Genus Veleroniopsis Gore, 1981
- Genus Vir Holthuis, 1952 accepted as Palaemonella Dana, 1852
- Genus Waldola Holthuis, 1951
- Genus Yemenicaris Bruce, 1997
- Genus Yongjiacaris Garassino, Shen, Schram & Taylor, 2002 †
- Genus Yongjicaris Garassino, Shen, Schram & Taylor, 2002 † accepted as Yongjiacaris Garassino, Shen, Schram & Taylor, 2002 †
- Genus Zenopontonia Bruce, 1975
- Genus Zoukaris Anker & Corbari, 2020
- Family Palaeocorystidae Lőrenthey in Lőrenthey & Beurlen, 1929 †
- Family Palaeopalaemonidae Rafinesque, 1815 †
- Family Palaeopentachelidae †
- Family Paleoxanthopsidae †
- Family Palicidae Bouvier, 1898
- Family Palinura (awaiting allocation)
- Family Palinuridae Latreille, 1802
- Family Pandalidae Haworth, 1825
- Family Panopeidae Ortmann, 1893
- Family Paracalliacidae Sakai, 2005
- Family Parapaguridae Smith, 1882
- Family Parapinnixidae Števčić, 2005
- Family Parapylochelidae Fraaije, Klompmaker & Artal, 2012 †
- Family Parastacidae
- Family Parathelphusidae Alcock, 1910
- Family Parthenopidae MacLeay, 1838
- Family Pasiphaeidae Dana, 1852
- Family Pemphicidae †
- Family Penaeidae Rafinesque, 1815
- Family Penaeoidea incertae sedis
- Family Percnidae Števčić, 2005
- Family Phyllotymolinidae Tavares, 1998
- Family Physetocarididae Chace, 1940
- Family Pilumnidae Samouelle, 1819
- Family Pilumnoididae Guinot & MacPherson, 1987
- Family Pinnotheridae de Haan, 1833
- Family Pirimelidae Alcock, 1899
- Family Pisidae Dana, 1851 accepted as Majidae Samouelle, 1819
- Family Plagusiidae Dana, 1851
- Family Planopilumnidae Serène, 1984
- Family Plantergidae accepted as Majidae Samouelle, 1819
- Family Platychelidae Glaessner, 1969 †
- Family Platykottidae Chablais, Feldmann & Schweitzer, 2011 †
- Family Platythelphusidae
- Family Platyxanthidae Guinot, 1977
- Family Pleocyemata incertae sedis
- Family Pleopteryxidae †
- Family Polybiidae Ortmann, 1893
- Family Polychelida incertae sedis †
- Family Polychelidae Wood-Mason, 1875
- Family Pomatochelidae accepted as Pylochelidae Bate, 1888
- Family Porcellanidae Haworth, 1825
- Family Portunidae Rafinesque, 1819
- Family Portunoidea incertae sedis
- Family Potamidae Ortmann, 1896
- Family Potamocarcinidae
- Family Potamonautidae Bott, 1970
- Family Potamonidae Ortmann, 1893 accepted as Pseudothelphusidae Ortmann, 1893
- Family Poupiniidae Guinot, 1991
- Family Priscinachidae Breton, 2009 †
- Family Pristinaspinidae Ahyong & Roterman, 2014 †
- Family Procarididae Chace & Manning, 1972
- Family Procaridoidea (awaiting allocation)
- Family Processidae Ortmann, 1896
- Family Progeryonidae Števčić, 2005
- Family Prosopidae von Meyer, 1860 †
- Family Protastacidae †
- Family Psalidopodidae Wood-Mason in Wood-Mason & Alcock, 1892
- Family Psammocarcinidae †
- Family Pseudochelidae De Grave & Moosa, 2004
- Family Pseudorhombilidae Alcock, 1900 accepted as Panopeidae Ortmann, 1893
- Family Pseudothelphusidae Ortmann, 1893
- Family Pseudoziidae Alcock, 1898
- Family Pylochelidae Bate, 1888
- Family Pylojacquesidae McLaughlin & Lemaitre, 2001
- Family Quadratoplanidae Franţescu, 2014 †
- Family Raninidae de Haan, 1833
- Family Raninoida incertae sedis †
- Family Retroplumidae Gill, 1894
- Family Retrorsichelidae †
- Family Rhynchocinetidae Ortmann, 1890
- Family Scalopidiidae Števčić, 2005
- Family Schobertellidae Schweigert, Fraaije, Havlik & Nützel, 2013 †
- Family Scyllaridae Latreille, 1825
- Family Sergestidae Dana, 1852
- Family Sergestoidea incertae sedis
- Family Sesarmidae Dana, 1851
- Family Sicyoniidae Ortmann, 1898
- Family Sinopotamidae
- Family Solenoceridae Wood-Mason in Wood-Mason & Alcock, 1891
- Family Sotoplacidae Castro, Guinot & Ng, 2010
- Family Speocarcinidae accepted as Xanthidae MacLeay, 1838
- Family Sphaerodromiidae Guinot & Tavares, 2003 †
- Family Spongicolidae Schram, 1986
- Family Stenochiridae †
- Family Stenopidae accepted as Stenopodidae Claus, 1872
- Family Stenopodidae Claus, 1872
- Family Sternostylidae Baba, Ahyong & Schnabel, 2018
- Family Strahlaxiidae Poore, 1994
- Family Stylodactylidae Spence Bate, 1888
- Family Sundathelphusidae accepted as Parathelphusidae Alcock, 1910
- Family Symethidae Goeke, 1981 accepted as Raninidae de Haan, 1833
- Family Synaxidae Bate, 1881 accepted as Palinuridae Latreille, 1802
- Family Tanaocheleidae
- Family Tanaochelidae Ng & Clark, 2000
- Family Tanidromitidae †
- Family Telamonocarcinidae Larghi, 2004 †
- Family Tepexicarcinidae Luque, 2015 †
- Family Tetrachelidae BemIen, 1930 †
- Family Tetraliidae Castro, Ng & Ahyong, 2004
- Family Tetriasidae Tsang & Naruse, 2023
- Family Thalassinidae Latreille, 1831
- Family Thalassinidea incertae sedis
- Family Thalassocarididae Spence Bate, 1888
- Family Thaumastochelidae
- Family Thelxiopeidae accepted as Homolidae de Haan, 1833
- Family Thiidae Dana, 1852
- Family Thomassiniidae de Saint Laurent, 1979
- Family Tithonohomolidae †
- Family Torynommatidae †
- Family Tosacallianassidae Sakai, 2016
- Family Trapeziidae Miers, 1886
- Family Tricarinidae Feldmann et al., 2007 †
- Family Trichodactylidae H. Milne Edwards, 1853
- Family Trichopeltariidae Tavares & Cleva, 2010
- Family Trogloplacidae
- Family Tumidocarcinidae Schweitzer, 2005 †
- Family Tychidae Dana, 1851 accepted as Epialtidae MacLeay, 1838
- Family Tymolidae accepted as Cyclodorippidae Ortmann, 1892
- Family Typhlocarididae Annandale & Kemp, 1913
- Family Ucididae Števčic, 2005
- Family Udorellidae Van Straelen, 1924 †
- Family Uncinidae Beurlen, 1928 †
- Family Upogebiidae Borradaile, 1903
- Family Varunidae H. Milne Edwards, 1853
- Family Venipaguridae Collins, 2011 †
- Family Viaiidae Artal, Van Bakel, Fraaije, Jagt & Klompmaker, 2012 †
- Family Vultocinidae Ng & Manuel-Santos, 2007
- Family Xandarocarcinidae Karasawa, Schweitzer & Feldmann, 2011 †
- Family Xanthidae MacLeay, 1838
- Family Xanthoidea (awaiting allocation)
- Family Xanthoidea incertae sedis
- Family Xenograpsidae N. K. NG, DAVIE, SCHUBART & NG, 2007
- Family Xenophthalmidae Stimpson, 1858
- Family Xiphocarididae Ortmann, 1895
- Family Zanthopsidae Via, 1959 †
- Order Eocaridacea †
- Order Eumalacostraca (awaiting allocation)
- Order Euphausiacea
- Order Hoplostraca
- Order Hymenostraca †
- Order Isopoda
- Order Leptostraca
- Order Lophogastrida
- Order Malacostraca (awaiting allocation)
- Order Mictacea
- Order Mysida
- Order Palaeocaridacea †
- Order Palaeostomatopoda †
- Order Phyllocarida (awaiting allocation)
- Order Phyllocarida incertae sedis †
- Order Pygocephalomorpha †
- Order Spelaeogriphacea
- Order Stomatopoda
- Order Syncarida incertae sedis †
- Order Tanaidacea
- Order Thermosbaenacea
- Order Waterstonellidea
- Family Essoidiidae Schram, 1974 †
- Genus Hohensteiniella Haug, Poschmann, Hörnig & Lutz, 2016 †
- Genus Mesoprosopon Stolley, 1914 †
- Class Maxillopoda
- Class Ostracoda
- Class Remipedia
- Order Cyclida †
- Genus Anatifera Meuschen, 1787
- Genus Dickinsonia Tasch, 1963 † accepted as Elmocephalus Tasch, 1964 †
- Genus Elmocephalus Tasch, 1964 †
- Subphylum Hexapoda
- Subphylum Myriapoda
- Subphylum Trilobitomorpha †
- Class Arachnomorpha (awaiting allocation)
- Class Arthropoda (awaiting allocation)
- Class Artiopoda †
- Class Crustaceomorpha incertae sedis †
- Class Dinocaridida †
- Class Labrophora incertae sedis
- Class Lamellipedia incertae sedis
- Class Megacheira †
- Class Thylacocephala †
- Class Xenocarida incertae sedis
- Order Canadaspidida † accepted as Hymenocarina †
- Order Cheloniellida †
- Order Emeraldellida † accepted as Arthropoda
- Order Fuxianhuiida †
- Order Habeliida †
- Order Hymenocarina †
- Order Isoxyida †
- Order Pectocaridida † accepted as Hymenocarina †
- Order Waptiida † accepted as Hymenocarina †
- Family Bomakellidae Fedonkin, 1987 †
- Family Burgessiidae Walcott, 1912 †
- Family Emeraldellidae Raymond, 1935 †
- Family Guangweicarididae Luo, Fu, Hu, Li, Hou, You, Pang & Liu, 2007 †
- Genus Aaveqaspis Peel & Stein, 2009 †
- Genus Acheronauta Pulsipher, Anderson, Wright, Kluessendorf, Mikulic & Schiffbauer, 2022 †
- Genus Arthroaspis Stein, Budd, Peel & Harper, 2013 †
- Genus Astutuscaris Jiao & Du, 2022 †
- Genus Bennettarthra Fayers, Trewin & Morrissey, 2010 †
- Genus Bushizheia O'Flynn & Liu in O'Flynn et al., 2020 †
- Genus Chuandianella Hou & Bergström, 1991 †
- Genus Dioxycaris Gürich, 1929 †
- Genus Dongshanocaris Hou, Bergström, Wang, Feng & Chen, 1999 †
- Genus Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Duraznovs Lara, Cariglino & Zavattieri in Lara et al., 2019 † accepted as Duraznovis Lara, Cariglino & Zavattieri in Lara et al., 2019 †
- Genus Esmeraldacaris Waggoner, 2003 †
- Genus Fibulacaris Izquierdo-López & Caron, 2019 †
- Genus Kiisortoqia Stein, 2010 †
- Genus Kylinxia Zeng, Zhao, Niu, Zhu & Huang, 2020 †
- Genus Lihuacaris Jiao, Pates, Lerosey-Aubril, Ortega-Hernández, Yang, Lan & Zhang, 2021 †
- Genus Norikeya Tanaka, Siveter & Williams, 2013 †
- Genus Nothozoe Barrande, 1872 †
- Genus Nothozoe Barrande in Bigsby, 1868 † accepted as Nothozoe Barrande, 1872 †
- Genus Notozoe Zittel, 1885 † accepted as Nothozoe Barrande, 1872 †
- Genus Pakucaris Izquierdo-López & Caron, 2021 †
- Genus Pambdelurion Budd, 1998 †
- Genus Parvibellus Liu, Dunlop, Steiner & Shu, 2022 †
- Genus Pleuralata McCoy, Strother & Briggs, 2012 †
- Genus Pseudoangustidontus Van Roy & Tetlie, 2006 †
- Genus Pteroessa Hudson & Gosse, 1886
- Genus Sidneyia Walcott, 1911 †
- Genus Siriocaris Lagebro, Stein & Peel, 2009 †
- Genus Vermontcaris Pari, Briggs & Gaines, 2022 †
- Genus Youti Smith, Long, Dhungana, Dobson, Yang & Zhang, 2024 †
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Phylum Cnidaria
- Phylum Ctenophora
- Phylum Cycliophora
- Phylum Cycloneuralia incertae sedis
- Phylum Ecdysozoa incertae sedis †
- Phylum Echinodermata
- Phylum Entoprocta
- Phylum Gastrotricha
- Phylum Gnathostomulida
- Phylum Hemichordata
- Phylum Hyolitha †
- Phylum Kinorhyncha
- Phylum Lobopoda †
- Phylum Loricifera
- Phylum Micrognathozoa
- Phylum Mollusca
- Phylum Monoblastozoa accepted as Animalia incertae sedis
- Phylum Nematoda
- Phylum Nematomorpha
- Phylum Nemertea
- Phylum Onychophora
- Phylum Orthonectida
- Phylum Phoronida
- Phylum Placozoa
- Phylum Platyhelminthes
- Phylum Pogonophora accepted as Siboglinidae Caullery, 1914
- Phylum Porifera
- Phylum Priapula accepted as Priapulida
- Phylum Priapulida
- Phylum Problematica † accepted as Animalia incertae sedis
- Phylum Rhombozoa
- Phylum Rotifera
- Phylum Scalidophora incertae sedis
- Phylum Sipuncula
- Phylum Tardigrada
- Phylum Trace fossils †
- Phylum Vendobionta †
- Phylum Vestimentifera accepted as Siboglinidae Caullery, 1914
- Phylum Vetulicolia †
- Phylum Vinctiplicata incertae sedis †
- Phylum Xenacoelomorpha
- Genus Trilobocaris Pribyl, 1953 †
- Kingdom Archaea
- Kingdom Bacteria
- Kingdom Chromista
- Kingdom Fungi
- Kingdom Plantae
- Kingdom Protista accepted as Protozoa
- Kingdom Protozoa
- Kingdom Viruses
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