Between brackets is the number of accepted species
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2 Shows the number of accepted species within the taxon
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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
- 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
- Family Austroperlidae Tillyard, 1921
- Family Baleyopterigidae † accepted as Baleyopterygidae N.D. Sinichenkova, 1985 †
- Family Baleyopterygidae N.D. Sinichenkova, 1985 †
- Family Capniidae Klapálek, 1905
- Family Cavoperlidae Chen, 2023 †
- Family Chloroperlidae Okamoto, 1912
- Genus Alaskaperla Stewart & DeWalt in Stewart, DeWalt & Oswood, 1991
- Genus Alloperla Banks, 1906
- Genus Bestioperlisca Sinitshenkova, 1990 †
- Genus Bisancora Surdick, 1981
- Genus Biscancora
- Genus Chloroperla Newman, 1836
- Genus Dipsoperla Sinitshenkova, 1987 †
- Genus Dodecatoma Dutour, 1841 accepted as Chloroperla Newman, 1836
- Genus Gaufinia Stark & Baumann, 2021
- Genus Haploperla Navás, 1934
- Genus Hastaperla Ricker, 1935 accepted as Haploperla Navás, 1934
- Genus Isoptena Enderlein, 1909
- Genus Isopteryx Pictet, 1841 accepted as Chloroperla Newman, 1836
- Genus Leptomerces Rambur, 1842 accepted as Chloroperla Newman, 1836
- Genus Leptomeres Rambur, 1842
- Genus Neaviperla Ricker, 1943 accepted as Suwallia Ricker, 1943
- Genus Paraperla Banks, 1906
- Genus Plesioperla Zwick, 1967 †
- Genus Plumiperla Surdick, 1985
- Genus Pontoperla Zwick, 1967
- Genus Rasvena Ricker, 1952
- Genus Sasquaperla Stark & Baumann, 2001
- Genus Siphonoperla Zwick, 1967
- Genus Suwallia Ricker, 1943
- Genus Sweltsa Ricker, 1943
- Species Sweltsa abdominalis (Okamoto, 1912)
- Species Sweltsa adamantea Surdick, 1995
- Species Sweltsa albertensis (Needham & Claassen, 1925)
- Species Sweltsa assam Zwick, 1971
- Species Sweltsa borealis (Banks, 1895)
- Species Sweltsa californica (Jewett, 1965)
- Species Sweltsa coloradensis (Banks, 1898)
- Species Sweltsa colorata (Zhiltzova & Levanidova, 1978) accepted as Ostrovus nikkoensis (Okamoto, 1912)
- Species Sweltsa continua (Banks, 1911)
- Species Sweltsa cristata Surdick, 1995
- Species Sweltsa exquisita (Frison, 1935)
- Species Sweltsa fidelis (Banks, 1920)
- Species Sweltsa gaufini Baumann, 1973
- Species Sweltsa holstonensis Kondratieff & Kirchner, 1998
- Species Sweltsa hondo Baumann & Jacobi, 1984
- Species Sweltsa kibunensis (Kawai, 1967)
- Species Sweltsa lamba (Needham & Claassen, 1925)
- Species Sweltsa lateralis (Banks, 1911)
- Species Sweltsa longistyla (Wu, 1938)
- Species Sweltsa mediana (Banks, 1911)
- Species Sweltsa naica (Provancher, 1876)
- Species Sweltsa nanina (Banks, 1911) accepted as Alloperla nanina Banks, 1911
- Species Sweltsa nikkoensis (Okamoto, 1912)
- Species Sweltsa occidens (Frison, 1937)
- Species Sweltsa onkos (Ricker, 1935)
- Species Sweltsa oregonenesis (Frison, 1935)
- Species Sweltsa oregonensis (Frison, 1935)
- Species Sweltsa pacifica (Banks, 1895)
- Species Sweltsa palearata Surdick, 2004
- Species Sweltsa pisteri Baumann & Bottorff, 1997
- Species Sweltsa pocahontas Kirchner & Kondratieff, 1988
- Species Sweltsa recurvata (Wu, 1938)
- Species Sweltsa resima Surdick, 1995
- Species Sweltsa revelstoka (Jewett, 1955)
- Species Sweltsa revelstoki (Illies, 1966) accepted as Sweltsa revelstoka (Jewett, 1955)
- Species Sweltsa shibakawae (Okamoto, 1912)
- Species Sweltsa spatulata (Needham & Claassen, 1925) accepted as Sweltsa pacifica (Banks, 1895)
- Species Sweltsa tamalpa (Ricker, 1952)
- Species Sweltsa townesi (Ricker, 1952)
- Species Sweltsa townsi (Illies, 1966) accepted as Sweltsa townesi (Ricker, 1952)
- Species Sweltsa umbonata Surdick, 1995
- Species Sweltsa urticae (Ricker, 1952)
- Species Sweltsa voshelli Kondratieff & Kirchner, 1991
- Species Sweltsa yunnan Tierno de Figueroa & Fochetti, 2002
- Genus Triznaka Ricker, 1952
- Genus Utaperla Ricker, 1952
- Genus Xanthoperla Zwick, 1967
- Family Crossoperlidae Chen, 2024 †
- Family Diamphipnoidae Ricker, 1950
- Family Eustheniidae Tillyard, 1921
- Family Euxenoperlidae Riek, 1976 †
- Family Gripopterygidae Enderlein, 1909
- Family Gulouidae Béthoux, Cui, Kondratieff, Stark & Ren, 2011 †
- Family Kachinoperlidae Chen, 2022 †
- Family Kathroperlidae South & DeWalt, 2021
- Family Leuctridae Klapálek, 1905-
- Family Mesoleuctridae Sinitshenkova, 1982 †
- Family Nemouridae Newman, 1853
- Family Nemuridae Klapálek, 1905 accepted as Nemouridae Newman, 1853
- Family Notonemouridae Ricker, 1950
- Family Osmylitidae †
- Family Palaeonemouridae N.D. Sinichenkova, 1987 †
- Family Palaeoperlidae Sharov, 1961 †
- Family Peltoperlidae Claassen, 1931
- Family Penturoperlidae Illies, 1960 accepted as Austroperlidae Tillyard, 1921
- Family Perlapsocidae Iraja Pinto & Pineiro in Iraja Pinto, Pineiro & Verde, 2000 †
- Family Perlariopseidae Sinichenkova, 1985 †
- Family Perlidae Latreille, 1802
- Family Perlodidae Klapálek, 1912
- Family Perlomorpha incertae sedis
- Family Perlopseidae Martynov, 1940 †
- Family Perspicuusoperlidae Chen, 2022 †
- Family Petroperlidae Sroka, Staniczek & Kondratieff, 2018 †
- Family Platyperlidae Sinitshenkova, 1982 †
- Family Plecoptera (awaiting allocation)
- Family Plecoptera incertae sedis †
- Family Protoperlaria (awaiting allocation) †
- Family Pteronarcidae accepted as Pteronarcyidae Enderlein, 1909
- Family Pteronarcyidae Enderlein, 1909
- Family Scopuridae Uéno, 1935
- Family Siberioperlidae Sinitshenkova, 1983 †
- Family Styloperlidae Illies, 1966
- Family Subulipalpia incertae sedis †
- Family Taeniopterygidae Klapálek, 1905
- Family Tshekardoperlidae N.D. Sinichenkova, 1987 †
- 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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