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
- Subphylum Hexapoda
- Subphylum Myriapoda
- Class Arthropleuridea †
- Class Chilopoda
- Class Diplopoda
- Order Amynilyspedida
- Order Archidesmida †
- Order Archipolypoda † accepted as Euphoberiida †
- Order Archipolypoda (awaiting allocation) †
- Order Callipodida
- Order Chordeumatida
- Order Craspedosomatida
- Order Diplopoda (awaiting allocation)
- Order Euphoberiida †
- Order Glomerida
- Order Glomeridesmida
- Order Haplogonophora accepted as Spirobolida
- Order Julida
- Order Platydesmida
- Order Polydesmida
- Family Ammodesmidae
- Family Aphelidesmidae Brölemann, 1916
- Family Campodesmidae
- Family Chelodesmidae Cook, 1895
- Family Chytodesmidae Cook, 1896
- Family Cryptodesmidae Karsch, 1880
- Family Cyrtodesmidae
- Family Dalodesmidae Cook, 1896
- Family Dalodesmidea incertae sedis
- Family Dobrodesmidae Shear, Ferreira & Iniesta in Shear et al., 2016
- Family Doratodesmidae
- Family Dorsoporidae
- Family Eurymerodesmidae Causey, 1951 accepted as Xystodesmidae Cook, 1895
- Family Euryuridae Pocock, 1909 accepted as Xystodesmidae Cook, 1895
- Family Fuhrmannodesmidae
- Family Gomphodesmidae
- Family Haplodesmidae Cook, 1895
- Family Holistophallidae
- Family Macrosternodesmidae Brölemann, 1916
- Family Nearctodesmidae
- Family Oniscodesmidae
- Family Opisotretidae
- Family Oxydesmidae
- Family Paradoxosomatidae Daday, 1889
- Genus Aethalosoma Jeekel, 2006
- Genus Agnesia Attems, 1953
- Genus Akamptogonus Attems, 1917
- Genus Aklerobunus Attems, 1931
- Genus Akribosoma Carl, 1935
- Genus Alogolykus Attems, 1936
- Genus Annamina Attems, 1938
- Genus Anoplodesmus Pocock, 1895
- Genus Antheromorpha Jeekel, 1968
- Genus Antichiropus Attems, 1911
- Genus Aponedyopus Verhoeff, 1939
- Genus Archicladosoma Jeekel, 1984
- Genus Arthrogonopus Jeekel, 1963
- Genus Aschistodesmus Pocock in Willey, 1898
- Genus Asiomorpha Verhoeff, 1939
- Genus Astromontosoma Hoffman, 1978
- Genus Atropisoma Silvestri, 1897
- Genus Aulacoporus Verhoeff, 1924
- Genus Australiosoma Brölemann, 1913
- Genus Australodesmus Chamberlin, 1920
- Genus Belousoviella Golovatch, 2012
- Genus Beronodesmoides Golovatch, 2015
- Genus Beronodesmus Golovatch, 2014
- Genus Binarcifer Mesibov, 2013
- Genus Boreohesperus Shear, 1992
- Genus Borneochiropus Golovatch, 1996
- Genus Borneonina Jeekel, 1963
- Genus Brachytropis Silvestri, 1896
- Genus Brasilogonopus Verhoeff, 1943
- Genus Brochopeltis Verhoeff, 1924
- Genus Caloma Chamberlin, 1945
- Genus Campsogon Chamberlin, 1951
- Genus Carinorthomorpha Golovatch, 2000
- Genus Carlogonopus Golovatch, Aswathy, Bhagirathan & Sudhikumar, 2021
- Genus Carvalhodesmus Schubart, 1945
- Genus Catharosoma Silvestri, 1897
- Genus Cawjeekelia Golovatch, 1980
- Genus Cemsunguria Özdikmen, 2007
- Genus Centrocladus Jeekel, 2006 accepted as Isocladosoma Jeekel, 1984
- Genus Centrodesmus Pocock in Weber, 1894
- Genus Ceylonesmus Chamberlin, 1941 accepted as Desmoxytes Chamberlin, 1923
- Genus Chamberlinius Wang, 1956
- Genus Chapanella Attems, 1953
- Genus Chinomorpha Golovatch, 2011
- Genus Chinosoma Chamberlin, 1923
- Genus Chondromorpha Silvestri, 1897
- Genus Cladethosoma Chamberlin, 1920
- Genus Cleptomorpha Golovatch, 1997
- Genus Cnemodesmella Vandenspiegel & Golovatch, 2007
- Genus Cnemodesmina Kraus, 1958
- Genus Cnemodesmus Cook, 1896
- Genus Congolina Attems, 1938
- Genus Curiosoma Golovatch, 1984
- Genus Dajakina Jeekel, 1963
- Genus Dasomus Chamberlin, 1941
- Genus Dasypharkis Attems, 1936
- Genus Delarthrum Attems, 1936
- Genus Dendrogonopus Jeekel, 1964
- Genus Desmolius Chamberlin, 1951
- Genus Desmoxytes Chamberlin, 1923
- Genus Desmoxytoides Mesibov, 2006
- Genus Dicladosoma Brölemann, 1913
- Genus Dicladosomella Jeekel, 1982
- Genus Dicranogonus Jeekel, 1982
- Genus Diglossosternoides Golovatch & Korsos, 1992
- Genus Dorcadogonus Jeekel, 1999
- Genus Dysthymus Attems, 1929
- Genus Ectodesmus Cook, 1898
- Genus Elatosus Chamberlin, 1945
- Genus Ergethus Chamberlin, 1949
- Genus Eroonsoma Manfredi, 1943
- Genus Eudasypeltis Pocock, 1895
- Genus Eungellosoma Mesibov, 2013
- Genus Euphyodesmus Attems, 1931
- Genus Eustrongylosoma Silvestri, 1896
- Genus Eviulisoma Silvestri, 1910
- Genus Fontaria Gray in Griffith & Pidgeon, 1831
- Genus Geniculodesmus Chen, Golovatch & Chang, 2008
- Genus Gigantomorpha Jeekel, 1963
- Genus Gigantowales Verhoeff, 1937
- Genus Gigaxytes Srisonchai, Enghoff & Panha in Srisonchai et al., 2018
- Genus Gonobelus Attems, 1936
- Genus Gonodrepanoides Schubart, 1945
- Genus Gonodrepanum Attems, 1914
- Genus Grammorhabdus Carl, 1932
- Genus Graphisternum Verhoeff, 1951
- Genus Gyrodrepanum Carl, 1932 accepted as Polydrepanum Carl, 1932
- Genus Habrodesmella Kraus, 1956
- Genus Habrodesmoides Attems, 1943
- Genus Habrodesmus Cook, 1896
- Genus Haplethosoma Jeekel, 2006 accepted as Cladethosoma Chamberlin, 1920
- Genus Haplodesmus Cook, 1896
- Genus Haplogonomorpha Mrsic, 1996
- Genus Hedinomorpha Verhoeff, 1934
- Genus Helicopodosoma Verhoeff, 1924
- Genus Helicopodosomella Verhoeff, 1924 accepted as Helicopodosoma Verhoeff, 1924
- Genus Helicorthomorpha Attems, 1914
- Genus Hemigonodrepanum Schubart, 1954
- Genus Heterocladosoma Jeekel, 1968
- Genus Himantogonus Carl, 1932
- Genus Himatiopus Verhoeff, 1940
- Genus Hindomorpha Golovatch, 1984 accepted as Polydrepanum Carl, 1932
- Genus Hirtodrepanum Golovatch, 1994
- Genus Hoffmaneuma Strasser, 1979 accepted as Hoffmaneumella Spelda, Golovatch & Wytwer, 2005
- Genus Hoffmaneumella Spelda, Golovatch & Wytwer, 2005
- Genus Hoplatessara Verhoeff, 1928
- Genus Hoplatessaropus Verhoeff, 1941 accepted as Hoplatessara Verhoeff, 1928
- Genus Hoplatria Verhoeff, 1941
- Genus Howeosoma Jeekel, 2006
- Genus Hylaiopus Verhoeff, 1951
- Genus Hylomus Cook & Loomis, 1924
- Genus Hypsoporus Loomis, 1969 †
- Genus Inversispina Zhang in Zhang Chongzhou, Wang Daqing & Zhang Fuxiang, 1997
- Genus Isocladosoma Jeekel, 1984
- Genus Jeekelomorpha Golovatch & Semenyuk, 2018
- Genus Jonespeltis Verhoeff, 1936
- Genus Julidesmus Silvestri, 1895
- Genus Kalorthomorpha Attems, 1914
- Genus Kansupus Verhoeff, 1934
- Genus Kochliopus Verhoeff, 1934
- Genus Kronopolites Attems, 1914
- Genus Lasiodesmus Silvestri, 1908
- Genus Laterogonopus Golovatch, 1984
- Genus Laviusoma Kraus, 1956
- Genus Leiosoma Silvestri, 1897
- Genus Leucotessara Verhoeff, 1928 accepted as Cladethosoma Chamberlin, 1920
- Genus Liliputia Attems, 1952
- Genus Lippus Özdikmen, 2009
- Genus Lohmanderodesmus Schubart, 1934
- Genus Lundacus Chamberlin, 1951
- Genus Lundasoma Chamberlin, 1951
- Genus Luzonomorpha Hoffman, 1973 †
- Genus Malayorthomorpha Mrsic, 1996
- Genus Mandarinopus Verhoeff, 1934
- Genus Manikidesmus Bhakat, 2021
- Genus Margaritosoma Jeekel, 1979
- Genus Mestosoma Silvestri, 1897
- Species Mestosoma isthmianum Loomis, 1961
- Species Mestosoma moorei Hoffman, 1977
- Species Mestosoma semirugosum (Pocock, 1888)
- Genus Metonomastus Attems, 1937
- Genus Microdesminus Strasser, 1960
- Genus Microdesmus Verhoeff, 1901
- Genus Mimosoma Chamberlin, 1920
- Genus Mjoebergodesmus Verhoeff, 1924
- Genus Mogyella Schubart, 1944
- Genus Mogyosoma Schubart, 1944
- Genus Montesecaria Kraus, 1956
- Genus Morogosoma Verhoeff, 1940
- Genus Myallosoma Verhoeff, 1928
- Genus Nagaxytes Srisonchai, Enghoff & Panha in Srisonchai et al., 2018
- Genus Nannodesmus Chamberlin, 1943
- Genus Nasmodesosoma Hoffman & Howell, 1985
- Genus Nearctoma Chamberlin, 1953
- Genus Nedyopus Attems, 1914
- Genus Neotrachydesmus Silvestri, 1897
- Genus Nepalomorpha Golovatch, 1994
- Genus Nesorthomorpha Jeekel, 1980
- Genus Nothrosoma Attems, 1929
- Genus Notodesmus Chamberlin, 1920
- Genus Ologonosoma Silvestri, 1897
- Genus Onciurosoma Silvestri, 1932
- Genus Oncocladosoma Jeekel, 1985
- Genus Orangutana Golovatch, 1996
- Genus Oranmorpha Verhoeff, 1940
- Genus Orientosoma Golovatch, 1980
- Genus Orocladosoma Jeekel, 2000
- Genus Orthomorpha Bollman, 1893
- Genus Orthomorphina Kraus, 1958 accepted as Asiomorpha Verhoeff, 1939
- Genus Orthomorphoides Likhitrakarn, Golovatch & Panha, 2011
- Genus Otoplacosoma Verhoeff, 1924 accepted as Helicopodosoma Verhoeff, 1924
- Genus Oxidus Cook, 1911
- Genus Paitomus Chamberlin, 1957
- Genus Papuosoma Chamberlin, 1945
- Genus Paracatharosoma Kraus, 1959
- Genus Paradesmus Saussure, 1859
- Genus Paradoxosoma Daday, 1889
- Genus Paranedyopus Carl, 1932
- Genus Parasundanina Golovatch, 2019
- Genus Paratylopus Korsos & Golovatch, 1989
- Genus Paraulacoporus Verhoeff, 1928 accepted as Aulacoporus Verhoeff, 1924
- Genus Paraustraliosoma Verhoeff, 1924
- Genus Parorthomorpha Golovatch, 1994
- Genus Partelsodolichus Verhoeff, 1941
- Genus Parwalesoma Verhoeff, 1937
- Genus Peridontopyge Silvestri, 1907
- Genus Perittogonopus Jeekel, 2003
- Genus Perittotresis Attems, 1914
- Genus Pernambucosoma Schubart, 1939
- Genus Perusoma Verhoeff, 1951
- Genus Phaeodesmus Cook, 1898
- Genus Phyllocladosoma Jeekel, 1968
- Genus Piccola Attems, 1953
- Genus Pleuroporodesmus Jeekel, 1983
- Genus Pocockina Jeekel, 1965
- Genus Podochresimus Attems in Kukenthal-Krumbach, 1926
- Genus Pogonosternum Jeekel, 1965
- Genus Pogonsternum Jeekel, 1965 accepted as Pogonosternum Jeekel, 1965
- Genus Polydrepanum Carl, 1932
- Genus Polylobosoma Jeekel, 1980
- Genus Porcullosoma Kraus, 1956
- Genus Praeterpediculus Vohland, 2013
- Genus Pratinus Attems, 1937 accepted as Desmoxytes Chamberlin, 1923
- Genus Prionopeltis Pocock, 1895 accepted as Desmoxytes Chamberlin, 1923
- Genus Promestosoma Silvestri, 1898
- Genus Pseudogonodrepanum Schubart, 1945
- Genus Pseudostrongylosoma Verhoeff, 1924
- Genus Pseudosundanina Nguyen, 2010
- Genus Rhopalowales Verhoeff, 1928 accepted as Australiosoma Brölemann, 1913
- Genus Riukiupeltis Verhoeff, 1939
- Genus Sapamorpha Golovatch, 2009
- Genus Scolodesmus Cook, 1896
- Genus Sellanucheza Enghoff, Golovatch & Nguyen Duc, 2004
- Genus Selminosoma Hoffman, 1978
- Genus Shelleyomorpha Golovatch, 1997
- Genus Sichotanus Attems, 1914
- Genus Sigipinius Hoffman, 1961
- Genus Sinomorpha Golovatch, 2013
- Genus Solaenodolichopus Verhoeff, 1924
- Genus Solanodolichopus Verhoeff, 1928 accepted as Solaenodolichopus Verhoeff, 1924
- Genus Solomonosoma Chamberlin, 1920
- Genus Somethus Chamberlin, 1920
- Genus Sphalmatogonus Jeekel, 1980
- Genus Spinaxytes Srisonchai, Enghoff & Panha in Srisonchai et al., 2018
- Genus Stosatea Gray in Todd, 1843
- Genus Strandiellus Attems, 1927
- Genus Streptocladosoma Jeekel, 1980
- Genus Streptogonopus Attems, 1914
- Genus Strongylosoma Brandt, 1833
- Genus Stygiochiropus Humphreys & Shear, 1993
- Genus Substrongylosoma Golovatch, 1984
- Genus Sulciferus Attems, 1898
- Genus Sumatreonina Golovatch, 1995
- Genus Sundanina Attems, 1914
- Genus Sundaninella Jeekel, 1968
- Genus Suohelisoma Hoffman, 1964
- Genus Szechuanella Hoffman, 1961
- Genus Tectoporus Carl, 1902
- Genus Telodrepanum Carl, 1932
- Genus Tetracentrosternus Pocock, 1895
- Genus Thalatthipurus Attems, 1932
- Genus Tholerosoma Mesibov, 2006
- Genus Titschackia Verhoeff, 1951
- Genus Tonkinosoma Jeekel, 1953
- Genus Topalosoma Golovatch, 1984
- Genus Touranella Attems, 1938
- Genus Trachydesmus Daday, 1889
- Genus Tricladosoma Brölemann, 1916 accepted as Akamptogonus Attems, 1917
- Genus Tridactylogonus Jeekel, 1982
- Genus Trogodesmus Pocock, 1895
- Genus Tropisoma Koch, 1844
- Genus Tylopus Jeekel, 1968
- Genus Umbridesmus Vohland, 2013
- Genus Vietnamorpha Golovatch, 1984
- Genus Walesoma Verhoeff, 1928
- Genus Walestessara Verhoeff, 1937 accepted as Cladethosoma Chamberlin, 1920
- Genus Wubidesmus Chamberlin, 1927
- Genus Wulingina Zhang in Zhang Chongzhou, Wang Daqing & Zhang Fuxiang, 1997
- Genus Xanthodesmus Cook, 1898
- Genus Xaymacia Loomis, 1948
- Genus Xenosoma Chamberlin, 1945
- Genus Xiphidiogonus Carl, 1932
- Genus Zelanodesmus Chamberlin, 1920 accepted as Akamptogonus Attems, 1917
- Family Platyrhacidae
- Family Polydesmida (awaiting allocation)
- Family Polydesmidae
- Family Pyrgodesmidae
- Family Rhachodesmidae
- Family Sphaeriodesmidae
- Family Stylodesmidae
- Family Trichopolydesmidae
- Family Tridontomidae
- Family Vaalogonopodidae
- Family Xystodesmidae Cook, 1895
- Genus Aipotropis Chamberlin, 1920
- Order Polyxenida
- Order Polyzoniida
- Order Progonophora accepted as Spirostreptida
- Order Siphoniulida
- Order Siphonophorida
- Order Sphaerotheriida
- Order Spirobolida
- Order Spirostreptida
- Order Stemmiulida
- Order Zosterogrammida †
- Family Hexecontasomatidae Hannibal, 2000 †
- Family Proglomeridae Fritsch, 1899 †
- Family Woodesmidae Ross, Edgecombe & Clark in Ross et al., 2017 †
- Genus Albadesmus Wilson & Anderson, 2004 †
- Genus Anthracodesmus Peach, 1899 †
- Genus Anthracojulus Fritsch, 1899 †
- Genus Archicambala Cook, 1896 †
- Genus Hiodesmus Cook, 1896
- Genus Pneumodesmus Wilson & Anderson, 2004 †
- Genus Sinosoma Huang & Hannibal, 2018 †
- Genus Stereodesmus Cook, 1896
- Class Euthycarcinoidea †
- Class Pauropoda
- Class Symphyla
- Family Oklahomasomatidae Hannibal & May, 2020 †
- Genus Archicarabides Fritsch, 1901 †
- Genus Dolesea Hannibal & May, 2020 †
- Genus Karstiulus Hannibal & May, 2020
- Genus Kralupia Fritsch, 1907 †
- 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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