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
- Class Mammalia
- Class Mammaliaformes incertae sedis †
- Class Reptilia
- Order Aetosauria †
- Order Anapsida (awaiting allocation)
- Order Araeoscelida † represented as Araeoscelidia †
- Order Araeoscelidia †
- Order Archosauria (awaiting allocation) †
- Order Archosauria incertae sedis
- Order Archosauriformes incertae sedis †
- Order Archosauromorpha incertae sedis †
- Order Avetheropoda †
- Order Captorhinida †
- Order Chelonia accepted as Testudines
- Order Choristodera †
- Order Cotylosauria †
- Order Crocodylia
- Order Crocodyliformes incertae sedis
- Order Crocodylomorpha incertae sedis
- Order Diapsida incertae sedis †
- Order Dinosauria (awaiting allocation) †
- Order Dinosauria incertae sedis †
- Order Dinosauriformes (awaiting allocation) †
- Order Eosuchia †
- Order Eusuchia incertae sedis
- Order Herrerasauria †
- Order Huenesuchia †
- Order Hupehsuchia †
- Order Ichthyopterygia (awaiting allocation) †
- Order Ichthyosauria †
- Order Lepidosauria (awaiting allocation)
- Order Lepidosauria incertae sedis
- Order Lepidosauromorpha incertae sedis
- Order Loricata incertae sedis
- Order Mesoeucrocodylia incertae sedis
- Order Neodiapsida incertae sedis
- Order Neosuchia incertae sedis
- Order Nothosauria †
- Order Ornithischia †
- Order Parareptilia incertae sedis †
- Order Paraves incertae sedis †
- Order Pareiasauria †
- Order Pelycosauria †
- Order Placodontia †
- Order Plesiosauria †
- Order Procolophonoidea †
- Order Procolophonomorpha †
- Order Prolacertiformes †
- Order Protorosauria †
- Order Pterosauria †
- Order Pterosauromorpha incertae sedis †
- Order Rauisuchiformes †
- Order Reptilia (awaiting allocation)
- Order Reptilia incertae sedis
- Order Rhynchocephalia
- Order Rhynchosauria †
- Order Saurischia †
- Order Sauropsida (awaiting allocation) †
- Order Sauropterygia † accepted as Sauropterygia incertae sedis
- Order Sauropterygia incertae sedis
- Order Sphenodontida
- Order Squamata
- Family Acrochordidae Bonaparte, 1840
- Family Acrodonta incertae sedis
- Family Agamidae Gray, 1827
- Family Aigialosauridae Kramberger, 1892 †
- Family Amphisbaenia (awaiting allocation)
- Family Amphisbaenia incertae sedis
- Family Amphisbaenidae Gray, 1865
- Family Anguidae Gray, 1825
- Family Anguimorpha incertae sedis
- Family Aniliidae Fitzinger, 1826
- Family Anilioidea incertae sedis †
- Family Anniellidae
- Family Anomalepidae
- Family Anomalophiidae †
- Family Anomochilidae
- Family Aprasiaidae Wells, 2007 accepted as Pygopodidae Boulenger, 1884
- Family Ardeosauridae Camp, 1923 †
- Family Arretosauridae Gilmore, 1943 †
- Family Atractaspididae
- Family Bainguidae Borsuk-Bialynicka, 1984 †
- Family Barbatteiidae Codrea, Venczel & Solomon, 2017 †
- Family Bavarisauridae Kuhn, 1961 †
- Family Bipedidae
- Family Blanidae Kearney, 2003
- Family Boidae Gray, 1825
- Family Bolyeridae accepted as Bolyeriidae
- Family Bolyeriidae
- Family Booidea incertae sedis †
- Family Borioteiioidea incertae sedis †
- Family Caenophidia (awaiting allocation)
- Family Carolinidae Borsuk-Bialynicka, 1985 †
- Family Carphodactylidae Kluge, 1967
- Family Chamaeleonidae Gray, 1825
- Family Chamaeleontidae
- Family Chamopsiidae Nydam, Caldwell & Fanti, 2010 †
- Family Changjiangosauridae Hou, 1976 †
- Family Colubridae Oppel, 1811
- Family Colubroidea (awaiting allocation)
- Family Contogeniidae Nydam & Fitzpatrick, 2009 †
- Family Cordylidae Gray, 1837
- Family Corytophanidae
- Family Crotalidae
- Family Crotaphytidae
- Family Cyclocoridae Weinell & Brown, 2017
- Family Cylindrophiidae Fitzinger, 1843
- Family Dactyloidae Fitzinger, 1843
- Family Dibamidae Boulenger, 1884
- Family Dinilysiidae Romer, 1956 †
- Family Diplodactylidae Underwood, 1954
- Family Diploglossidae Boucourt, 1873
- Family Dipsadidae Bonaparte, 1840
- Family Dolichosauridae Gervais, 1852 †
- Family Dorsetisauridae Hoffstetter, 1967 †
- Family Eichstaettisauridae Kuhn, 1958 †
- Family Elapidae Boié, 1827
- Family Eolacertidae Čerňanský & Smith, 2017 †
- Family Eoxantidae Alifanov, 1993 †
- Family Erycidae Bonaparte, 1825 †
- Family Erycinidae Kuhn, 1967 accepted as Boidae Gray, 1825
- Family Euposauridae Camp, 1923 †
- Family Gekkonidae Gray, 1825
- Family Gekkoolithidae Hirsch, 1996 †
- Family Gekkota incertae sedis
- Family Gerrhosauridae
- Family Globauridae Alifanov, 2000 †
- Family Gobiguania incertae sedis †
- Family Gymnophthalmidae Fitzinger, 1826
- Family Helodermatidae Gray, 1837
- Family Hoplocercidae
- Family Hydrophidae accepted as Hydrophiidae Smith, 1926
- Family Hydrophiidae Smith, 1926
- Family Hyporhinidae Baur, 1893 †
- Family Iguania incertae sedis
- Family Iguanidae Gray, 1827
- Family Isodontosauridae Alifanov, 1993 †
- Family Kuehneosauridae Romer, 1966 †
- Family Lacertibaenia incertae sedis †
- Family Lacertidae Bonaparte, 1831
- Family Lacertilia (awaiting allocation)
- Family Lacertoidea incertae sedis
- Family Lamprophiidae Fitzinger, 1843
- Family Lanthanotidae Steindachner, 1878
- Family Lanthonotidae
- Family Lapparantophiidae †
- Family Lapparentopheidae Hoffstetter, 1968 †
- Family Laticaudidae
- Family Leiosauridae
- Family Leptotyphlopidae Stejneger, 1892
- Family Loxocemidae
- Family Macrocephalosauridae Sulimski, 1975 †
- Family Macrostomata incertae sedis †
- Family Madstoiidae † accepted as Madtsoiidae Hoffstetter, 1961 †
- Family Madtsoiidae Hoffstetter, 1961 †
- Family Monstersauria incertae sedis †
- Family Mosasauria incertae sedis †
- Family Mosasauridae Gervais, 1853 †
- Family Necrosauridae Hoffstetter, 1943 †
- Family Nigerophiidae Rage, 1975 †
- Family Oligodontosauridae Estes, 1975 †
- Family Ophidia incertae sedis
- Family Opluridae
- Family Pachyophiidae Nopcsa, 1923 †
- Family Palaeopheidae Lydekker, 1888 † accepted as Palaeophiidae Lydekker, 1888 †
- Family Palaeophidae † accepted as Palaeophiidae Lydekker, 1888 †
- Family Palaeophiidae Lydekker, 1888 †
- Family Palaeovaranidae Georgalis, 2017 †
- Family Paliguanidae †
- Family Paramacellodidae Estes, 1983 †
- Family Parasaniwidae Estes, 1964 †
- Family Paravaranidae Borsuk-Bialynicka, 1984 †
- Family Pareatidae Romer, 1956 accepted as Pareidae Romer, 1956
- Family Pareidae Romer, 1956
- Family Phrynosomatidae
- Family Platynota incertae sedis
- Family Pleurodonta incertae sedis
- Family Polychrotidae
- Family Polyglyphanodontia incertae sedis †
- Family Polyglyphanodontidae Gilmore, 1942 †
- Family Polyodontobaenidae Folie, Smith & Smith, 2013 †
- Family Priscagamidae Borsuk-Białynicka & Moody, 1984 †
- Family Pygopodidae Boulenger, 1884
- Family Pythonidae Fitzinger, 1826 accepted as Boidae Gray, 1825
- Family Rhineuridae Vanzolini, 1951 †
- Family Russelophiidae †
- Family Sauria (awaiting allocation)
- Family Saurosternidae Haughton, 1924 †
- Family Scincidae Gray, 1825
- Genus Ablepharis Cocteau, 1832 accepted as Ablepharus Fitzinger, 1823
- Genus Ablepharus Fitzinger, 1823
- Genus Acontias Cuvier, 1817
- Genus Acontophiops Sternfeld, 1912
- Genus Acritoscincus Wells & Wellington, 1985
- Genus Adrasteia Wells, 2002 accepted as Lampropholis Fitzinger, 1843
- Genus Adrasteiascincus Wells, 2010
- Genus Aethesia Hutchinson & Scanlon, 2009 †
- Genus Afroablepharus Greer, 1974
- Genus Afroblepharus accepted as Afroablepharus Greer, 1974
- Genus Alcisius Wells, 2012
- Genus Alinea Hedges & Conn, 2012
- Genus Allengreerus Hoser, 2009 accepted as Lampropholis Fitzinger, 1843
- Genus Allengreerus Hoser, 2012 accepted as Lampropholis Fitzinger, 1843
- Genus Allodactylus Lataste & Rochebrune, 1876
- Genus Alpinoscincus Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza & Meiri, 2022
- Genus Amphiglosse Duméril & Bibron, 1839 accepted as Amphiglossus Duméril & Bibron, 1839
- Genus Amphiglossus Duméril & Bibron, 1839
- Genus Anaomalopus accepted as Anomalopus Duméril, 1851
- Genus Androngo Brygoo, 1982
- Genus Anepischetos Wells & Wellington, 1983 accepted as Nannoscincus Günther, 1872
- Genus Anepischetosia Wells & Wellington, 1985 accepted as Nannoscincus Günther, 1872
- Genus Anisoterma Duméril, 1856
- Species Anisoterma sphenopsiforme Duméril, 1856 accepted as Sphenops sphenopsiformis Duméril, 1856
- Genus Anomalopus Duméril, 1851
- Genus Anomalpus Gunther, 1875 accepted as Anomalopus Duméril, 1851
- Genus Anotis Bavay, 1869
- Genus Aphroditia Wells, 2012
- Genus Apterygodon Edeling, 1864
- Genus Arenicolascincus Wells & Wellington, 1985 accepted as Hemiergis Wagler, 1830
- Genus Aspris Blyth, 1853
- Genus Aspronema Hedges & Conn, 2012
- Genus Asumblepharus accepted as Asymblepharus Eremchenko & Shcherbak, 1980
- Genus Asymblepharus Eremchenko & Shcherbak, 1980
- Genus Ateuchosaurus Gray, 1845
- Genus Aulacoplax Brown & Fehlmann, 1958
- Genus Axonoscincus Augé, 2003 †
- Genus Ayalasaurus Augé, 2005 †
- Genus Barkudia Annandale, 1917
- Genus Bartleia Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Bassiana Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Bellatorias Wells & Wellington, 1983 accepted as Egernia Gray, 1838
- Genus Berruva Augé, 2005 †
- Genus Blepharosteres Stoliczka, 1872
- Genus Brachistopus Agassiz, 1846
- Genus Brachymeles Duméril & Bibron, 1839
- Genus Brachymelus Agassiz, 1846 accepted as Brachymeles Duméril & Bibron, 1839
- Genus Brachyseps Erens, Miralles, Glaw, Chatrou & Vences, 2017 accepted as Mesomycterus Cope, 1892
- Genus Brachystopus Duméril & Bibron, 1839
- Genus Brasiliscincus Hedges & Conn, 2012
- Genus Caesoris Sadlier, Bauer, Shea & Smith, 2015
- Genus Caledoniscincus Sadlier, 1987
- Genus Caledonoscincus accepted as Caledoniscincus Sadlier, 1987
- Genus Calyptotis De Vis, 1886
- Genus Calyptotus Wells & Wellington, 1985 accepted as Calyptotis De Vis, 1886
- Genus Campsodactylus Duméril & Bibron, 1839
- Genus Campsodactylus Cocteau & Duméril, 1837
- Genus Capitellum Hedges & Conn, 2012
- Genus Carinascincus Wells & Wellington, 1985 accepted as Niveoscincus Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Carlia Gray, 1845
- Genus Cautula Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Celatiscincus Sadlier, Smith & Bauer, 2006
- Genus Chabanaudia de Witte, 1943
- Genus Chalcida Meyer, 1795 accepted as Chalcides Laurenti, 1768
- Genus Chalcides Laurenti, 1768
- Genus Chalcidoseps Boulenger, 1887
- Genus Chalcis Cuvier, 1800 accepted as Chalcides Laurenti, 1768
- Genus Chelomeles Duméril & Bibron, 1839
- Genus Chiamela Gray, 1839
- Genus Chioninia Gray, 1845
- Genus Claireascincus Wells & Wellington, 1985 accepted as Pseudemoia
- Genus Coeranoscincus Wells & Wellington, 1983
- Genus Coggeria Couper, Covacevich, Marsterson & Shea, 1996
- Genus Coloscincus Peters, 1876
- Genus Concinnia Wells & Wellington, 1983
- Genus Contogenys Estes, 1969 †
- Genus Contundo Wells & Wellington, 1983 accepted as Egernia Gray, 1838
- Genus Copeoglossum Tschudi, 1845
- Genus Cophoscincopus Mertens, 1934
- Genus Cophoscincus Vaillant, 1884 accepted as Cophoscincopus Mertens, 1934
- Genus Corucia Gray, 1856
- Genus Costinisauria Wells & Wellington, 1985 accepted as Eulamprus Fitzinger, 1843
- Genus Cryptoblepharis Cocteau, 1836 accepted as Cryptoblepharus Wiegmann, 1834
- Genus Cryptoblepharus Wiegmann, 1834
- Genus Ctenotus Storr, 1964
- Genus Cybelia Wells, 2012
- Genus Cyclodina Girard, 1857
- Genus Cyclodomorphus Fitzinger, 1843
- Genus Cyclodus Wagler, 1828
- Genus Dasamia Horton, 1973
- Genus Dasia Gray, 1839
- Genus Davewakeum Heyer, 1972
- Genus Deloidiogenes Wells & Wellington, 1985 accepted as Eulamprus Fitzinger, 1843
- Genus Dicloniscus Cope, 1892 accepted as Chalcides Laurenti, 1768
- Genus Didosaurus Günther, 1877 †
- Genus Dimeropus Cope, 1892 accepted as Larutia Bohme, 1981
- Genus Dumerilia Barboza de Bocage, 1866 accepted as Sepsina Barboza du Bocage, 1866
- Genus Edenia Wells, 2009
- Genus Egernia Gray, 1838
- Genus Elabites Gistl, 1848
- Genus Elaenia Agassiz, 1846
- Genus Elania Gray, 1845
- Genus Electroscincus Daza et al., 2024 †
- Genus Elfakhariscincus Hoser, 2012 accepted as Chalcides Laurenti, 1768
- Genus Emoa Girard, 1857
- Genus Emoea accepted as Emoa Girard, 1857
- Genus Emoia Gray, 1845
- Genus Enoplosaurus Sauvage, 1879
- Genus Epibator Sadlier, Bauer, Shea & Smith, 2015
- Genus Eremiascincus Greer, 1979
- Genus Eroticoscincus Wells & Wellington, 1983
- Genus Estescincosaurus Sullivan, 1997 †
- Genus Eugongylus Fitzinger, 1843
- Genus Eulamprus Fitzinger, 1843
- Genus Eulepis Fitzinger, 1843
- Genus Eumeces Wiegmann, 1834
- Genus Eumecia Barboza du Bocage, 1870
- Genus Eumices Smith, 1849 accepted as Eumeces Wiegmann, 1834
- Genus Euneces Gray, 1840 accepted as Eumeces Wiegmann, 1834
- Genus Euprepes Wiegmann, 1834
- Genus Euprepis Wagler, 1830
- Genus Eupressis accepted as Trachylepis Fitzinger, 1843
- Genus Eupretes accepted as Euprepes Wiegmann, 1834
- Genus Eurepes accepted as Euprepes Wiegmann, 1834
- Genus Eurepis accepted as Eulepis Fitzinger, 1843
- Genus Eurprepes accepted as Euprepes Wiegmann, 1834
- Genus Eurylepis Blyth, 1854
- Genus Eusoma Fitzinger, 1843
- Genus Eutropis Fitzinger, 1843
- Genus Evesia Gray, 1839
- Genus Exila Hedges & Conn, 2012
- Genus Feylinia Gray, 1845
- Genus Fitzsimonsia de Witte, 1943
- Genus Flamoscincus Wells & Wellington, 1983 accepted as Egernia Gray, 1838
- Genus Fojia Greer & Simon, 1982
- Genus Furcillus Cope, 1892 accepted as Lerista Bell, 1833
- Genus Gaia Wells, 2012
- Genus Gavisus Wells & Wellington, 1983 accepted as Lerista Bell, 1833
- Genus Geomyersia Greer & Parker, 1968
- Genus Geoscincus Sadlier, 1987
- Genus Girardiscincus Wells & Wellington, 1985
- Genus Glaphyromorphus Wells & Wellington, 1983
- Genus Gnypetoscincus Wells & Wellington, 1983
- Genus Goldneyia Wells, 2012
- Genus Gongylomorphus Fitzinger, 1843
- Genus Gongylus Wagler, 1830
- Genus Graciliscincus Sadlier, 1987
- Genus Grandidierina Mocquard, 1894
- Genus Haackgreerius Greer & Haacke, 1982
- Genus Hagria Gray, 1839
- Genus Hakaria Steindachner, 1899 accepted as Parachalcides Boulenger, 1899
- Genus Haploscincus Cope, 1892 accepted as Lipinia Gray, 1845
- Genus Hardyscincus Wells & Wellington, 1985 accepted as Leiolopisma Duméril & Bibron, 1839
- Genus Harrisoniascincus Wells & Wellington, 1985
- Genus Helioscincus Wells, 2002 accepted as Lampropholis Fitzinger, 1843
- Genus Hemiergis Wagler, 1830
- Genus Hemipodion Steindachner, 1867
- Genus Hemipodium Boulenger, 1867
- Genus Hemisphaeriodon Peters, 1867
- Genus Hemispheriodon accepted as Hemisphaeriodon Peters, 1867
- Genus Herinea Gray, 1840
- Genus Herinia Gray, 1839
- Genus Herpetosaura Peters, 1854
- Genus Herpetoseps Boulenger, 1887
- Genus Heteromeles Duméril & Bibron, 1839
- Genus Heteropodion Steindachner, 1867
- Genus Heteropus Fitzinger, 1826 accepted as Carlia Gray, 1845
- Genus Himalblepharus Jeriomtschenko in Yeremchenko, 1987
- Genus Hinulia Gray, 1845
- Genus Hombronia Girard, 1857
- Genus Homolepida Lütken, 1863 accepted as Cyclodomorphus Fitzinger, 1843
- Genus Homolepida Peters, 1874
- Genus Homolepides Agassiz, 1846 accepted as Cyclodomorphus Fitzinger, 1843
- Genus Hortonia Wells & Wellington, 1985 accepted as Egernia Gray, 1838
- Genus Ictiscincus Smith, 1937
- Genus Insulasaurus Taylor, 1925
- Genus Isopachys Lönnberg, 1916
- Genus Janetaescincus Greer, 1970
- Genus Jarujinia Chan-ard, Makchai & Cota, 2011
- Genus Kaestlea Eremchenko & Das, 2004
- Genus Kanakysauru Sadlier, Whitaker, Bauer & Smith, 2004
- Genus Kanakysaurus Sadlier, Whitaker, Bauer & Smith, 2004
- Genus Karma Wells, 2009
- Genus Keneuxia Gray, 1845
- Genus Kommosagogus Wells & Wellington, 1984 accepted as Ctenotus Storr, 1964
- Genus Krishna Wells, 2012
- Genus Kuniesaurus Sadlier, Deuss & Bauer in Sadlier et al., 2019
- Genus Lacertaspis Perret, 1975
- Genus Lacertoides Sadlier, Shea & Bauer, 1997
- Genus Lamprolepis Fitzinger, 1843
- Genus Lampropelis Smith, 1935 accepted as Lamprolepis Fitzinger, 1843
- Genus Lampropholis Fitzinger, 1843
- Genus Lamprosaurus Hallowell, 1852
- Genus Lankascincus Greer, 1991
- Genus Larutia Bohme, 1981
- Genus Leiolepisma Fitzinger, 1843 accepted as Leiolopisma Duméril & Bibron, 1839
- Genus Leiolopisma Duméril & Bibron, 1839
- Genus Lepidothyris Cope, 1892 accepted as Mochlus Günther, 1864
- Genus Leptoseps Greer, 1997
- Genus Leptosiaphos Schmidt, 1943
- Genus Leptosoma Fitzinger, 1843 accepted as Lerista Bell, 1833
- Genus Lerista Bell, 1833
- Genus Liburnascincus Wells & Wellington, 1983 accepted as Carlia Gray, 1845
- Genus Ligosoma accepted as Lygosoma Hardwicke & Gray, 1827
- Genus Liolopisma Agassiz, 1846 accepted as Leiolopisma Duméril & Bibron, 1839
- Genus Liopholis Fitzinger, 1843
- Genus Lioscincus Barboza de Bocage, 1873
- Genus Liosoma Fitzinger, 1843
- Genus Lipinia Gray, 1845
- Genus Lissolepis Peters, 1872 accepted as Egernia Gray, 1838
- Genus Lissonota Blyth, 1853
- Genus Lithophilus Smith, 1849
- Genus Litotescincus Wells & Wellington, 1985 accepted as Niveoscincus Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Livoromica accepted as Scincella Mittleman, 1950
- Genus Lobulia Greer, 1974
- Genus Lokisaurus Wells, 2012
- Genus Lubuya Horton, 1972
- Genus Lygisaurus Vis, 1884
- Genus Lygosaurus Hallowell, 1860
- Genus Lygosma accepted as Lygosoma Hardwicke & Gray, 1827
- Genus Lygosoma Hardwicke & Gray, 1827
- Genus Lygosomella Girard, 1857
- Genus Mabiua accepted as Mabuya Fitzinger, 1826
- Genus Mabouia Cuvier, 1829 accepted as Mabuya Fitzinger, 1826
- Genus Mabouya Duméril & Bibron, 1839 accepted as Mabuya Fitzinger, 1826
- Genus Mabuia Cuvier, 1829 accepted as Mabuya Fitzinger, 1826
- Genus Mabuya Fitzinger, 1826
- Genus Mabuya Rafinesque, 1815 accepted as Mabuya Fitzinger, 1826
- Genus Macroscincus Barboza du Bocage, 1873
- Genus Magmellia Wells, 2009
- Genus Magnuscincus Wells & Wellington, 1983 accepted as Ctenotus Storr, 1964
- Genus Malacontias Greer, 1970
- Genus Manciola Hedges & Conn, 2012
- Genus Maracaiba Hedges & Conn, 2012
- Genus Marisora Hedges & Conn, 2012
- Genus Marmorosphax Sadlier, 1987
- Genus Marrunisauria Wells, 2012
- Genus Mawsoniascincus Wells & Wellington, 1985 accepted as Glaphyromorphus Wells & Wellington, 1983
- Genus Melanoseps Boulenger, 1887
- Genus Menethia Smith, 1935 accepted as Menetia Gray, 1845
- Genus Menetia Gray, 1845
- Genus Mesomycterus Cope, 1892
- Genus Mesoscincus Griffith, Ngo & Murphy, 2000
- Genus Mesoscinucs accepted as Mesoscincus Griffith, Ngo & Murphy, 2000
- Genus Micalia Gray, 1845 accepted as Lerista Bell, 1833
- Genus Microacontias Daniels, Heideman, Hendricks & Crandall, 2006
- Genus Miculia Gray, 1845
- Genus Minervascincus Wells & Wellington, 1983
- Genus Mochlus Günther, 1864
- Genus Mocoa Gray, 1845
- Genus Monophorus Cope, 1892 accepted as Phoboscincus Greer, 1974
- Genus Monophyaspis Cope, 1892 accepted as Trachylepis Fitzinger, 1843
- Genus Morethia Gray, 1845
- Genus Mubuia accepted as Mabuya Fitzinger, 1826
- Genus Mubuya accepted as Mabuya Fitzinger, 1826
- Genus Myophila De Vis, 1884
- Genus Nangura Covacevich, Couper & James, 1993
- Genus Nannoscincus Günther, 1872
- Genus Ndurascincus Wells, 2002 accepted as Lampropholis Fitzinger, 1843
- Genus Neopalaia Deshmukh, 2024
- Genus Neoseps Stejneger, 1910
- Genus Nessia Gray, 1839
- Genus Niveoscincus Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Nodorha Mittleman, 1952
- Genus Norbea Gray, 1845
- Genus Notomabuya Hedges & Conn, 2012
- Genus Notoscincus Fuhn, 1969
- Genus Novoeumeces Griffith, Ngo & Murphy, 2000
- Genus Nubeoscincus Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza & Meiri, 2022
- Genus Ocanthias Macklot, 1830 accepted as Acontias Cuvier, 1817
- Genus Oligosoma Girard, 1857
- Genus Ollochirus Cope, 1892 accepted as Lerista Bell, 1833
- Genus Omolepida Gray, 1845
- Genus Oncopus Cope, 1892 accepted as Lerista Bell, 1833
- Genus Opacitascincus Wells & Wellington, 1985 accepted as Glaphyromorphus Wells & Wellington, 1983
- Genus Ophiomorus Duméril & Bibron, 1839
- Genus Ophiopsis Fitzinger, 1843 accepted as Lerista Bell, 1833
- Genus Ophioscincus Peters, 1874
- Genus Ornithuroscincus Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza & Meiri, 2022
- Genus Orosaura Hedges & Conn, 2012
- Genus Orthoscincus Augé, 2005 †
- Genus Otosaurus Gray, 1845
- Genus Palaeoscincosaurus Sullivan & Lucas, 1996 †
- Genus Palaia Slavenko, Tamar, Tallowin, Kraus, Allison, Carranza & Meiri, 2022 accepted as Neopalaia Deshmukh, 2024
- Genus Pamelaescincus Greer, 1970
- Genus Panaspis Cope, 1868
- Genus Panopa Hedges & Conn, 2012
- Genus Papuascincus Allison & Greer, 1986
- Genus Parachalcides Boulenger, 1899
- Genus Paracontias Mocquard, 1894
- Genus Paralipinia Darevsky & Orlov, 1997
- Genus Paralygosoma Chabanaud, 1917 accepted as Lygosoma Hardwicke & Gray, 1827
- Genus Parotosaurus Boulenger, 1914
- Genus Parvoscincus Ferner, Brown & Greer, 1997
- Genus Patheticoscincus Wells & Wellington, 1983 accepted as Glaphyromorphus Wells & Wellington, 1983
- Genus Pediporus Roux, 1930
- Genus Pedorychus Wiegmann, 1837
- Genus Perameles Gray, 1839 accepted as Saiphos Gray, 1830
- Genus Peromeles Wiegmann, 1834 accepted as Saiphos Gray, 1830
- Genus Peromelis Wagler, 1830
- Genus Perretia Broadley, 1989
- Genus Petia Gray, 1839 accepted as Cryptoblepharus Wiegmann, 1834
- Genus Phaeoscincus Sadlier, Smith & Bauer in Sadlier, Bauer, Smith, Shea & Whitaker, 2014
- Genus Phaneropis Fischer, 1881 accepted as Lerista Bell, 1833
- Genus Phaneropus Smith, 1935 accepted as Lerista Bell, 1833
- Genus Phasmasaurus Sadlier, Bauer, Shea & Smith, 2015
- Genus Phoboscincus Greer, 1974
- Genus Pholeophilus Smith, 1849
- Genus Pinoyscincus Linkem, Diesmos & Brown, 2011
- Genus Pleistodon Fitzinger, 1843 accepted as Plestiodon Duméril & Bibron, 1839
- Genus Plestiodon Duméril & Bibron, 1839
- Genus Plistodon Agassiz, 1846 accepted as Plestiodon Duméril & Bibron, 1839
- Genus Podoclonium Cope, 1892 accepted as Scelotes Fitzinger, 1826
- Genus Podophis Wiegmann, 1834
- Genus Praepeditus Duméril & Bibron, 1839
- Genus Praeteropus Hutchinson, Couper, Amey & Wilmer, 2021
- Genus Prasinohaema Greer, 1974
- Genus Proablepharus Fuhn, 1969
- Genus Proegernia Martin, Hutchinson, Meredith, Case & Pledge, 2004 †
- Genus Proscelotes de Witte, 1943
- Genus Protervascincus Wells & Wellington, 1983 accepted as Carlia Gray, 1845
- Genus Protoblepharus Mirza, Bragin, Bhosale, Gowande, Patel & Poyarkov, 2022
- Genus Pseudacontias Hewitt, 1929
- Genus Pseudemoia
- Genus Pseudoacontias Barboza du Bocage, 1889
- Genus Psychosaura Hedges & Conn, 2012
- Genus Pygmaeascincus Couper & Hoskin, 2014
- Genus Pygomeles Grandidier, 1867
- Genus Rachites Cocteau, 1837 accepted as Tiliqua Gray, 1825
- Genus Rachites Gray, 1845
- Genus Rhachites Gray, 1845 accepted as Tiliqua Gray, 1825
- Genus Rhachites Cocteau, 1837 accepted as Tiliqua Gray, 1825
- Genus Rhiannodon Wells, 2009
- Genus Rhinoscincus Peters, 1874 accepted as Sepsina Barboza du Bocage, 1866
- Genus Rhodona Gray, 1839
- Genus Riopa Gray, 1839
- Genus Ristella Gray, 1839
- Genus Robbisaurus Wells & Wellington, 1985
- Genus Ronia Gray, 1841
- Genus Saiphos Gray, 1830
- Genus Saproscincus Wells & Wellington, 1983
- Genus Saurillus Owen, 1855 †
- Genus Sauriscus Estes, 1964 †
- Genus Sauroscincus Peters, 1879
- Genus Scelotes Fitzinger, 1826
- Genus Scincella Mittleman, 1950
- Genus Scincodipus Peters, 1875 accepted as Sepsina Barboza du Bocage, 1866
- Genus Scincopus Peters, 1864
- Genus Scincus Laurenti, 1768
- Genus Scincus Gronovius, 1763 accepted as Scincus Laurenti, 1768
- Genus Scineus accepted as Scincus Laurenti, 1768
- Genus Scinus Steindachner, 1867 accepted as Scincus Laurenti, 1768
- Genus Scolecoseps Loveridge, 1920
- Genus Seincus accepted as Scincus Laurenti, 1768
- Genus Senira Gray, 1845
- Genus Sepacontias Günther, 1880
- Genus Sepomorphus Peters, 1861
- Genus Sepophis Boulenger, 1887 accepted as Sepsophis Beddome, 1870
- Genus Seps Laurenti, 1768
- Genus Sepsia Rafinesque, 1814
- Genus Sepsina Barboza du Bocage, 1866
- Genus Sepsiscus Hutchinson, Couper, Amey & Wilmer, 2021
- Genus Sepsophis Beddome, 1870
- Genus Serenitas Wells, 2009
- Genus Siaphos Gray, 1839 accepted as Saiphos Gray, 1830
- Genus Siaphus Fitzinger, 1861 accepted as Saiphos Gray, 1830
- Genus Sigaloseps Sadlier, 1987
- Genus Sigalospes accepted as Sigaloseps Sadlier, 1987
- Genus Silubolepis Duméril & Bibron, 1839 accepted as Tiliqua Gray, 1825
- Genus Silubosaurus Gray, 1845
- Genus Silvascincus Skinner, Hutchinson & Lee, 2013
- Genus Silybolepis Agassiz, 1846 accepted as Tiliqua Gray, 1825
- Genus Simiscincus Sadlier & Bauer, 1997
- Genus Sincus Gray, 1825 accepted as Scincus Laurenti, 1768
- Genus Sirenoscincus Sakata & Hikida, 2003
- Genus Sivascincus Wells & Wellington, 1985 accepted as Egernia Gray, 1838
- Genus Solvonemesis Wells & Wellington, 1983 accepted as Morethia Gray, 1845
- Genus Soridia Gray, 1839
- Genus Spectrascincus Wells, 2012
- Genus Sphaenops Wagler, 1830 accepted as Sphenops Wagler, 1830
- Genus Sphenocephalus Blyth, 1853
- Genus Sphenocephalus Fitzinger (?), 1843
- Genus Sphenomorphus Fitzinger, 1843
- Genus Sphenops Wiegmann, 1834 accepted as Sphenops Wagler, 1830
- Genus Sphenops Wagler, 1830
- Genus Sphenorhina Hallowell, 1857
- Genus Sphenoscincus Peters, 1875
- Genus Sphenosoma Fitzinger, 1843
- Genus Squamacilia Mittleman, 1952 accepted as Lygosoma Hardwicke & Gray, 1827
- Genus Squamicilia Mittleman, 1952
- Genus Stincus Link, 1794 accepted as Scincus Laurenti, 1768
- Genus Storrisaurus Wells & Wellington, 1985 accepted as Egernia Gray, 1838
- Genus Subdoluseps Freitas, Datta-Roy, Karanth, Grismer & Siler, 2019
- Genus Tachydosaurus Gray, 1838 accepted as Tiliqua Gray, 1825
- Genus Tachygia accepted as Tachygyia Mittleman, 1952
- Genus Tachygyia Mittleman, 1952
- Genus Tantaloscincus Wells & Wellington, 1983 accepted as Ctenotus Storr, 1964
- Genus Tasmascincus Wells & Wellington, 1985 accepted as Niveoscincus Hutchinson, Donnellan, Baverstock, Krieg, Simms & Burgin, 1990
- Genus Techmarscincus Wells & Wellington, 1985
- Genus Telchinoscincus Wells & Wellington, 1983 accepted as Lerista Bell, 1833
- Genus Teliqua accepted as Tiliqua Gray, 1825
- Genus Theconyx Annandale, 1906
- Genus Thyrus Gray, 1845
- Genus Tiligua Cocteau in Duméril, 1837 accepted as Tiliqua Gray, 1825
- Genus Tiliqua Gray, 1825
- Genus Torpidolepisma Fitzinger, 1843 accepted as Egernia Gray, 1838
- Genus Trachydosaurus Gray, 1825
- Genus Trachylepis Fitzinger, 1843
- Genus Trachysaurus Gray in King, 1826 accepted as Tiliqua Gray, 1825
- Genus Trauchysaurus Wagler, 1832
- Genus Triblonotus Fitzinger, 1843 accepted as Tribolonotus Duméril & Bibron, 1839
- Genus Tribolinotus accepted as Tribolonotus Duméril & Bibron, 1839
- Genus Tribolonotus Duméril & Bibron, 1839
- Genus Tridactylus Cuvier, 1829
- Genus Tridentulus Cope, 1892 accepted as Lerista Bell, 1833
- Genus Tropidolepisma Peters, 1844
- Genus Tropidolopisma Duméril & Bibron, 1839
- Genus Tropidophorus Duméril & Bibron, 1839
- Genus Tropidoscincus Barboza de Bocage, 1873
- Genus Tumbunascincus Skinner, Hutchinson & Lee, 2013
- Genus Tychismia Wells, 2012
- Genus Typhlacontias Barboza de Bocage, 1873
- Genus Typhline Wiegmann, 1834
- Genus Typhlophthalmus Rochebrune, 1884
- Genus Typhlosaurus Wiegmann, 1834
- Genus Typhloseps Angel, 1920
- Genus Tytthoscincus Linkem, Diesmos & Brown, 2011
- Genus Vaderscincus Wells & Wellington, 1983 accepted as Oligosoma Girard, 1857
- Genus Varzea Hedges & Conn, 2012
- Genus Vermiseps Greer & Cogger, 1985
- Genus Vietnascincus Darevsky & Orlov, 1994
- Genus Voeltzkowia Böttger, 1893
- Genus Wondjinia Wells, 2012
- Genus Zeusius Wells, 2007 accepted as Cyclodomorphus Fitzinger, 1843
- Genus Zonurus Merrem, 1820
- Genus Zygnidopsis Blanford, 1879
- Genus Zygnis Oken, 1816
- Genus Zygnopsis Blanford, 1874
- Family Scincogekkonomorpha incertae sedis
- Family Scincoidea (awaiting allocation)
- Family Scincoidea incertae sedis
- Family Scincomorpha incertae sedis
- Family Scleroglossa incertae sedis
- Family Serpentes (awaiting allocation)
- Family Serpentes incertae sedis †
- Family Shinisauridae Ahl, 1930
- Family Simoliophiidae †
- Family Sphaerodactylidae Underwood, 1954
- Family Squamata (awaiting allocation)
- Family Teiidae Gray, 1827
- Family Trogonophidae Bonaparte, 1838
- Family Trogonophiidae accepted as Trogonophidae Bonaparte, 1838
- Family Tropidophiidae Cope, 1894
- Family Tropiduridae
- Family Typhlopidae Bonaparte, 1831
- Family Uropeltidae
- Family Varanidae Hardwicke & Gray, 1824
- Family Varanoidea incertae sedis
- Family Viperidae Oppel, 1811
- Family Xantusiidae Baird, 1858
- Family Xenodermidae Gray, 1849
- Family Xenopeltidae Bonaparte, 1845
- Family Xenosauridae Cope, 1866
- Genus Aiolosaurus Gao & Norell, 2000 †
- Genus Baabdasaurus Arnold, Azar, Ineich & Nel, 2002 †
- Genus Bharatagama Evans, Prasad & Manhas, 2002 †
- Genus Bothriagenys Nydam, 2002 †
- Genus Conantophis Holman & Harrison, 2000 †
- Genus Cryptovaranoides Whiteside, Chambi-Trowell & Benton, 2022 †
- Genus Ctenomastax Gao & Norell, 2000 †
- Genus Dimekodontosaurus Nydam, 2002 †
- Genus Haasiophis Tchernov, Rieppel, Zaher, Polcyn & Jacobs, 2000 †
- Genus Hongshanxi Dong, Wang, Mou, Zhang & Evans, 2019 †
- Genus Hydrargysaurus Wick & Shiller, 2020 †
- Genus Hymenosaurus Gao & Norell, 2000 †
- Genus Indrasaurus O'Connor, Zheng, Dong, Wang, Wang, Zhang & Zhou, 2019 †
- Genus Jucaraseps Bolet & Evans, 2012 †
- Genus Megachirella Renesto & Posenato, 2003 †
- Genus Messelopython Zaher & Smith, 2020 †
- Genus Moqisaurus Dong, Wang & Evans, 2022 †
- Genus Myrmecodaptria Gao & Norell, 2000 †
- Genus Paleochelco Martinelli, Agnolín & Ezcurra, 2021 †
- Genus Parasaurillus Evans & Searle, 2002 †
- Genus Primaderma Nydam, 2000 †
- Genus Sauripes Lee, Lee, Fiorillo & Lü, 2018 †
- Genus Schillerosaurus Nydam, Chure & Evans, 2013 †
- Genus Temujinia Gao & Norell, 2000 †
- Genus Zapsosaurus Gao & Norell, 2000 †
- Order Synapsida (awaiting allocation)
- Order Synaptosauria (awaiting allocation) †
- Order Testudinata incertae sedis
- Order Testudines
- Order Tetrapodamorpha incertae sedis †
- Order Thalattosauria †
- Order Thalattosuchia †
- Order Thecodontia †
- Order Therapsida †
- Order Theriodontia †
- Order Trilophosauria †
- Order Younginiformes †
- Family Gracilisuchidae Butler, Sullivan, Ezcurra, Liu, Lecuona & Sookias, 2014 †
- Genus Anshunpes Xing, Klein, Lockley, Wu, Benton, Zeng & Romilio, 2020 †
- Genus Antarcticoolithus Legendre, Rubilar-Rogers, Musser, Davis, Otero, Vargas & Clarke, 2020 †
- 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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