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
- Class Collembola
- Class Diplura
- Class Entognatha accepted as Hexapoda
- Class Insecta
- Order Alienoptera † accepted as Blattodea
- Order Amphiesmenoptera incertae sedis †
- Order Anoplura accepted as Phthiraptera
- Order Archaeognatha
- Order Archaeorthoptera (awaiting allocation) †
- Order Archaeorthoptera incertae sedis
- Order Argentinoptera †
- Order Blattodea
- Order Blattoptera †
- Order Caloneurida
- Order Caloneurodea †
- Order Cnemidolestodea †
- Order Coleoptera
- Order Coxoplectoptera †
- Order Dermaptera
- Order Diaphanopterodea †
- Order Diaphanopteroidea accepted as Diaphanopterodea †
- Order Dicliptera †
- Order Dicondylia incertae sedis
- Order Dictyoptera (awaiting allocation)
- Order Dictyoptera incertae sedis
- Order Diptera
- Order Embiodea
- Order Endopterygota incertae sedis
- Order Eoblattida †
- Order Ephemeroptera
- Family Acanthametropodidae
- Family Aenigmephemeridae Tshernova, 1968 †
- Family Ameletidae
- Family Ameletopsidae Edmunds, 1957
- Family Ametropidae Bengtsson, 1913 accepted as Ametropodidae Bengtsson, 1913
- Family Ametropodidae Bengtsson, 1913
- Family Aphelophlebodidae Pierce, 1945 †
- Family Arthropleidae Balthasar, 1937
- Family Astraeopteridae Storari, Staniczek & Godunko, 2023 †
- Family Australiphemeridae McCafferty, 1991
- Family Babidae Kluge, Godunko & Krzeminski, 2006 †
- Family Baetidae Leach, 1815
- Family Baetiscidae Banks, 1900
- Family Behningiidae Motas & Bacesco, 1937
- Family Binoculidae Demoulin, 1954 accepted as Prosopistomatidae Lameere, 1917
- Family Bojophlebiidae Kukalova-Peck, 1985 †
- Family Brachycercidae Lestage, 1924 accepted as Caenidae Newman, 1853
- Family Caenidae Newman, 1853
- Family Callibaetidae Riek, 1973 accepted as Baetidae Leach, 1815
- Family Cloeonidae Newman, 1853 accepted as Baetidae Leach, 1815
- Family Coenidae Newman, 1853 accepted as Caenidae Newman, 1853
- Family Coloburiscidae
- Family Dipteromimidae Kluge, Studemann, Landolt & Gonser, 1995 accepted as Siphlonuridae Banks, 1900
- Family Ecdyoneuridae
- Family Epeoromimidae Tshernova, 1969 †
- Family Ephemerellidae Klapálek, 1909
- Family Ephemeridae Leach, 1817
- Family Ephemeropsidae Cockerell, 1927 † accepted as Hexagenitidae Lameere, 1917 †
- Family Ephemeroptera (awaiting allocation)
- Family Ephemeroptera incertae sedis †
- Family Ephemerythidae Gillies, 1960
- Family Ephoridae Traver in Needham, Traver & Hsu, 1935 accepted as Polymitarcyidae Banks, 1900
- Family Euthyplociidae Lestage, 1921
- Family Fuyoidae Zhang & Kluge, 2007 †
- Family Heptaeniidae accepted as Heptageniidae Needham, 1901
- Family Heptageniidae Needham, 1901
- Family Hexagenitidae Lameere, 1917 †
- Family Hexgenitidae † accepted as Hexagenitidae Lameere, 1917 †
- Family Isonychiidae
- Family Jarmilidae Demoulin, 1970 †
- Family Leptohyphidae Edmunds & Traver, 1954
- Family Leptophlebiidae Banks, 1900
- Genus Acanthophlebia Clarke, 1986
- Genus Acanthophlebia Towns, 1983
- Genus Adenophlebia Eaton, 1881
- Genus Adenophlebiodes Ulmer, 1924
- Genus Amoa Peters & Peters, 2000
- Genus Anodela Peters & Mary, 2016 accepted as Neampia Peters & Mary, 2016
- Genus Aprionyx Barnard, 1932
- Genus Arachnocolus Towns & Peters, 1979
- Genus Araucophlebia Kluge, 2014 accepted as Nousia Navás, 1918
- Genus Archethraulodes Pescador & Peters, 1982
- Genus Askola Peters, 1969
- Genus Atalomicria Harker, 1954
- Genus Atalonella Needham & Murphy, 1924
- Genus Atalophlebia Eaton, 1881
- Genus Atalophlebioides Philipps, 1930
- Genus Atopophlebia Flowers, 1980
- Genus Atroari Savage & Peters, 1983 accepted as Miroculis Edmunds, 1963
- Genus Aupouriella Winterbourn, 2009
- Genus Aureophlebia Peters & Peters, 2000 †
- Genus Australonousia Campbell & Suter, 1988 accepted as Nousia Navás, 1918
- Genus Australphlebia Peters, 1971 accepted as Hagenulopsis Ulmer, 1924
- Genus Austroclima Towns & Peters, 1979
- Genus Austronella Towns & Peters, 1996
- Genus Austrophlebioides Campbell & Suter, 1988
- Genus Barba Grant & Peters, 1993
- Genus Bessierus Thomas & Orth in Thomas, Orth, Horeau & Dominique, 2001
- Genus Bibulmena Dean, 1987
- Genus Blasturophlebia Demoulin, 1968 †
- Genus Blasturus Eaton, 1881 accepted as Leptophlebia Westwood, 1840
- Species Blasturus austrinus Traver, 1932 accepted as Leptophlebia austrina (Traver, 1932)
- Species Blasturus collinus Traver, 1932 accepted as Leptophlebia cupida (Say, 1823)
- Species Blasturus gracilis Traver, 1932 accepted as Leptophlebia johnsoni McDunnough, 1924
- Species Blasturus grandis Traver, 1932 accepted as Leptophlebia cupida (Say, 1823)
- Species Blasturus gravastellus Eaton, 1884 accepted as Leptophlebia gravastella (Eaton, 1884)
- Species Blasturus intermedius Traver, 1932 accepted as Leptophlebia intermedia (Traver, 1932)
- Species Blasturus nebulosus (Walker, 1853) accepted as Leptophlebia nebulosa (Walker, 1853)
- Species Blasturus pacificus McDunnough, 1933 accepted as Leptophlebia pacifica (McDunnough, 1933)
- Species Blasturus vibex Traver, 1934 accepted as Leptophlebia pacifica (McDunnough, 1933)
- Genus Borinquena Traver, 1938
- Genus Calliarcys Eaton, 1881
- Genus Careospina Peters, 1971
- Genus Castanophlebia Barnard, 1932
- Genus Celiphlebia Peters & Peters, 1980
- Genus Ceylonula Kluge, Vasanth, Balasubramanian & Sivaramakrishnan, 2022
- Genus Chiusanophlebia Ueno, 1969
- Genus Choroterpes Eaton, 1881
- Genus Choroterpides Ulmer, 1939
- Genus Clavineta Sinitshenkova, 1991 †
- Genus Conovirilus McCafferty, 1997 †
- Genus Coula Peters & Peters, 1980
- Genus Crephlebia Chen & Zheng, 2024 †
- Genus Cretoneta Chernova, 1971
- Genus Cryophlebia Towns & Peters, 1979
- Genus Cryptopenella Gillies, 1951 accepted as Choroterpes Eaton, 1881
- Genus Dactylophlebia Pescador & Peters, 1980
- Genus Deanophlebia Finlay, 2019
- Genus Deleatidium Eaton, 1899
- Genus Demoulinellus Pescador & Peters, 1982
- Genus Diamantina Salles, Dominguez & Nascimento in Salles et al., 2020
- Genus Dilatognathus Kluge, 2012 accepted as Choroterpes Eaton, 1881
- Genus Dipterophlebiodes Demoulin, 1954
- Genus Ecuaphlebia Dominguez, 1988
- Genus Edmundsula Sivaramakrishnan, 1985
- Genus Esbenophlebia Lestage, 1924 accepted as Adenophlebia Eaton, 1881
- Genus Euphlebia Crass, 1947 accepted as Adenophlebiodes Ulmer, 1924
- Genus Euphyurus Bengtsson, 1909
- Genus Euthraulus Barnard, 1932 accepted as Choroterpes Eaton, 1881
- Genus Farrodes Peters, 1971
- Genus Fasciamirus Peters, Peters & Edmunds, 1990
- Genus Fittkaulus Savage & Peters, 1978
- Genus Fulleta Navás, 1930
- Genus Fulletomimus Demoulin, 1956
- Genus Furvoneta Sinitshenkova, 1990 †
- Genus Garinjuga Campbell & Suter, 1988
- Genus Ghatula Kluge, Vasanth, Balasubramanian & Sivaramakrishnan, 2022
- Genus Gilliesia Peters & Edmunds, 1970
- Genus Goa Peters & Mary, 2016 accepted as Neampia Peters & Mary, 2016
- Genus Gonserellus Pescador, 1997
- Genus Guayakia Dominguez & Flowers, 1989 accepted as Hermanella Needham & Murphy, 1924
- Genus Habroleptoides Schoenemund, 1929
- Genus Habrophlebia Eaton, 1881
- Genus Habrophlebiodes Ulmer, 1920
- Genus Hagenulites Staniczek, 2003 †
- Genus Hagenulodes Ulmer, 1924
- Genus Hagenulopsis Ulmer, 1924
- Genus Hagenulus Eaton, 1882
- Genus Hapsiphlebia Peters & Edmunds, 1972
- Genus Hermanella Needham & Murphy, 1924
- Genus Hermanellopsis Demoulin, 1955
- Genus Hesperaphlebia Peters, 1979 accepted as Habrophlebia Eaton, 1881
- Genus Homothraulus Demoulin, 1955
- Genus Hubbardula Kluge, Vasanth, Balasubramanian & Sivaramakrishnan, 2022
- Genus Hyalophlebia Demoulin, 1955 accepted as Adenophlebiodes Ulmer, 1924
- Genus Hydromastodon Polegatto & Batista, 2007
- Genus Hydrosmilodon Flowers & Dominguez, 1992
- Genus Hylister Dominguez & Flowers, 1989
- Genus Indialis Peters & Edmunds, 1970
- Genus Isca Gillies, 1951
- Genus Isothraulus Towns & Peters, 1979
- Genus Jappa Harker, 1954
- Genus Kachinophlebia Chen & Zheng, 2022 †
- Genus Kalbaybaria Campbell, 1993
- Genus Kaninga Dean, 2000
- Genus Kariona Peters & Peters, 1981
- Genus Kilariodes Sartori & Derleth, 2010
- Genus Kimminsula Peters & Edmunds, 1970 †
- Genus Kirrara Harker, 1954
- Genus Koorrnonga Campbell & Suter, 1988
- Genus Kouma Peters, Peters & Edmunds, 1990
- Genus Leentvaaria Demoulin, 1966
- Genus Lepegenia Peters, Peters & Edmunds, 1978
- Genus Lepismophlebia Demoulin, 1968
- Genus Leptoneta Sinitshenkova in Sinichenkova, 1989 †
- Genus Leptophlebia Westwood, 1840
- Genus Lisetta Thomas & Dominique, 2005
- Genus Litophlebia Hubbard & Riek, 1978 †
- Genus Loamaggalangta Dean, Forteath & Osborn, 1999
- Genus Maculognathus Kluge, 2008 accepted as Simothraulopsis Demoulin, 1966
- Genus Magallanella Pescador & Peters, 1980
- Genus Magnilobus Grant & Peters, 1993
- Genus Maheathraulus Peters, Gillies & Edmunds, 1964
- Genus Mandreca Bello, 2000
- Genus Manggabora Dean & Suter, 2004
- Genus Marmenuera Dean, Forteath & Osborn, 2008
- Genus Masharikella Peters, Gillies & Edmunds, 1964 accepted as Thraulus Eaton, 1881
- Genus Massartella Lestage, 1930
- Genus Massartellopsis Demoulin, 1955
- Genus Mauiulus Towns & Peters, 1979
- Genus Megaglena Peters & Edmunds, 1970 †
- Genus Megalophlebia Pescador & Peters, 1991 accepted as Penaphlebia Peters & Edmunds, 1972
- Genus Meridialaris Peters & Edmunds, 1972
- Genus Mesoneta Brauer, Redtenbacher & Ganglbauer, 1889
- Genus Microphlebia
- Genus Minyphlebia Peters & Edmunds, 1970 † accepted as Isca Gillies, 1951
- Genus Miroculis Edmunds, 1963
- Genus Miroculitus Savage & Peters, 1983
- Genus Monochoroterpes Kluge & Jacobus, 2015 accepted as Choroterpes Eaton, 1881
- Genus Monophyllus Kluge, 2012 accepted as Choroterpes Eaton, 1881
- Genus Nathanella Demoulin, 1955
- Genus Neampia Peters & Mary, 2016
- Genus Neboissophlebia Dean, 1988
- Genus Needhamella Dominguez & Flowers, 1989
- Genus Neochoroterpes Allen, 1974
- Genus Neohagenulus Traver, 1938
- Genus Neoleptophlebia Kluge, 1997 accepted as Leptophlebia Westwood, 1840
- Genus Neozephlebia
- Genus Nesophlebia Peters & Edmunds, 1964
- Genus Ninadsa Özdikmen, 2008
- Genus Nonnullidens Grant & Peters, 1993
- Genus Notachalcus Peters & Peters, 1981
- Genus Notophlebia Peters & Edmunds, 1970
- Genus Nousia Navás, 1918
- Genus Nyungara Dean, 1987
- Genus Oligophlebia Demoulin, 1965 † accepted as Paraleptophlebia Lestage, 1917
- Genus Ommaethus Savage & Peters, 1983 accepted as Miroculis Edmunds, 1963
- Genus Oumas Peters & Peters, 2000
- Genus Ounia Peters & Peters, 1981
- Genus Papposa Peters & Peters, 1981
- Genus Paraleptophlebia Lestage, 1917
- Genus Paraluma Peters & Peters, 2000
- Genus Paramaka Savage & Dominguez, 1992
- Genus Peloracantha Peters & Peters, 1980
- Genus Penaphlebia Peters & Edmunds, 1972
- Genus Penniketellum Towns & Peters, 1979 accepted as Deleatidium Eaton, 1899
- Genus Penniketellus Towns & Peters, 1979 accepted as Deleatidium Eaton, 1899
- Genus Perissophlebia Savage, 1982 accepted as Perissophlebiodes Savage, 1983
- Genus Perissophlebiodes Savage, 1983
- Genus Petersophlebia Demoulin, 1973 †
- Genus Petersula Sivaramakrishnan, 1984
- Genus Poecilophlebia Kluge, 1993 accepted as Hagenulus Eaton, 1882
- Genus Polythelias Demoulin, 1973
- Genus Poranga Gonçalves & Da-Silva, 2012
- Genus Poya Peters & Peters, 1980
- Genus Pseudulmeritus Traver, 1959 accepted as Ulmeritus Traver, 1956
- Genus Radima Akers, Peters & Peters, 2003
- Genus Rhigotopus Pescador & Peters, 1982
- Genus Riekophlebia Christidis, 2009
- Genus Rondophlebia Salles & Boldrini, 2020
- Genus Secochela Pescador & Peters, 1982
- Genus Segesta Siegloch & Polegatto, 2006
- Genus Simothraulopsis Demoulin, 1966
- Genus Simothraulus Ulmer, 1939
- Genus Simulacala Peters, Peters & Edmunds, 1990
- Genus Siphangarus Sinitshenkova, 2000 †
- Genus Sulawesia Peters & Edmunds, 1989
- Genus Sulu Grant & Peters, 1993
- Genus Tanycola Peters & Edmunds, 1970 accepted as Isca Gillies, 1951
- Genus Tenagophila Peters, Peters & Edmunds, 1996
- Genus Tepakia Towns & Peters, 1996
- Genus Terama Towns, 1983 accepted as Zephlebia Penniket, 1961
- Genus Thraulodes Ulmer, 1920
- Genus Thraulophlebia Demoulin, 1955
- Genus Thraulus Eaton, 1881
- Genus Thuringopteryx Kuhn, 1937 †
- Genus Tikuna Savage, Flowers & Porras, 2005
- Genus Tillyardophlebia Dean, 1997
- Genus Tindea Peters & Peters, 1980
- Genus Traverella Edmunds, 1948
- Genus Traverina Peters, 1971
- Genus Turquinophlebia Kluge, 1993 accepted as Hagenulus Eaton, 1882
- Genus Ulmeritis
- Genus Ulmeritoides Traver, 1959
- Genus Ulmeritus Traver, 1956
- Genus Ulmerophlebia Demoulin, 1955
- Genus Xenophlebia Demoulin, 1968 †
- Genus Yaruma Savage & Peters, 1983 accepted as Miroculis Edmunds, 1963
- Genus Zephlebia Penniket, 1961
- Genus Zonda Dominguez, 1995 accepted as Traverella Edmunds, 1948
- Family Lithoneuridae Sroka, Staniczek & Bechly, 2015 †
- Family Litophlebiidae †
- Family Mesephemeridae Lameere, 1917 †
- Family Mesonetidae
- Family Mesoplectopteridae Demoulin, 1955 †
- Family Metretopodidae
- Family Misthodotidae Tillyard, 1932 †
- Family Neoephemeridae Traver in Needham, Traver & Hsu, 1935
- Family Nesameletidae
- Family Oboriphlebiidae Hubbard & Kukalova-Peck, 1980 †
- Family Oculephemeridae Zheng & Chen, 2024 †
- Family Oligoneuriidae Ulmer, 1914
- Family Oniscigastridae Lameere, 1917
- Family Paedephemeridae Lameere, 1917 † accepted as Hexagenitidae Lameere, 1917 †
- Family Palingeniidae Albarda in Selys-Lonchamps, 1888
- Family Palingeniopsidae Martynov, 1938 † accepted as Mesephemeridae Lameere, 1917 †
- Family Polymitarcidae accepted as Polymitarcyidae Banks, 1900
- Family Polymitarcyidae Banks, 1900
- Family Potamanthidae Albarda in Selys-Lonchamps, 1888
- Family Prosopistomatidae Lameere, 1917
- Family Prosopistomidae Lameere, 1917 accepted as Prosopistomatidae Lameere, 1917
- Family Protereismatidae Lameere, 1917 †
- Family Protereismephemeridae Sellards, 1907 † accepted as Protereismatidae Lameere, 1917 †
- Family Pseudironidae
- Family Rallidentidae
- Family Sharephemeridae Sinitshenkova, 2002 †
- Family Siphlaenigmatidae Penniket, 1962
- Family Siphlonephemerellidae Chen & Zheng, 2023 †
- Family Siphlonuridae Banks, 1900
- Family Stenodicranidae Demoulin, 1954 † accepted as Hexagenitidae Lameere, 1917 †
- Family Syntonopteridae Handlirsch, 1911 †
- Family Teloganodidae Allen, 1965 accepted as Ephemerellidae Klapálek, 1909
- Family Tintorinidae Krzeminski & Lombardo, 2001 †
- Family Torephemeridae Sinitshekova, 1989 †
- Family Toxodotidae Sinitshenkova & Papier, 2005 †
- Family Triassoephemeridae Sinitshenkova & Papier, 2005 †
- Family Triassomanthidae Sinitshenkova & Papier, 2005 †
- Family Tricorythidae Lestage, 1942
- Family Triplosobidae Handlirsch, 1906 †
- Family Vietnamellidae Allen, 1984
- Family Vogesonymphidae Sinitshenkova & Papier, 2005 †
- Family Voltziaephemeridae Sinitshenkova & Papier, 2005 †
- Order Eugeroptera †
- Order Geraroptera †
- Order Geroptera †
- Order Glosselytrodea †
- Order Grylloblattodea
- Order Hemiptera
- Order Homoptera accepted as Hemiptera
- Order Hymenoptera
- Order Hypoperlida †
- Order Insecta (awaiting allocation)
- Order Insecta incertae sedis
- Order Isoptera accepted as Blattodea
- Order Kukaloptera †
- Order Lepidoptera
- Order Lophioneurida †
- Order Mallophaga
- Order Mantodea
- Order Mantophasmatodea
- Order Mecoptera
- Order Mecopterida incertae sedis
- Order Megaloptera
- Order Megasecoptera †
- Order Miomoptera †
- Order Neoptera incertae sedis
- Order Neuroptera
- Order Neuropteroidea incertae sedis †
- Order Notoptera
- Order Odonata
- Order Odonatoptera (awaiting allocation) †
- Order Odonatoptera incertae sedis
- Order Orthoptera
- Order Orthopterida incertae sedis
- Order Palaeodictyoptera †
- Order Palaeoptera incertae sedis
- Order Panorthoptera incertae sedis
- Order Paoliida †
- Order Paraneoptera (awaiting allocation)
- Order Perielytrodea †
- Order Permopsocida †
- Order Permotrichoptera †
- Order Phasmatodea
- Order Phasmida accepted as Phasmatodea
- Order Phasmoptera accepted as Phasmatodea
- Order Phthiraptera
- Order Plecoptera
- Order Polyneoptera incertae sedis
- Order Protelytroptera †
- Order Protoblattoidea †
- Order Protocoleoptera † accepted as Protelytroptera †
- Order Protodonata †
- Order Protoelytroptera †
- Order Protohemiptera †
- Order Protohymenoptera †
- Order Protorthoptera †
- Order Protozygoptera †
- Order Psocoptera
- Order Raphidioptera
- Order Siphonaptera
- Order Skleroptera †
- Order Strepsiptera
- Order Tarachoptera †
- Order Thripida incertae sedis
- Order Thysanoptera
- Order Thysanura accepted as Insecta
- Order Titanoptera †
- Order Trichoptera
- Order Zoraptera
- Order Zygentoma
- Genus Bifarius Tasch, 1961 †
- Genus Cyclocephalus Tasch, 1961 †
- Genus Hypatocephala Tasch, 1961 †
- Genus Permolimulinella Tasch, 1963 †
- Genus Strongylocephalus Tasch, 1961 †
- Class Protura
- 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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