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
- Phylum Brachiopoda
- Phylum Bryozoa
- Phylum Cephalorhyncha incertae sedis
- Phylum Chaetognatha
- Phylum Chitinozoa †
- Phylum Chordata
- Subphylum Cephalochordata
- Subphylum Tunicata accepted as Urochordata
- Subphylum Urochordata
- Subphylum Vertebrata
- Superclass Tetrapoda
- Class Amphibia
- Class Aves
- Order Accipitriformes
- Order Aepyornithiformes †
- Order Alexornithiformes †
- Order Ambiortiformes †
- Order Anseriformes
- Order Apodiformes
- Order Apterygiformes
- Order Archaeopterygiformes †
- Order Ardeiformes
- Order Aves (awaiting allocation)
- Order Aves incertae sedis †
- Order Bucerotiformes
- Order Caprimulgiformes
- Order Cariamiformes
- Order Carinatae (awaiting allocation)
- Order Casuariiformes
- Order Cathartiformes
- Order Cathayornithiformes †
- Order Chaoyangiformes †
- Order Charadriiformes
- Order Charadriimorphae incertae sedis
- Order Ciconiiformes
- Order Coliiformes
- Order Columbiformes
- Order Columbiiformes accepted as Columbiformes
- Order Colymbiformes accepted as Podicipediformes
- Order Confuciusornithiformes †
- Order Coraciiformes
- Order Cuculiformes
- Order Cypselomorphae incertae sedis
- Order Diatrymiformes †
- Order Dinornithiformes †
- Order Enantiornithes incertae sedis †
- Order Enantiornithiformes †
- Order Eoenantiornithiformes †
- Order Euenantiornithes incertae sedis †
- Order Falconiformes
- Order Galliformes
- Order Gansuiformes †
- Order Gastornithiformes †
- Order Gaviiformes
- Order Gobipterygiformes †
- Order Gruiformes
- Order Hesperornithiformes †
- Order Iberomesornithiformes †
- Order Ichthyornithiformes †
- Order Jeholornithiformes †
- Order Liaoningornithiformes †
- Order Limnornithiformes †
- Order Lithornithiformes †
- Order Longipterygiformes †
- Order Mystiornithiformes †
- Order Neognathae incertae sedis
- Order Omnivoropterygiformes †
- Order Opisthocomiformes
- Order Ornithothoraces incertae sedis
- Order Ornithuromorpha incertae sedis †
- Order Palaeocursornithiformes †
- Order Palaeognathae (awaiting allocation)
- Order Pangalliformes incertae sedis
- Order Panpsittaciformes incertae sedis
- Order Passeriformes
- Family Acanthisittidae Sundevall, 1872
- Family Acanthizidae Bonaparte, 1854
- Family Aegithalidae
- Family Alaudidae Vigors, 1825
- Family Alcippeidae Cai et al., 2019
- Family Artamidae
- Family Atrichornithidae Stejneger, 1855
- Family Bombycillidae Swainson, 1831
- Family Callaeatidae Gray, 1841
- Family Callaeidae
- Family Campephagidae
- Family Cardinalidae
- Family Catamblyrhynchidae
- Family Certhiidae
- Family Certhioidea incertae sedis
- Family Chaetopidae Fjeldså, Ericson, Johansson & Zuccon, 2015
- Family Cinclidae Cabanis, 1847
- Family Cisticolidae
- Family Climacteridae
- Family Coerebidae Gray, 1840
- Family Colluricinclidae
- Family Compsothlypidae
- Family Conopophagidae
- Family Corcoracidae
- Family Corvidae Vigors, 1825
- Family Cotingidae
- Family Cracticidae
- Family Dendrocolaptidae
- Family Dicaeidae
- Family Dicruridae Vigors, 1825
- Family Drepanididae accepted as Fringillidae Vigors, 1825
- Family Dulidae ScIater, 1862
- Family Emberizidae Vigors, 1831
- Family Ephthianuridae
- Family Estrildidae
- Family Eupetidae
- Family Eurylaimidae Swainson, 1837
- Family Formicariidae
- Family Fringillidae Vigors, 1825
- Family Furnariidae Gray, 1840
- Family Grallinidae
- Family Hirundinidae Vigors, 1825
- Family Hyliotidae Fjeldså, 2014
- Family Hylocitreidae Fjeldså, Ericson, Johansson & Zuccon, 2015
- Family Hypocolidae
- Family Hypocoliidae
- Family Icteridae Vigors, 1825
- Family Irenidae
- Family Laniidae Swainson, 1824
- Family Locustellidae Bonaparte, 1854
- Family Malaconotidae
- Family Maluridae
- Family Megaluridae Blyth, 1875 accepted as Locustellidae Bonaparte, 1854
- Family Melampittidae Schodde & Christidis, 2014
- Family Melanocharitidae
- Family Meliphagidae Vigors, 1825
- Family Menuridae Gray, 1847
- Family Mimidae
- Family Mniotillidae accepted as Parulidae
- Family Modulatricidae Fjeldså, Ericson, Johansson & Zuccon, 2015
- Family Monarchidae
- Family Motacillidae Vigors, 1825
- Family Muscicapidae Fleming, 1822
- Family Musicapidae Vigors, 1825 accepted as Muscicapidae Fleming, 1822
- Family Nectariniidae Vigors, 1825
- Family Neosittidae
- Family Nicatoridae Cracraft, Beresford & Barker, 2014
- Family Oriolidae Vigors, 1825
- Family Orthonychidae
- Family Oxyrunchidae
- Family Oxyruncidae
- Family Pachycephalidae
- Family Palaeoscinidae Howard, 1957 †
- Family Palaeospizidae Wetmore, 1925 †
- Family Paradisaeidae
- Family Paramythiidae
- Family Pardalotidae
- Family Paridae Vigors, 1825
- Family Parulidae
- Family Passerellidae Cabanis & Heine, 1850-51
- Family Passeres (awaiting allocation)
- Family Passeridae Illiger, 1811
- Genus Aedemosyne Reichenbach, 1862 accepted as Neochmia Gray, 1849
- Genus Aegintha Cabanis in Cabanis & Heine, 1851 accepted as Neochmia Gray, 1849
- Genus Aethiops Strickland, 1841 accepted as Nigrita Fraser, 1842
- Genus Aidemosyne Reichenbach, 1862 accepted as Neochmia Gray, 1849
- Genus Amadina Swainson, 1827
- Genus Amandava Blyth in White, 1836
- Genus Amblyospitza Sundevall, 1850
- Genus Amblyospiza Shelley, 1881
- Genus Anaplectes Reichenbach, 1863
- Genus Anomalospiza Shelley, 1901
- Genus Auripasser Bonaparte, 1850 accepted as Passer Brisson, 1760
- Genus Bathilda Reichenbach, 1862 accepted as Neochmia Gray, 1849
- Genus Bichenoa Moulton, 1923 accepted as Taeniopygia Reichenbach, 1862
- Genus Brachycope Reichenow, 1900
- Genus Bubalornis Smith, 1836
- Genus Caleyna Iredale, 1930
- Genus Carpospiza Müller, 1854
- Genus Cayleyna Iredale, 1930 accepted as Emblema Gould, 1842
- Genus Chloebia Reichenbach, 1862
- Genus Chloëbia Reichenbach, 1862 accepted as Chloebia Reichenbach, 1862
- Genus Clytospiza Shelley, 1896
- Genus Coliipasser Agassiz, 1846 accepted as Euplectes Swainson, 1829
- Genus Coliupasser Finsch, 1870 accepted as Euplectes Swainson, 1829
- Genus Coliuspasser Rüppell, 1840 accepted as Euplectes Swainson, 1829
- Genus Cryptospiza Salvadori, 1884
- Genus Dendranthus Agassiz, 1846 accepted as Dendronanthus Blyth, 1844
- Genus Dendronanthus Blyth, 1844
- Genus Dinemellia Reichenbach, 1863
- Genus Emblema Gould, 1842
- Genus Erythrura Swainson, 1837
- Genus Erythura Swainson, 1837 accepted as Erythrura Swainson, 1837
- Genus Estrelda Swainson, 1836 accepted as Estrilda Swainson, 1827
- Genus Estrilda Swainson, 1827
- Genus Euodice Reichenbach, 1862 accepted as Lonchura Sykes, 1832
- Genus Euplectes Swainson, 1829
- Genus Euplectus Heuglin, 1862 accepted as Euplectes Swainson, 1829
- Genus Euschistopiza Wolters, 1943 accepted as Euschistospiza Wolters, 1943
- Genus Euschistospiza Wolters, 1943
- Genus Foudia Reichenbach, 1850
- Genus Fudia Schlegel, 1857 accepted as Foudia Reichenbach, 1850
- Genus Gymnorhis Agassiz, 1845
- Genus Gymnoris Blyth, 1845
- Genus Gymnoris Hodgson, 1844
- Genus Habropyga Cabanis, 1847 accepted as Estrilda Swainson, 1827
- Genus Hemimacronyx Roberts, 1922 accepted as Anthus Bechstein, 1805
- Genus Heteromunia Mathews, 1913
- Genus Histurgops Reichenow, 1887
- Genus Hypargos Reichenbach, 1862
- Genus Hypargus Shelley, 1881 accepted as Hypargos Reichenbach, 1862
- Genus Hyperanthus Gistl, 1848 accepted as Euplectes Swainson, 1829
- Genus Hyphanthurgus Sundevall, 1872 accepted as Ploceus Cuvier, 1817
- Genus Hyphantica Cabanis in Cabanis & Heine, 1851 accepted as Quelea Reichenbach, 1850
- Genus Hyphanturgus Cabanis in Cabanis & Heine, 1851 accepted as Ploceus Cuvier, 1817
- Genus Hypochaera Sundevall, 1872 accepted as Vidua Cuvier, 1800
- Genus Hypochera Bonaparte, 1850 accepted as Vidua Cuvier, 1800
- Genus Lagonosticta Cabanis in Cabanis & Heine, 1851
- Genus Lemaresthes Wolters, 1949 accepted as Lemuresthes Wolters, 1949
- Genus Lemuresthes Wolters, 1949
- Genus Lepidopygia Reichenbach, 1862 accepted as Lemuresthes Wolters, 1949
- Genus Lonchura Sykes, 1832
- Genus Macronix Bonaparte, 1831 accepted as Macronyx Swainson, 1827
- Genus Macronyx Swainson, 1827
- Genus Malimbus Vieillot, post 1807
- Genus Mandingoa Hartert, 1919
- Genus Metacilla Gmelin, 1774 accepted as Motacilla Linnaeus, 1758
- Genus Montifringilla Brehm, 1831
- Genus Montifringilla Brehm, 1828 accepted as Montifringilla Brehm, 1831
- Genus Mottacilla Gmelin, 1774 accepted as Motacilla Linnaeus, 1758
- Genus Nelicurvius Bonaparte, 1850 accepted as Ploceus Cuvier, 1817
- Genus Nelicurvus Pollen, 1863 accepted as Ploceus Cuvier, 1817
- Genus Neochmia Gray, 1849
- Genus Nesocharis Alexander, 1903
- Genus Nigrita Fraser, 1842
- Genus Notiospiza Oberholser, 1905 accepted as Ploceus Cuvier, 1817
- Genus Odontospiza Oberholser, 1905 accepted as Lonchura Sykes, 1832
- Genus Oreospiza De Vis, 1897 accepted as Oreostruthus De Vis, 1898
- Genus Oreostruthus De Vis, 1898
- Genus Ortygospiza Sundevall, 1850
- Genus Oryzornis Cabanis in Cabanis & Heine, 1851 accepted as Padda Reichenbach, 1850
- Genus Othyphantes Shelley, 1896 accepted as Ploceus Cuvier, 1817
- Genus Otygospiza Bonaparte, 1850 accepted as Ortygospiza Sundevall, 1850
- Genus Pachyphantes Shelley, 1896
- Genus Padda Reichenbach, 1850
- Genus Parmoptila Cassin, 1859
- Species Parmoptila rubrifrons (Sharpe & Ussher, 1872)
- Species Parmoptila woodhousei Cassin, 1859
- Genus Passer Brisson, 1760
- Genus Petronia Kaup, 1829
- Genus Philacterus Fitzinger, 1856 accepted as Philetairus Smith, 1837
- Genus Philaeterus Bonaparte, 1850 accepted as Philetairus Smith, 1837
- Genus Philagrus Cabanis in Cabanis & Heine, 1851 accepted as Plocepasser Smith, 1836
- Genus Philetaerus Agassiz, 1846 accepted as Philetairus Smith, 1837
- Genus Philetairus Smith, 1837
- Genus Philetarius accepted as Philetairus Smith, 1837
- Genus Philhetaerus Newton, 1896 accepted as Philetairus Smith, 1837
- Genus Philoetaerus Sharpe in Layard, 1882 accepted as Philetairus Smith, 1837
- Genus Phormoplectes Reichenow, 1903 accepted as Ploceus Cuvier, 1817
- Genus Pirenestes Swainson, 1837 accepted as Pyrenestes Swainson, 1837
- Genus Pitelia Sousa, 1887 accepted as Pytilia Swainson, 1837
- Genus Pitylia Cabanis, 1878 accepted as Pytilia Swainson, 1837
- Genus Ploceella Oates in Hume, 1874 accepted as Ploceus Cuvier, 1817
- Genus Ploceëlla Oates in Hume, 1874 accepted as Ploceus Cuvier, 1817
- Genus Ploceopasser Reichenbach, 1852 accepted as Plocepasser Smith, 1836
- Genus Plocepasser Smith, 1836
- Genus Ploceuspasser Rüppell, 1835 accepted as Plocepasser Smith, 1836
- Genus Ploceys Billberg, 1828 accepted as Ploceus Cuvier, 1817
- Genus Plocion Merrem in Ersch & Gruber, 1826 accepted as Ploceus Cuvier, 1817
- Genus Plocus Lafresnaye, 1835 accepted as Ploceus Cuvier, 1817
- Genus Poephila Gould, 1842
- Genus Prunella Vieillot, 1816
- Genus Pseudonigrita Reichenow, 1903
- Genus Pyreneites Bonaparte, 1856 accepted as Pyrenestes Swainson, 1837
- Genus Pyrenestes Swainson, 1837
- Genus Pyrgilauda Verreaux, 1870
- Genus Pytelia Swainson, 1837 accepted as Pytilia Swainson, 1837
- Genus Pytilia Swainson, 1837
- Genus Quelea Reichenbach, 1850
- Genus Queleopsis Boetticher, 1951 accepted as Quelea Reichenbach, 1850
- Genus Sharpia Barboza de Bocage, 1878 accepted as Ploceus Cuvier, 1817
- Genus Simplectes Lesson, 1844 accepted as Ploceus Cuvier, 1817
- Genus Sitagra Reichenbach, 1850 accepted as Ploceus Cuvier, 1817
- Genus Sitagroides Roberts, 1947 accepted as Ploceus Cuvier, 1817
- Genus Sorella Hartlaub, 1880 accepted as Passer Brisson, 1760
- Genus Spermastes Fitzinger, 1856 accepted as Lonchura Sykes, 1832
- Genus Spermestes Swainson, 1837 accepted as Lonchura Sykes, 1832
- Genus Spermophaga Jardine & Selby, 1836
- Genus Sporopipes Cabanis, 1847
- Genus Staganopleura accepted as Stagonopleura Reichenbach, 1850
- Genus Stagonopleura Reichenbach, 1850
- Genus Steganura Reichenbach, 1850 accepted as Vidua Cuvier, 1800
- Genus Stepaniania Kashin, 1982
- Genus Stictoptera Reichenbach, 1862 accepted as Taeniopygia Reichenbach, 1862
- Genus Stizoptera Oberholser, 1899 accepted as Taeniopygia Reichenbach, 1862
- Genus Sycobrotus Cabanis in Cabanis & Heine, 1851 accepted as Ploceus Cuvier, 1817
- Genus Symplectes Swainson, 1837 accepted as Ploceus Cuvier, 1817
- Genus Taeniopygia Reichenbach, 1862
- Genus Taha Reichenbach, 1863 accepted as Euplectes Swainson, 1829
- Genus Tetraenura Reichenbach, 1850 accepted as Vidua Cuvier, 1800
- Genus Tetraeonura Giebel, 1877 accepted as Vidua Cuvier, 1800
- Genus Tetroenura Bonaparte, 1854 accepted as Vidua Cuvier, 1800
- Genus Textor Temminck in Temminck & Laugier, 1827 accepted as Ploceus Cuvier, 1817
- Genus Thomasophantes Sclater, 1925 accepted as Ploceus Cuvier, 1817
- Genus Tmetothylacus Cabanis, 1879
- Genus Uroloncha Cabanis, 1851
- Genus Vidua Cuvier, 1800
- Family Passeriformes (awaiting allocation)
- Family Passeriformes incertae sedis
- Family Petroicidae
- Family Philepittidae
- Family Phytotomidae
- Family Picathartidae
- Family Pipridae Rafinesque, 1815
- Family Pittidae Swainson, 1831
- Family Pityriaseidae Mayr & Amadon, 1951
- Family Pityriasididae
- Family Platysteiridae
- Family Ploceidae
- Family Pomatostomidae
- Family Primoscenidae Harrison & Walker, 1977 † accepted as Zygodactylidae Brodkorb, 1971 †
- Family Prionopidae
- Family Prunellidae Richmond, 1908
- Family Ptilonorhynchidae Gray, 1846
- Family Pycnonotidae Gray, 1840
- Family Regulidae
- Family Rhinocryptidae
- Family Rhipiduridae
- Family Saxicolidae
- Family Scytalopodidae Müller, 1846
- Family Sittidae Lesson, 1828
- Family Sturnidae Vigors, 1825
- Family Sylviidae Vigors, 1825
- Family Tanagridae Vigors, 1825 accepted as Thraupidae
- Family Tersinidae
- Family Thamnophilidae Vigors, 1825
- Family Thraupidae
- Family Timaliidae Delacour, 1946
- Family Troglodytidae Swainson, 1832
- Family Turdidae
- Family Tyrannidae Vigors, 1825
- Family Vangidae
- Family Vireonidae Swainson, 1837
- Family Xenicidae
- Family Zeledoniidae
- Family Zosteropidae Bonaparte, 1853
- Family Zygodactylidae Brodkorb, 1971 †
- Order Patagopteryformes †
- Order Pelecaniformes
- Order Phaethontiformes
- Order Phoenicopteriformes
- Order Piciformes
- Order Podicipediformes
- Order Praeornithiformes †
- Order Procellariiformes
- Order Psittaciformes
- Order Pygostylia incertae sedis †
- Order Remiornithiformes †
- Order Rheiformes
- Order Sandcoleiformes †
- Order Sphenisciformes
- Order Stereornithes †
- Order Strigiformes
- Order Struthioniformes
- Order Suliformes
- Order Tinamiformes
- Order Trogoniformes
- Order Upupiformes
- Order Vegaviiformes †
- Order Yandangithformes †
- Order Yanornithiformes †
- Family Gobioolithidae Mikhailov, 1996 †
- Family Medioolithidae Kohring & Hirsch, 1996 †
- Family Morsoravidae Mayr, 2023 †
- Family Ornitholithidae Dughi & Sirugue, 1962 †
- Family Xenaviculidae Mayr & Kitchener, 2024 †
- Family Zealandornithidae Worthy, Scofield, Salisbury, Hand, De Pietri & Archer, 2022 †
- Genus Janavis Benito, Kuo, Widrig, Jagt & Field, 2022 †
- Genus Lumbrerornis Bertelli et al., 2024 †
- Genus Lutavis Mayr & Kitchener, 2022 †
- Genus Oculudentavis Xing, O'Connor, Schmitz, Chiappe, McKellar, Yi & Li, 2020 †
- Genus Parvoolithus Mikhailov, 1996 †
- Genus Plagioolithus Imai & Azuma, 2015 †
- Genus Struthiolithus Brandt, 1872 †
- Genus Styloolithus Varricchio & Barta, 2014 †
- Genus Sulcitarsus Mayr & Kitchener, 2024 †
- Genus Tristratioolithus Bravo, Sevilla & Barroso-Barcenilla, 2018 †
- Genus Waltonavis Mayr & Kitchener, 2022 †
- Class Mammalia
- Class Mammaliaformes incertae sedis †
- Class Reptilia
- Genus Archaeoraptor Sloan, 1999 †
- Genus Brittagnathus Ahlberg & Clack, 2020 †
- Genus Diploradus Clack & Smithson in Clack et al., 2017 †
- Genus Mesanerpeton Smithson & Clack, 2018 †
- Genus Ossirarus Clack & Smithson in Clack et al., 2017 †
- Genus Parmastega Beznosov, Clack, Lukševičs, Ruta & Ahlberg, 2019 †
- Genus Perittodus Clack & Smithson in Clack et al., 2017 †
- Genus Sigournea Bolt & Lombard, 2006 †
- Genus Tantallognathus Chen, Alavi, Brazeau, Blom, Millward & Ahlberg, 2017 †
- Genus Tutusius Gess & Ahlberg, 2018 †
- Genus Umzantsia Gess & Ahlberg, 2018 †
- Class Acanthodii †
- Class Actinopterygii
- Class Agnatha (awaiting allocation)
- Class Cephalaspidomorphi
- Class Chondrichthyes
- Class Conodonta †
- Class Dipnoi
- Class Dipnomorpha accepted as Dipnoi
- Class Galeaspida †
- Class Gnathostomata incertae sedis †
- Class Myxini
- Class Osteichthyes (awaiting allocation)
- Class Osteichthyes incertae sedis †
- Class Ostracodermi †
- Class Pisces (awaiting allocation)
- Class Placodermi †
- Class Pteraspidomorphi †
- Class Sarcopterygii
- Class Thelodonti †
- Genus Emmonsaspis Resser & Howell, 1938 †
- Genus Harajicadectes Choo, Holland, Clement, King, Challands, Young & Long, 2024 †
- Genus Kahamachli Malkani, 2019 †
- Genus Nuucichthys Lerosey-Aubril & Ortega-Hernández, 2024 †
- Genus Rhynchocopros Hunt, Lucas & Spielmann, 2013 †
- Genus Santamariacopros Hunt, Lucas & Spielmann, 2013 †
- Genus Squirmarius McCoy, Wittry, Sadabadi & Mayer, 2023 †
- Class Chordata (awaiting allocation)
- Class Eotetrapodiformes incertae sedis
- 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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