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
- Order Patagopteryformes †
- Order Pelecaniformes
- Order Phaethontiformes
- Order Phoenicopteriformes
- Order Piciformes
- Order Podicipediformes
- Order Praeornithiformes †
- Order Procellariiformes
- Order Psittaciformes
- Family Cacatuidae Gray, 1840
- Family Loriidae
- Family Namapsittidae Mourer-Chauviré, Pickford & Senut, 2017 †
- Family Pseudasturidae †
- Family Psittacidae Illiger, 1811
- Genus Agapornis Selby, 1836
- Genus Agrapornis Blyth, 1840 accepted as Agapornis Selby, 1836
- Genus Alipiopsitta Caparroz & Pacheco, 2006
- Genus Alisterus Mathews, 1911
- Genus Amazona Lesson, 1830
- Genus Amoropsitta accepted as Bolborhynchus Bonaparte, 1857
- Genus Amoropsittaca Richmond, 1915
- Genus Androglossa Vigors, 1825
- Genus Androglossus Gray, 1840
- Genus Anodontorhynchus Agassiz, 1846 accepted as Anodorhynchus Spix, 1824
- Genus Anodorhynchos Brehm, 1843 accepted as Anodorhynchus Spix, 1824
- Genus Anodorhynchus Spix, 1824
- Genus Anodorynchus Lichtenstein, 1854 accepted as Anodorhynchus Spix, 1824
- Genus Anoplorhynchus Sundevall, 1872 accepted as Anodorhynchus Spix, 1824
- Genus Aodorhynchus Spix, 1824 accepted as Anodorhynchus Spix, 1824
- Genus Aprosmictus Gould, 1842
- Genus Ara Lacepède, 1799
- Genus Arara Spix, 1824
- Genus Aratinga Spix, 1824
- Genus Aspromictus Giebel, 1872 accepted as Aprosmictus Gould, 1842
- Genus Australasia Lesson, 1830 accepted as Trichoglossus Vigors & Horsfield, 1826
- Genus Barnardius Bonaparte, 1854 accepted as Platycercus Vigors, 1825
- Genus Barrabandius Bonaparte, 1850 accepted as Polytelis Wagler, 1832
- Genus Barrabandius Bonaparte, 1850, nom. nud. accepted as Polytelis Wagler, 1832
- Genus Bolbopsittacus Salvadori, 1891
- Genus Bolborhynchus Bonaparte, 1857
- Genus Bolborhynchus Bonaparte, 1857, nom. nud. accepted as Bolborhynchus Bonaparte, 1857
- Genus Bolborrhynchus Finsch, 1867 accepted as Bolborhynchus Bonaparte, 1857
- Genus Brotogeris Vigors, 1825
- Genus Brotogerys Agassiz, 1846 accepted as Brotogeris Vigors, 1825
- Genus Cacatura accepted as Cacatua Vieillot, 1817
- Genus Cackatto Lauder & Brown, 1833 accepted as Eolophus Bonaparte, 1854
- Genus Caica Lesson, 1830
- Genus Caïca Lesson, 1830 accepted as Caica Lesson, 1830
- Genus Callicephalus Agassiz, 1846 accepted as Callocephalon Lesson in Bougainville, 1837
- Genus Callipsittacus Agassiz, 1846 accepted as Nymphicus Wagler, 1832
- Genus Callocephala Reichenow, 1881 accepted as Callocephalon Lesson in Bougainville, 1837
- Genus Callocephalon Lesson in Bougainville, 1837
- Genus Callocephalum Heine & Reichenow, 1890 accepted as Callocephalon Lesson in Bougainville, 1837
- Genus Callocephalus Salvin, 1882 accepted as Callocephalon Lesson in Bougainville, 1837
- Genus Callocorydon Mathews, 1917 accepted as Callocephalon Lesson in Bougainville, 1837
- Genus Calopsitta Lesson, 1835
- Genus Calopsittacus Salvin, 1882
- Genus Calypthorhynchus Lesson in Bougainville, 1837 accepted as Calyptorhynchus Desmarest, 1826
- Genus Calyptorhinchus Des Murs in Chenu, 1853 accepted as Calyptorhynchus Desmarest, 1826
- Genus Calyptorhynchus Desmarest, 1826
- Genus Calyptorhynchus Vigors, 1825 accepted as Calyptorhynchus Desmarest, 1826
- Genus Calyptorynchus Vigors, 1825 accepted as Calyptorhynchus Desmarest, 1826
- Genus Calyptorynchus Desmarest, 1826 accepted as Calyptorhynchus Desmarest, 1826
- Genus Camptolophus Sundevall, 1872 accepted as Plyctolophus Vieillot, 1816
- Genus Caracopsis Fitzinger, 1856 accepted as Coracopsis Wagler, 1832
- Genus Centrourus G.R. Gray, 1840 accepted as Glossopsitta Bonaparte, 1854
- Genus Centrourus Swainson, 1837
- Genus Centrurus Strickland, 1841
- Genus Centurus Audubon, 1839
- Genus Chaeneirhynchus Jarocki, 1821 accepted as Probosciger Kuhl, 1820
- Genus Chalcopsitta Bonaparte, 1850
- Genus Chalcopsittacus Sundevall, 1872 accepted as Chalcopsitta Bonaparte, 1850
- Genus Charmosina Bonaparte, 1850 accepted as Charmosyna Wagler, 1832
- Genus Charmosyna Wagler, 1832
- Genus Charmosynopsis Salvadori, 1877
- Genus Chrysotis Swainson, 1837
- Genus Comeris Kuhl in Cornalia, 1849
- Genus Conuropsis Salvadori, 1891
- Genus Conurus Kuhl, 1820
- Genus Coracopsis Wagler, 1832
- Genus Coriophilus Sundevall, 1872
- Genus Coriphilus Wagler, 1832
- Genus Corydon Wagler, 1832
- Genus Coryphilus Blyth in Cuvier, 1840
- Genus Corythophilus Agassiz, 1846
- Genus Cyanoliseos Gray, 1870 accepted as Cyanoliseus Bonaparte, 1854
- Genus Cyanoliseus Bonaparte, 1854
- Genus Cyanolyseos Souancé, 1856 accepted as Cyanoliseus Bonaparte, 1854
- Genus Cyanolyseus Bonaparte, 1854 accepted as Cyanoliseus Bonaparte, 1854
- Genus Cyanopsitta Bonaparte, 1854
- Genus Cyanopsittacus Salvadori, 1891 accepted as Cyanopsitta Bonaparte, 1854
- Genus Cyanoramphus McAllan & Bruce, 1989
- Genus Cyanoramphus Bonaparte, 1854
- Species Cyanoramphus auriceps (Kuhl, 1820)
- Species Cyanoramphus cooki
- Species Cyanoramphus cookii (Gray, 1859)
- Species Cyanoramphus forbesi Rothschild, 1893
- Species Cyanoramphus magnirostris Forbes & Robinson, 1897 accepted as Cyanoramphus cookii (Gray, 1859)
- Species Cyanoramphus malherbi Souance, 1857
- Species Cyanoramphus novaezelandiae (Sparrman, 1787)
- Species Cyanoramphus saissetti
- Species Cyanoramphus ulietanus (J.F. Gmelin, 1788)
- Species Cyanoramphus unicolor (Lear, 1831)
- Species Cyanoramphus zealandicus (Latham, 1790)
- Genus Cyanorhamphus Sclater, 1858 accepted as Cyanoramphus Bonaparte, 1854
- Genus Cyanorhynchus Newton, 1894 accepted as Cyanoramphus Bonaparte, 1854
- Genus Cychlopsitta Salvadori, 1874 accepted as Cyclopsitta Reichenbach, 1850
- Genus Cyclopsitta Reichenbach, 1850
- Genus Cyclopsittacus Salvadori, 1880 accepted as Cyclopsitta Reichenbach, 1850
- Genus Cyclopsittacus Sundevall, 1872 accepted as Cyclopsitta Reichenbach, 1850
- Genus Dasyptilus Wagler, 1832
- Genus Deroptyus Wagler, 1832
- Genus Derotypus Bonaparte, 1850 accepted as Deroptyus Wagler, 1832
- Genus Diopsittaca Ridgway, 1912
- Genus Domicella Wagler, 1832 accepted as Lorius Vigors, 1825
- Genus Dyrotypus Finsch, 1868 accepted as Deroptyus Wagler, 1832
- Genus Eclectus Wagler, 1832
- Genus Electus Selby, 1836 accepted as Eclectus Wagler, 1832
- Genus Enicognathus Gray, 1840
- Genus Eolephus accepted as Eolophus Bonaparte, 1854
- Genus Eolophus Bonaparte, 1854
- Genus Eos Wagler, 1832
- Genus Eulophus Giebel, 1874 accepted as Eolophus Bonaparte, 1854
- Genus Eunymphicus Peters, 1937
- Genus Euphema Wagler, 1832 accepted as Lathamus Lesson, 1830
- Genus Euphemia Selby in Jardine, 1836 accepted as Lathamus Lesson, 1830
- Genus Eupsittaca Cabanis, 1862
- Genus Eupsittacula de Miranda Ribeiro, 1920
- Genus Eupsittula Bonaparte, 1853
- Genus Eurhynchus Berthold in Latreille, 1827 accepted as Probosciger Kuhl, 1820
- Genus Eurorynchus Lesson, 1831 accepted as Probosciger Kuhl, 1820
- Genus Eutelipsitta Mathews, 1911 accepted as Trichoglossus Vigors & Horsfield, 1826
- Genus Forpus Boie, 1858
- Genus Geoffroiius Wallace, 1859 accepted as Geoffroyus Bonaparte, 1850
- Genus Geoffroius Sclater, 1858 accepted as Geoffroyus Bonaparte, 1850
- Genus Geoffroy Gray, 1855 accepted as Geoffroyus Bonaparte, 1850
- Genus Geoffroyus Bonaparte, 1850
- Genus Geopsittacus Gould, 1861 accepted as Pezoporus Illiger, 1811
- Genus Glossopsitta Bonaparte, 1854
- Genus Glossopsittacus Reichenow, 1881 accepted as Glossopsitta Bonaparte, 1854
- Genus Glossopsittacus Sundevall, 1872 accepted as Glossopsitta Bonaparte, 1854
- Genus Glossoptila Blyth, 1857 accepted as Glossopsitta Bonaparte, 1854
- Genus Glossoptilus Hartert, 1896 accepted as Glossopsitta Bonaparte, 1854
- Genus Graydidactylus Bonaparte, 1856 accepted as Graydidascalus Bonaparte, 1854
- Genus Graydidascalus Bonaparte, 1854
- Genus Graydidasculus Bonaparte, 1857 accepted as Graydidascalus Bonaparte, 1854
- Genus Guarouba Lesson, 1830 accepted as Guaruba Lesson, 1830
- Genus Guaruba Lesson, 1830
- Genus Gypopsitta Bonaparte, 1856
- Genus Gypopsittacus Salvadori, 1891 accepted as Gypopsitta Bonaparte, 1856
- Genus Hapalopsittaca Ridgway, 1912
- Genus Henicognathus Agassiz, 1846 accepted as Enicognathus Gray, 1840
- Genus Hesperapsittacus Wells & Wellington, 1992
- Genus Hypocharmosyna Salvadori, 1891
- Genus Kacadoe Finsch, 1867 accepted as Cacatua Vieillot, 1817
- Genus Kacatua Schinz in Cuvier, 1821 accepted as Cacatua Vieillot, 1817
- Genus Kakatoë Cuvier, 1800 accepted as Kakatoe Cuvier, 1800
- Genus Khwenena Manegold, 2013 †
- Genus Larius Boddaert, 1783 accepted as Eclectus Wagler, 1832
- Genus Lathamus Lesson, 1830
- Genus Layardiella Mathews, 1917 accepted as Prosopeia Bonaparte, 1854
- Genus Leptolophus Swainson, 1833
- Genus Leptopsittaca Salvin, 1897 accepted as Leptosittaca Berlepsch & Stolzmann, 1894
- Genus Leptorhynchus Swainson, 1837 accepted as Enicognathus Gray, 1840
- Genus Leptorynchus Swainson, 1837 accepted as Enicognathus Gray, 1840
- Genus Leptosittaca Berlepsch & Stolzmann, 1894
- Genus Lophopsittacus Newton, 1875
- Genus Loriculus Blyth, 1850
- Genus Lorius Vigors, 1825
- Genus Manopsitta Mathews, 1913 accepted as Cyclopsitta Reichenbach, 1850
- Genus Mascarina Giebel, 1875 accepted as Mascarinus Lesson, 1830
- Genus Mascarinus Lesson, 1830
- Genus Melopsitta Milne-Edwards, 1866 accepted as Melopsittacus Gould, 1840
- Genus Melopsittacus Gould, 1840
- Genus Microglosse Geoffroy, 1823 accepted as Probosciger Kuhl, 1820
- Genus Microglossum Vigors, 1825 accepted as Probosciger Kuhl, 1820
- Genus Microglossus Vieillot, 1822 accepted as Probosciger Kuhl, 1820
- Genus Micropsitta Lesson, 1831
- Genus Microsittaca Sharpe, 1900 accepted as Enicognathus Gray, 1840
- Genus Microsittace Bonaparte, 1854 accepted as Enicognathus Gray, 1840
- Genus Mogontiacopsitta Mayr, 2010 †
- Genus Muscarinus Gray, 1840 accepted as Mascarinus Lesson, 1830
- Genus Myiopsitta Bonaparte, 1854
- Genus Myopsitta Bonaparte, 1857 accepted as Myiopsitta Bonaparte, 1854
- Genus Myopsittacus Salvadori, 1891 accepted as Myiopsitta Bonaparte, 1854
- Genus Nandayus Bonaparte, 1854
- Genus Nannopsittaca Ridgway, 1912
- Genus Nannopsittacea accepted as Nannopsittaca Ridgway, 1912
- Genus Nanodes Stephens in Shaw, 1826 accepted as Lathamus Lesson, 1830
- Genus Necropsittacus Milne-Edwards, 1873
- Genus Neonanodes Mathews, 1912
- Genus Neophema Salvadori, 1891
- Genus Neopsephotus Mathews, 1912
- Genus Neopsittacus Salvadori, 1875
- Genus Nestor Lesson, 1830
- Genus Nicropsitta accepted as Micropsitta Lesson, 1831
- Genus Northiella Mathews, 1912
- Genus Northipsitta Mathews, 1912 accepted as Polytelis Wagler, 1832
- Genus Notopsittacus McAllan & Bruce, 1989
- Genus Nymphicus Wagler, 1832
- Genus Ognorhynchus Bonaparte, 1857
- Genus Ogonorhynchus Dubois, 1899 accepted as Ognorhynchus Bonaparte, 1857
- Genus Opopsitta Sclater, 1860 accepted as Cyclopsitta Reichenbach, 1850
- Genus Oreopsittacus Salvadori, 1877
- Genus Orthopsittaca Ridgway, 1912
- Genus Pachynus Reichenow, 1881 accepted as Graydidascalus Bonaparte, 1854
- Genus Paeocephalus Strickland, 1841 accepted as Poicephalus Swainson, 1837
- Genus Palaeopsittacus Harrison, 1982 †
- Genus Palaeornis Vigors, 1825
- Genus Paleornis Swainson, 1829
- Genus Pallacidopsittacus Wells & Wellington, 1992
- Genus Parvipsitta Mathews, 1916 accepted as Glossopsitta Bonaparte, 1854
- Genus Peropterus Partington, 1837 accepted as Pezoporus Illiger, 1811
- Genus Pezeporus Kaup, 1836 accepted as Pezoporus Illiger, 1811
- Genus Pezophorus Oken, 1816 accepted as Pezoporus Illiger, 1811
- Genus Pezoporus Illiger, 1811
- Genus Phaecocephalus Heuglin, 1862 accepted as Poicephalus Swainson, 1837
- Genus Phaeocephalus Hartlaub, 1857 accepted as Poicephalus Swainson, 1837
- Genus Phigys Gray, 1870
- Genus Phippspsittacus McAllan & Bruce, 1989 accepted as Cyanoramphus Bonaparte, 1854
- Genus Piocephalus Gray, 1840 accepted as Poicephalus Swainson, 1837
- Genus Pione Jacquinot & Pucheran, 1853 accepted as Pionus Wagler, 1832
- Genus Pionias Finsch, 1867 accepted as Pionus Wagler, 1832
- Genus Pionites Heine in Heine & Reichenow, 1890 accepted as Caica Lesson, 1830
- Genus Pionius Lawrence, 1862 accepted as Pionus Wagler, 1832
- Genus Pionopsitta Bonaparte, 1854
- Genus Pionopsittacus Sundevall, 1872 accepted as Pionopsitta Bonaparte, 1854
- Genus Pionus Wagler, 1832
- Genus Platicercus Lesson, 1831 accepted as Platycercus Vigors, 1825
- Genus Platycercus Vigors, 1825
- Genus Platycerus accepted as Platycercus Vigors, 1825
- Genus Platycircus Swainson, 1836 accepted as Platycercus Vigors, 1825
- Genus Plectolophus Bourjot St. Hilaire, 1837-38 accepted as Plyctolophus Vieillot, 1816
- Genus Plictolophus Finsch, 1867 accepted as Plyctolophus Vieillot, 1816
- Genus Pluctolophus Nitzsch, 1840 accepted as Plyctolophus Vieillot, 1816
- Genus Plyctolophus Vieillot, 1816
- Genus Plyctolophus Burmeister, 1850 accepted as Plyctolophus Vieillot, 1816
- Genus Poeocephalus Agassiz, 1846 accepted as Poicephalus Swainson, 1837
- Genus Poicephalus Swainson, 1837
- Genus Poiocephalus Strickland, 1841 accepted as Poicephalus Swainson, 1837
- Genus Polychlorus Sclater, 1858 accepted as Eclectus Wagler, 1832
- Genus Polychrous Gray, 1870 accepted as Eclectus Wagler, 1832
- Genus Polyletes Blyth in Blyth, 1840 accepted as Polytelis Wagler, 1832
- Genus Polyteles Reichenbach, 1850 accepted as Polytelis Wagler, 1832
- Genus Polytelis Wagler, 1832
- Genus Porphyreicephalus Reichenow, 1881 accepted as Purpureicephalus Bonaparte, 1854
- Genus Porphyreocephalus Reichenow, 1880 accepted as Purpureicephalus Bonaparte, 1854
- Genus Porphyrocephalus Salvadori, 1891 accepted as Purpureicephalus Bonaparte, 1854
- Genus Porphyrocephalus Heine in Heine & Reichenow, 1890 accepted as Purpureicephalus Bonaparte, 1854
- Genus Primolius Bonaparte, 1857
- Genus Prioniturus Wagler, 1832
- Genus Prionus accepted as Pionus Wagler, 1832
- Genus Probosciger Kuhl, 1820
- Genus Prophyrrhura Mirando Ribeiro, 1920 accepted as Primolius Bonaparte, 1857
- Genus Propyrrhura Mirando Ribeiro, 1920 accepted as Primolius Bonaparte, 1857
- Genus Prosopaea Bonaparte, 1856 accepted as Prosopeia Bonaparte, 1854
- Genus Prosopeia Bonaparte, 1854
- Genus Psephotellus Mathews, 1913
- Genus Psephotis Newton, 1875 accepted as Psephotus Gould, 1845
- Genus Psephotus Gould, 1845
- Genus Pseudeos Peters, 1935
- Genus Pseudopsittacus MacGillivray, 1913 accepted as Geoffroyus Bonaparte, 1850
- Genus Psilopsiagon Ridgway, 1912 accepted as Bolborhynchus Bonaparte, 1857
- Genus Psittaca Boddaert, 1783 accepted as Psittacus Linnaeus, 1758
- Genus Psittacara Vigors, 1825
- Genus Psittacaria Meyen, 1834
- Genus Psittacella Schlegel, 1871
- Genus Psittacotrichas Agassiz, 1846 accepted as Psittrichas Lesson, 1831
- Genus Psittacula Cuvier, 1800
- Genus Psittacula Kuhl, 1820
- Genus Psittaculirostris Gray & Gray, 1859
- Genus Psittaculus Spix, 1824
- Genus Psittacus Linnaeus, 1758
- Genus Psittenteles Giebel, 1876 accepted as Psitteuteles Bonaparte, 1854
- Genus Psitteuteles Bonaparte, 1854
- Genus Psittinus Blyth, 1842
- Genus Psittrichas Lesson, 1831
- Genus Ptilosclera Bonaparte, 1857, nom. nud. accepted as Psitteuteles Bonaparte, 1854
- Genus Ptilosclera Bonaparte, 1857 accepted as Psitteuteles Bonaparte, 1854
- Genus Ptistes Gould, 1865 accepted as Aprosmictus Gould, 1842
- Genus Ptyctolophus Agassiz, 1845 accepted as Plyctolophus Vieillot, 1816
- Genus Purpureicephalus Bonaparte, 1854
- Genus Purpureocephalus Reichenow, 1881 accepted as Purpureicephalus Bonaparte, 1854
- Genus Pyrrhura Bonaparte, 1856
- Genus Rhodocephalus Reichenow, 1881 accepted as Geoffroyus Bonaparte, 1850
- Genus Rhynchopsitta Bonaparte, 1854
- Genus Rhynchopsittacus Salvadori, 1891 accepted as Rhynchopsitta Bonaparte, 1854
- Genus Rhyncopsitta Bonaparte, 1854 accepted as Rhynchopsitta Bonaparte, 1854
- Genus Sindelia Wells & Wellington, 1992 accepted as Polytelis Wagler, 1832
- Genus Sittace Wagler, 1832
- Genus Solenoglossus Ranzani, 1821 accepted as Probosciger Kuhl, 1820
- Genus Spathopterus North, 1895 accepted as Polytelis Wagler, 1832
- Genus Strigops Gray, 1845
- Genus Strigopsis Bonaparte, 1849 accepted as Strigops Gray, 1845
- Genus Stringops Finsch, 1867 accepted as Strigops Gray, 1845
- Genus Stringopsis Van der Hoeven, 1855 accepted as Strigops Gray, 1845
- Genus Strygops Des Murs in Chenu, 1853 accepted as Strigops Gray, 1845
- Genus Tanignathus Bonaparte, 1856 accepted as Tanygnathus Wagler, 1832
- Genus Tanygnathus Wagler, 1832
- Genus Thectocercus Ridgway, 1912
- Genus Torpus Gray, 1870 accepted as Forpus Boie, 1858
- Genus Touit Gray, 1855
- Genus Trichoglossus Vigors & Horsfield, 1826
- Genus Trichoglosus Pearson, 1841 accepted as Trichoglossus Vigors & Horsfield, 1826
- Genus Triclara accepted as Triclaria Wagler, 1832
- Genus Triclaria Wagler, 1832
- Genus Trychoglossus Rosenberg, 1863 accepted as Trichoglossus Vigors & Horsfield, 1826
- Genus Vini Lesson, 1833
- Genus Vinia Sharpe, 1900 accepted as Vini Lesson, 1833
- Genus Violania Wells & Wellington, 1992
- Family Psittaciformes (awaiting allocation)
- Family Psittaculidae Vigors, 1825
- Family Strigopidae Bonaparte, 1849
- Genus Bavaripsitta Mayr & Göhlich, 2004 †
- Genus Heracles Worthy, Hand, Archer, Scofield & De Pietri, 2019 †
- Genus Mopsitta Waterhouse, Lindow, Zelenkov & Dyke, 2008 †
- 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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