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
- Family Anajapygidae Bagnall, 1918
- Family Campodeidae Meinert, 1865
- Family Dinjapygidae Womersley, 1939
- Family Diplura incertae sedis †
- Family Evalljapygidae Silvestri, 1948 accepted as Japygidae Haliday, 1864
- Family Heterojapygidae Womersley, 1939
- Family Iapygidae Haliday, 1864 accepted as Japygidae Haliday, 1864
- Family Japygidae Haliday, 1864
- Genus Abjapyx Silvestri, 1948
- Genus Afrojapyx Silvestri, 1948
- Genus Allojapyx Silvestri, 1948
- Genus Allurjapyx Silvestri, 1929
- Genus Atlasjapyx Chou & Huang, 1986
- Genus Austrapyx Smith & Gonzalez, 1964 accepted as Austrjapyx Silvestri, 1948
- Genus Austrjapyx Silvestri, 1948
- Genus Burmajapyx accepted as Burmjapyx Silvestri, 1930
- Genus Burmjapyx Silvestri, 1930
- Genus Catajapyx Silvestri, 1932
- Genus Centrjapyx Silvestri, 1948
- Genus Chiljapyx Smith, 1962
- Genus Choujapyx Huang, 2001
- Genus Congjapyx Pagés, 1954
- Genus Cretojapyx Wang, Huang & Cai, 2023 †
- Genus Ctenjapyx Silvestri, 1948
- Genus Deutojapyx Paclt, 1957
- Genus Dicellura Haliday, 1865 accepted as Japyx Haliday, 1864
- Genus Dipljapyx Silvestri, 1948
- Genus Eojapyx Smith, 1960
- Genus Epijapyx Silvestri, 1932
- Genus Evalljapyx Silvestri, 1910
- Genus Gallojapyx Pagés, 1993
- Genus Gigasjapyx Chou, 1984
- Genus Gollumjapyx Sendra & Ortuño, 2006
- Genus Hainanjapyx Chou in Chou & Chen, 1983
- Genus Hapljapyx Silvestri, 1948
- Genus Hecajapyx Smith, 1959
- Genus Henicjapyx Silvestri, 1948
- Genus Holjapyx Silvestri, 1948
- Genus Homojapyx Pagés, 1953 accepted as Megajapyx Verhoeff, 1904
- Genus Hutanjapyx Pagés, 1995
- Species Hutanjapyx simpan Pagés, 1995
- Genus Iapyx Haliday, 1864 accepted as Japyx Haliday, 1864
- Genus Indjapyx Silvestri, 1930
- Genus Isojapyx Silvestri, 1948
- Genus Jajyx Condé & Pagés, 1950 accepted as Japyx Haliday, 1864
- Genus Japigio
- Genus Japix Kosaroff, 1935 accepted as Japyx Haliday, 1864
- Genus Japixe Kosaroff, 1935 accepted as Japyx Haliday, 1864
- Genus Japygellus Silvestri in Beier, 1929
- Genus Japygianus Silvestri, 1948
- Genus Japyginus Silvestri in Beier, 1929
- Genus Japyx Haliday, 1864
- Genus Japyx Meinert, 1865 accepted as Japyx Haliday, 1864
- Genus Japyxe Kosaroff, 1935 accepted as Japyx Haliday, 1864
- Genus Japyxen Kosaroff, 1935 accepted as Japyx Haliday, 1864
- Genus Kinabalujapyx Pagés, 1994
- Genus Kohjapyx Pagés, 1953
- Genus Megajapyx Verhoeff, 1904
- Genus Megajapyx Kratochvíl, 1946 accepted as Megajapyx Verhoeff, 1904
- Genus Merojapyx Silvestri, 1948
- Genus Mesjapyx Silvestri, 1948
- Genus Metajapyx Silvestri, 1932
- Genus Mixojapyx Silvestri, 1933
- Genus Monojapyx Paclt, 1957
- Genus Mueggejapyx Sendra & Komerički, 2021
- Genus Myxojapyx Silvestri, 1949 accepted as Mixojapyx Silvestri, 1933
- Genus Nanojapyx Smith, 1959
- Genus Nelsjapyx Smith, 1962
- Genus Neojapyx Silvestri, 1933
- Genus Notojapyx Paclt, 1957
- Genus Occasjapyx Silvestri, 1948
- Genus Oncojapyx Silvestri, 1948
- Genus Opisthjapyx Silvestri, 1929
- Genus Parindjapyx Silvestri, 1932
- Genus Parindjapyx Kratochvíl, 1946 accepted as Parindjapyx Silvestri, 1932
- Genus Paucijapyx Pagés, 1995 accepted as Pauperojapyx Pagés, 1995
- Genus Pauperojapyx Pagés, 1995
- Genus Penjapyx Smith, 1962
- Genus Polyjapyx Silvestri, 1948
- Genus Proncojapyx Silvestri, 1948
- Genus Proncojapyx Condé & Pagés, 1950 accepted as Proncojapyx Silvestri, 1948
- Genus Protjapyx Silvestri, 1948
- Genus Provalljapyx Silvestri, 1948
- Genus Psalidojapyx Pagés, 2000
- Genus Rectojapyx Pagés, 1954
- Genus Rossjapyx Smith, 1962
- Genus Scottjapyx Pagés, 1957
- Genus Scottojapyx Pagés, 1957
- Genus Shaanxijapyx Chou in Chou & Chen, 1983
- Genus Silvestriapyx Pagés, 1981
- Genus Sinjapyx Silvestri, 1948
- Genus Teljapyx Silvestri, 1948 accepted as Typhlolabia Scudder, 1876
- Genus Troglojapyx Pagés, 1980
- Genus Typhlolabia Scudder, 1876
- Genus Ultrajapyx Paclt, 1957
- Genus Unjapyx Silvestri, 1948
- Genus Urojapyx Pagés, 1955
- Genus Valpjapyx Smith, 1962 accepted as Typhlolabia Scudder, 1876
- Genus Xenjapyx Silvestri, 1948
- Family Japygoidea incertae sedis †
- Family Octostigmatidae Rusek, 1982
- Family Parajapygidae Womersley, 1939
- Family Procampodeidae Silvestri, 1948
- Family Projapygidae Cook, 1896
- Family Testajapygidae Kukalova-Peck, 1987 †
- Class Entognatha accepted as Hexapoda
- Class Insecta
- 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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