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
- Class Maxillopoda
- Subclass Facetotecta
- Subclass Pentastomida
- Subclass Tantulocarida
- Superorder Thoracica
- Order Akentrogonida
- Order Apoda accepted as Isopoda
- Order Apygophora
- Order Arguloida
- Order Calanoida
- Order Canuelloida
- Order Cirripedia (awaiting allocation)
- Order Cirripedia incertae sedis
- Order Copepoda (awaiting allocation)
- Order Cyclopoida
- Order Darwinida accepted as Isopoda
- Order Dendrogastrida
- Order Gelyelloida
- Order Harpacticoida
- Family Adenopleurellidae Huys, 1990
- Family Aegisthidae Giesbrecht, 1893
- Family Ambunguipedidae Huys, 1990 accepted as Hamondiidae Huys, 1990
- Family Ameiridae Monard, 1927
- Family Ancorabolidae G.O. Sars, 1909
- Family Arenopontiidae Martínez Arbizu & Moura, 1994
- Family Argestidae Por, 1986
- Family Balaenophilidae G.O. Sars, 1910
- Family Cancrincolidae Fiers, 1990
- Family Canthocamptidae Brady, 1880
- Family Cerviniidae Sars, 1903 accepted as Aegisthidae Giesbrecht, 1893
- Family Chappuisiidae Chappuis, 1940
- Family Cletodidae T. Scott, 1904
- Family Cletopsyllidae Huys & Willems, 1989
- Family Clytemnestridae A. Scott, 1909
- Family Cristacoxidae Huys, 1990
- Family Cylindropsyllidae G.O. Sars, 1909
- Family Dactylopusiidae G.O. Sars, 1905
- Family Danielsseniidae accepted as Pseudotachidiidae Lang, 1936
- Family Darcythompsoniidae Lang, 1936
- Family Diosaccidae G. O. Sars, 1906 accepted as Miraciidae Dana, 1846
- Family Ectinosomatidae G.O. Sars, 1903
- Family Ectinosomidae G.O. Sars, 1903 accepted as Ectinosomatidae G.O. Sars, 1903
- Family Euterpinidae Brian, 1921
- Family Hamondiidae Huys, 1990
- Family Harpacticidae Dana, 1846
- Family Harpacticoida (awaiting allocation)
- Family Harpacticoida incertae sedis
- Family Heteropsyllidae Kornev & Chertoprud, 2008
- Family Huntemanniidae Por, 1986 accepted as Nannopodidae Brady, 1880
- Family Idyaeidae Sars, 1910 accepted as Tisbidae Stebbing, 1910
- Family Idyanthidae Lang, 1948
- Family Ismardiidae Leigh-Sharpe, 1936 accepted as Harpacticidae Dana, 1846
- Family Laophontidae Scott, 1905
- Genus Aequinoctiella Cottarelli, Bruno & Berera, 2008
- Genus Afrolaophonte Chappuis, 1960
- Genus Amerolaophontina Fiers, 1991
- Genus Apistophonte Gheerardyn & Fiers in Gheerardyn, Fiers, Vincx & De Troch, 2006
- Genus Apolaophonte Wells & Rao, 1987 accepted as Lipomelum Fiers, 1986
- Genus Applanola Huys & Lee, 2000
- Genus Apsteinia Schmeil, 1894 accepted as Mesochra Boeck, 1865
- Genus Archesola Huys & Lee, 2000
- Genus Archilaophonte Willen, 1995
- Genus Arenolaophonte Lang, 1965
- Genus Asellopsis Brady & Robertson, 1873
- Genus Bathyesola Huys & Lee, 2000
- Genus Bathylaophonte Lee & Huys, 1999
- Genus Carcinocaris Cottarelli, Bruno & Berera, 2006
- Genus Carraroenia McCormack, 2006
- Genus Chilaophonte Mielke, 1985 accepted as Chilaophonte Huys, 2009
- Genus Chilaophonte Huys, 2009
- Genus Cletopyllus
- Genus Corbulaseta Huys & Lee, 2000
- Genus Cornylaophonte Willen, 1996
- Genus Coullia Hamond, 1973
- Genus Echinolaophonte Nicholls, 1941
- Genus Elapholaophonte Schizas & Shirley, 1994
- Genus Eolaophonte Apostolov, 1990 accepted as Coullia Hamond, 1973
- Genus Esola Edwards, 1891
- Genus Fiersiphontina Bruno & Cottarelli, 2011
- Genus Folioquinpes Fiers & Rutledge, 1990
- Genus Galapalaophonte Mielke, 1981
- Genus Harrietella Scott, 1906
- Genus Hemilaophonte Jakubisiak, 1932
- Genus Heterolaophonte Lang, 1948
- Genus Heterolaophonte Lang, 1944 accepted as Heterolaophonte Lang, 1948
- Genus Heteronychocamptus Lee & Huys, 1999
- Genus Hoplolaophonte Hamond, 1973
- Genus Indalophonte
- Genus Indolaophonte Cottarelli, Saporito & Puccetti, 1986
- Genus Inermiphonte Huys & Lee, 2009
- Genus Jejulaophonte Back & Lee, 2014
- Genus Klieonychocamptoides Noodt, 1958
- Genus Klieonychocamptus Noodt, 1958
- Genus Langia Wells & Rao, 1987 accepted as Raowellsia Özdikmen, 2008
- Genus Laophonte Philippi, 1840
- Species Laophonte abbreviata G.O. Sars, 1920 accepted as Pseudonychocamptus abbreviatus (G.O. Sars, 1920)
- Species Laophonte acutirostris Lang, 1965
- Species Laophonte adamsiae Raibaut, 1966
- Species Laophonte adduensis Sewell, 1940
- Species Laophonte adriatica Petkovski, 1955
- Species Laophonte affinis Boeck, 1872 accepted as Laophonte setosa Boeck, 1865
- Species Laophonte aldonae Chislenko, 1977
- Species Laophonte applanata G.O. Sars, 1909
- Species Laophonte arenicola Nicholls, 1941
- Species Laophonte armiger Gurney, 1927 accepted as Echinolaophonte armiger (Gurney, 1927)
- Species Laophonte arminger Guney, 1927 accepted as Onychocamptus armiger (Gurney, 1927)
- Species Laophonte australasica G.M. Thomson, 1882
- Species Laophonte australis T. Scott, 1912 accepted as Heterolaophonte australis (T. Scott, 1912)
- Species Laophonte bafanus Labbé, 1926 accepted as Heterolaophonte stroemii (Baird, 1834)
- Species Laophonte baltica Klie, 1929
- Species Laophonte barbata Lang, 1934
- Species Laophonte bengalensis Sewell, 1934 accepted as Onychocamptus bengalensis (Sewell, 1934)
- Species Laophonte borceai Jakubisiak, 1938
- Species Laophonte brevicornis T. Scott, 1894 accepted as Heterolaophonte brevicornis (T. Scott, 1894)
- Species Laophonte brevifurca G.O. Sars, 1920
- Species Laophonte brevirostris Klie, 1941
- Species Laophonte brevirostris (Claus, 1863) accepted as Paralaophonte brevirostris (Claus, 1863)
- Species Laophonte brevispinosa G.O. Sars, 1908 accepted as Echinolaophonte brevispinosa (G.O. Sars, 1908)
- Species Laophonte bulbifera Norman, 1911 accepted as Esola bulbifera (Norman, 1911)
- Species Laophonte bulligera Farran, 1913 accepted as Corbulaseta bulligera (Farran, 1913)
- Species Laophonte calamorum Willey, 1925 accepted as Onychocamptus mohammed (Blanchard & Richard, 1891)
- Species Laophonte campbelliensis Lang, 1934 accepted as Heterolaophonte campbelliensis (Lang, 1934)
- Species Laophonte capillata C.B. Wilson, 1932 accepted as Quinquelaophonte capillata (C.B. Wilson, 1932)
- Species Laophonte catharinensis Jakobi, 1953 accepted as Loureirophonte catharinensis Jakobi, 1953
- Species Laophonte cesareae Por, 1964
- Species Laophonte chathamensis G.O. Sars, 1904 accepted as Onychocamptus chathamensis (G.O. Sars, 1905)
- Species Laophonte ciliata Noodt, 1964
- Species Laophonte commensalis Raibaut, 1961
- Species Laophonte confusa Decho & Fleeger, 1986
- Species Laophonte congenera Noodt, 1908
- Species Laophonte congenera G.O. Sars, 1908 accepted as Paralaophonte congenera (G.O. Sars, 1908)
- Species Laophonte corbula Willey, 1935 accepted as Pseudocleta corbula (Willey, 1935)
- Species Laophonte cornuta Philippi, 1840
- Species Laophonte curticaudata Boeck, 1865 accepted as Paronychocamptus curticaudatus (Boeck, 1865)
- Species Laophonte curvata Douwe, 1929 accepted as Heterolaophonte curvata (Douwe, 1929)
- Species Laophonte danversae Hamond, 1969
- Species Laophonte denticornis T. Scott, 1894
- Species Laophonte depressa T. Scott, 1894
- Species Laophonte dieuzeidei Monard, 1936 accepted as Paralaophonte dieuzeidei (Monard, 1936)
- Species Laophonte dinocerata Monard, 1926
- Species Laophonte discophora Willey, 1929 accepted as Heterolaophonte discophora (Willey, 1929)
- Species Laophonte dominicalis Monard, 1935
- Species Laophonte drachi Médioni & Soyer, 1966
- Species Laophonte dubia Brady & D. Robertson, 1876 accepted as Normanella dubia (Brady & D. Robertson, 1880)
- Species Laophonte echinata Willey, 1930 accepted as Laophontodes armatus Lang, 1936
- Species Laophonte elongata Boeck, 1873
- Species Laophonte euxiniphila Soyer, 1977
- Species Laophonte exigua T. Scott, 1912 accepted as Heterolaophonte exigua (T. Scott, 1912)
- Species Laophonte expansa Fiers, 1986
- Species Laophonte faroensis T. Scott, 1903 accepted as Bathylaophonte faroensis (T. Scott, 1903)
- Species Laophonte farrani Roe, 1958
- Species Laophonte faxi
- Species Laophonte forcipata (Claus, 1866) accepted as Laophonte cornuta Philippi, 1840
- Species Laophonte foxi Harding, 1956
- Species Laophonte galapagoensis Mielke, 1981
- Species Laophonte glacialis Brady, 1910
- Species Laophonte gracilipes Brady, 1910 accepted as Paralaophonte gracilipes (Brady, 1910)
- Species Laophonte gracilis T. Scott, 1903 accepted as Pilifera gracilis (T. Scott, 1903)
- Species Laophonte gurneyi Lang, 1934 accepted as Paralaophonte gurneyi (Lang, 1934)
- Species Laophonte hamata Kornev & Chertoprud, 2008
- Species Laophonte hecate Brehm, 1909 accepted as Mesochra lilljeborgii Boeck, 1865
- Species Laophonte herdmani A. Scott, 1902 accepted as Paralaophonte brevirostris (Claus, 1863)
- Species Laophonte hirsuta Thompson & A. Scott, 1903 accepted as Esola hirsuta (I.C. Thompson & A. Scott, 1903)
- Species Laophonte hirsutus Pallares, 1979
- Species Laophonte hispida (Brady & D. Robertson, 1873) accepted as Asellopsis hispida Brady & D. Robertson, 1873
- Species Laophonte Hodgii Brady, 1872 accepted as Laophonte longicaudata Boeck, 1865
- Species Laophonte horrida Norman, 1876 accepted as Echinolaophonte horrida (Norman, 1876)
- Species Laophonte humilis Brian, 1929 accepted as Onychocamptus mohammed (Blanchard & Richard, 1891)
- Species Laophonte huntsmani Willey, 1923 accepted as Paronychocamptus huntsmani (Willey, 1923)
- Species Laophonte hyperborea G.O. Sars, 1909 accepted as Paralaophonte hyperborea (G.O. Sars, 1909)
- Species Laophonte hystrix Brian, 1928 accepted as Echinolaophonte hystrix (Brian, 1928)
- Species Laophonte ifalukensis Vervoort, 1964
- Species Laophonte inopinata T. Scott, 1892
- Species Laophonte inornata A. Scott, 1902
- Species Laophonte insignis T. Scott, 1914 accepted as Heterolaophonte insignis (T. Scott, 1914)
- Species Laophonte intermedia T. Scott, 1895 accepted as Asellopsis intermedia (T. Scott, 1895)
- Species Laophonte karmensis G.O. Sars, 1911 accepted as Paralaophonte karmensis (G.O. Sars, 1911)
- Species Laophonte kliei Monard, 1935 accepted as Klieonychocamptus kliei (Monard, 1935)
- Species Laophonte koreni Boeck, 1872 accepted as Pseudonychocamptus koreni (Boeck, 1872)
- Species Laophonte lamellifera (Claus, 1863) accepted as Cleta lamellifera Claus, 1863
- Species Laophonte lamellipes Nicholls, 1944
- Species Laophonte laurentica Nicholls, 1941 accepted as Heterolaophonte laurentica (Nicholls, 1941)
- Species Laophonte leuke (Por, 1959)
- Species Laophonte lignosa Hicks, 1988
- Species Laophonte litophila Monard, 1934
- Species Laophonte littoralis T. Scott & A. Scott, 1893 accepted as Heterolaophonte littoralis (T. Scott & A. Scott, 1893)
- Species Laophonte longicaudata Boeck, 1865
- Species Laophonte longipes T. Scott, 1894 accepted as Paralaophonte longipes (T. Scott, 1894)
- Species Laophonte longiremis T. Scott, 1905 accepted as Esola longiremis (T. Scott, 1905)
- Species Laophonte longiseta Nicholls, 1941 accepted as Mourephonte longiseta (Nicholls, 1941)
- Species Laophonte longistylata Willey, 1935
- Species Laophonte lunata Willey, 1930 accepted as Paralaophonte lunata (Willey, 1930)
- Species Laophonte macani Sewell, 1940
- Species Laophonte macera G.O. Sars, 1908 accepted as Paralaophonte macera (G.O. Sars, 1908)
- Species Laophonte manifera C.B. Wilson, 1932 accepted as Heterolaophonte manifera (C.B. Wilson, 1932)
- Species Laophonte meinerti Brady, 1899 accepted as Paralaophonte meinerti (Brady, 1899)
- Species Laophonte mendax Klie, 1939 accepted as Heterolaophonte mendax (Klie, 1939)
- Species Laophonte minuta Boeck, 1873 accepted as Heterolaophonte minuta (Boeck, 1873)
- Species Laophonte minuticornis (Buchholz, 1874) accepted as Onychocamptus horridus (Norman, 1876)
- Species Laophonte mirabilis Gurney, 1927 accepted as Echinolaophonte mirabilis (Gurney, 1927)
- Species Laophonte mississippiensis Herrick, 1887
- Species Laophonte mohammed Blanchard & Richard, 1891 accepted as Onychocamptus mohammed (Blanchard & Richard, 1891)
- Species Laophonte nana G.O. Sars, 1908 accepted as Paronychocamptus nanus (G.O. Sars, 1908)
- Species Laophonte nordgaardi G.O. Sars, 1908
- Species Laophonte norlandica Boeck, 1872
- Species Laophonte octavia Monard, 1935 accepted as Paralaophonte octavia (Monard, 1935)
- Species Laophonte oculata Gurney, 1927 accepted as Heterolaophonte oculata (Gurney, 1927)
- Species Laophonte parvula G.O. Sars, 1908
- Species Laophonte parvuloides Monard, 1935
- Species Laophonte pauciseta Lang, 1936 accepted as Heterolaophonte pauciseta (Lang, 1936)
- Species Laophonte perplexa T. Scott, 1899
- Species Laophonte phycobates Monard, 1935 accepted as Heterolaophonte phycobates (Monard, 1935)
- Species Laophonte pilosa Car, 1884 accepted as Heterolaophonte uncinata (Czerniavski, 1868)
- Species Laophonte plana Fiers, 1986
- Species Laophonte platychelipusioides Noodt, 1958 accepted as Coullia platychelipusioides (Noodt, 1958)
- Species Laophonte propinqua T. Scott & A. Scott, 1895 accepted as Laophonte serrata (Claus, 1863)
- Species Laophonte proxima G.O. Sars, 1908 accepted as Pseudonychocamptus proximus (G.O. Sars, 1908)
- Species Laophonte proximus (G.O. Sars, 1908) accepted as Pseudonychocamptus proximus (G.O. Sars, 1908)
- Species Laophonte pseudoculata Krishnaswamy, 1959
- Species Laophonte pseudooculata Krishnaswamy, 1959
- Species Laophonte pygmaea T. Scott, 1893 accepted as Heterolaophonte pygmaea (T. Scott, 1893)
- Species Laophonte quaterspinata Brian, 1917 accepted as Paralaophonte quaterspinata (Brian, 1917)
- Species Laophonte quinquespinosa Sewell, 1924 accepted as Heterolaophonte quinquespinosa (Sewell, 1924)
- Species Laophonte recticaudata Willey, 1935
- Species Laophonte reticaudata Willey, 1935
- Species Laophonte rhodiaca Brian, 1928 accepted as Esola bulbifera (Norman, 1911)
- Species Laophonte rosei Monard, 1926 accepted as Esola rosei (Monard, 1926)
- Species Laophonte rottenburgi T. Scott, 1912 accepted as Heterolaophonte rottenburgi (T. Scott, 1912)
- Species Laophonte royi Jakubisiak, 1932 accepted as Paralaophonte royi (Jakubisiak, 1932)
- Species Laophonte sagenarum Oliveira, 1945 accepted as Euterpina acutifrons (Dana, 1847)
- Species Laophonte serrata (Claus, 1863)
- Species Laophonte setosa Boeck, 1865
- Species Laophonte sigmoides Willey, 1931 accepted as Heterolaophonte sigmoides (Willey, 1931)
- Species Laophonte sima Gurney, 1927
- Species Laophonte similicornuta Gómez & Boyko, 2006
- Species Laophonte similis (Claus, 1866) accepted as Laophonte setosa Boeck, 1865
- Species Laophonte simulans T. Scott, 1894 accepted as Harrietella simulans (T. Scott, 1894)
- Species Laophonte spelaea Chappuis, 1938 accepted as Esola spelaea (Chappuis, 1938)
- Species Laophonte spinicauda (Vervoort, 1964)
- Species Laophonte spinifer Kunz, 1975 accepted as Laophonte spinicauda (Vervoort, 1964)
- Species Laophonte spinosa I.C. Thompson, 1893 accepted as Pseudocletopsyllis spinosa (I.C. Thompson, 1893)
- Species Laophonte sporadiensis Brian, 1928
- Species Laophonte steueri Douwe, 1929 accepted as Laophonte hystrix Brian, 1928
- Species Laophonte stroemii (Baird, 1834) accepted as Heterolaophonte stroemii (Baird, 1834)
- Species Laophonte subsalsa Brady, 1902 accepted as Heterolaophonte minuta (Boeck, 1873)
- Species Laophonte talipes C.B. Wilson, 1932 accepted as Onychocamptus talipes (C.B. Wilson, 1932)
- Species Laophonte taurina Monard, 1928 accepted as Paralaophonte taurina (Monard, 1928)
- Species Laophonte tenera G.O. Sars, 1920 accepted as Paralaophonte tenera (G.O. Sars, 1920)
- Species Laophonte tenuispina Lang, 1934 accepted as Heterolaophonte tenuispina (Lang, 1934)
- Species Laophonte thoracica Boeck, 1865
- Species Laophonte trilobata Willey, 1929
- Species Laophonte trispinosa Sewell, 1940 accepted as Xanthilaophonte trispinosa (Sewell, 1940)
- Species Laophonte typhlops G.O. Sars, 1908 accepted as Esola typhlops (G.O. Sars, 1908)
- Species Laophonte uncinata Chichkoff, 1912 accepted as Heterolaophonte uncinata (Czerniavski, 1868)
- Species Laophonte varians Brady, 1910
- Species Laophonte vietsi Klie, 1941 accepted as Heterolaophonte uncinata (Czerniavski, 1868)
- Species Laophonte vitiospinulosa Shen & Tai, 1963 accepted as Onychocamptus vitiospinulosa (Shen & Tai, 1963)
- Species Laophonte wiltoni T. Scott, 1912
- Species Laophonte zimmeri Douwe, 1929 accepted as Paralaophonte zimmeri (Douwe, 1929)
- Genus Laophonte Lang, 1948 accepted as Laophonte Philippi, 1840
- Genus Laophontina Norman & Scott, 1905
- Genus Lipomelum Fiers, 1986
- Genus Lobitella Monard, 1934
- Genus Loureirophonte Jakobi, 1953
- Genus Maiquilaophonte Mielke, 1985
- Genus Marbefia Huys & Lee, 2009
- Genus Mesolaophonte Nicholls, 1941
- Genus Mexicolaophonte Cottarelli, 1977
- Genus Microchelonia Brady, 1918
- Genus Microlaophonte Vervoort, 1964
- Genus Mictyricola Nicholls, 1957
- Genus Mielkiella George, 1997
- Genus Moerephonte Jakobi, 1953 accepted as Mourephonte Jakobi, 1953
- Genus Monolaophonte Nicholls, 1941
- Genus Mourephonte Jakobi, 1953
- Genus Namakosiramia Ho & Perkins, 1977 accepted as Microchelonia Brady, 1918
- Genus Neolaophonte Nicholls, 1941
- Genus Novolaophonte Cottarelli, Saporito & Puccetti, 1983
- Genus Onychocamptus Daday, 1903
- Genus Onychoquinpes Gómez & Morales-Serna, 2013
- Genus Paeudonychocamptus
- Genus Paralaophonte Lang, 1944 accepted as Paralaophonte Lang, 1948
- Genus Paralaophonte Lang, 1948
- Genus Paranychocamptus Lang, 1944 accepted as Paronychocamptus Lang, 1948
- Genus Paronychocamptus Lang, 1948
- Genus Paronychocamptus Lang, 1944 accepted as Paronychocamptus Lang, 1948
- Genus Peltidiphonte Gheerardyn & Fiers, 2006
- Genus Philippiphonte Huys & Lee, 2018
- Genus Phycolaophonte Pallares, 1975 accepted as Coullia Hamond, 1973
- Genus Pilifera Noodt, 1952
- Genus Platychelipus Brady, 1880
- Genus Platylaophonte Bodin, 1968
- Genus Pontophonte Lee & Huys, 1999
- Genus Propephonte Gheerardyn & Fiers, 2006
- Genus Psammolaophonte Wells, 1967
- Genus Psammoplatypus Lee & Huys, 1999
- Genus Pseudocleta Lang, 1948 accepted as Pseudocleta Lang, 1944
- Genus Pseudocletopsyllis
- Genus Pseudolaophonte A. Scott, 1896
- Genus Pseudonychocamptus Lang, 1944
- Genus Quinquelaophonte Wells, Hicks & Coull, 1982
- Genus Raowellsia Özdikmen, 2008
- Genus Raptolaophonte Cottarelli & Forniz, 1989
- Genus Robustunguis Fiers, 1992
- Genus Spiniferaphonte Gheerardyn & Fiers in Gheerardyn et al., 2007
- Genus Spiniferaponte Gheerardyn & Fiers, 2007
- Genus Stygolaophonte Lang, 1965
- Genus Tapholeon Wells, 1967
- Genus Troglophonte Huys & Lee, 2000
- Genus Vostoklaophonte Yeom, Nikitin, Ivanenko & Lee, 2018
- Genus Weddellaophonte Willen, 1996
- Genus Wellsiphontina Fiers, 1991
- Genus Wellsiphorztina
- Genus Xanthilaophonte Fiers, 1991
- Family Laophontopsidae Huys & Willems, 1989
- Family Latiremidae Bozic, 1969
- Family Leptastacidae Huys, 1992
- Family Leptopontiidae Lang, 1948
- Family Louriniidae Monard, 1927
- Family Metahuntemanniidae Por, 1986 accepted as Canthocamptidae Brady, 1880
- Family Metidae G.O. Sars, 1910
- Family Miracidae accepted as Miraciidae Dana, 1846
- Family Miraciidae Dana, 1846
- Family Nannopodidae Brady, 1880
- Family Neobradyidae Olofsson, 1917
- Family Normanellidae Huys & Willems, 1989
- Family Novocriniidae Huys & Iliffe, 1998
- Family Orthopsyllidae Huys, 1990
- Family Parameiropsidae Corgosinho & Martínez Arbizu, 2010
- Family Paramesochridae Lang, 1944
- Family Paranannopidae Por, 1986 accepted as Pseudotachidiidae Lang, 1936
- Family Parastenheliidae Lang, 1936
- Family Parastenocarididae Chappuis, 1933
- Family Parastentheliidae Lang, 1936 accepted as Parastenheliidae Lang, 1936
- Family Peltidiidae G.O. Sars, 1904
- Family Phyllognathopodidae Gurney, 1932
- Family Porcellidiidae G.O. Sars, 1904
- Family Protolatiremidae Bozic, 1969
- Family Psammopsyllidae accepted as Leptopontiidae Lang, 1948
- Family Pseudopeltidiidae Poppe, 1891 accepted as Clytemnestridae A. Scott, 1909
- Family Pseudotachidiidae Lang, 1936
- Family Rhizothricidae Por, 1986 accepted as Rhizotrichidae Por, 1986
- Family Rhizotrichidae Por, 1986
- Family Rhynchothalestridae Lang, 1948 accepted as Thalestridae G.O. Sars, 1905
- Family Rometidae Seifried & Schminke, 2003
- Family Rotundiclipeidae Huys, 1988
- Family Styracothoracidae Huys, 1993 accepted as Idyanthidae Lang, 1948
- Family Superornatiremidae Huys, 1991
- Family Tachidiidae G.O. Sars, 1909
- Family Tegastidae G.O. Sars, 1904
- Family Tetragonicepsidae Lang, 1944
- Family Tetragonicipitidae Lang, 1944
- Family Thalestridae G.O. Sars, 1905
- Family Thompsonulidae Lang, 1944
- Family Tisbidae Stebbing, 1910
- Family Zosimeidae Seifried, 2003
- Family Zosimidae Seifried, 2003 accepted as Zosimeidae Seifried, 2003
- Order Ibliformes
- Order Kentrogonida
- Order Laurida
- Order Lernaeopodida
- Order Maxillopoda (awaiting allocation)
- Order Misophrioida
- Order Monstrilloida
- Order Mormonilloida
- Order Mystacocaridida
- Order Orstenocarida
- Order Pedunculata
- Order Pentastomida (awaiting allocation)
- Order Pentastomida incertae sedis
- Order Platycopioida
- Order Poecilostomatoida
- Order Pygophora
- Order Rhizocephala (awaiting allocation)
- Order Scalpelliformes
- Order Sessilia
- Order Siphonostomatoida
- Order Skaracarida †
- 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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