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Sauropsida

Taxonomy
Sauropsida was named by Huxley (1864) [The term "Sauropsida" occurs in a footnote. Otherwise the same group (reptiles + birds) is always referred to as "sauroids". ]. It is extant. It was considered monophyletic by Laurin and Reisz (1995).

It was synonymized subjectively with Diapsida by Kuhn (1966).

It was assigned to Amniota by Huxley (1864) and Laurin and Reisz (1995).

Synonymy list
YearName and author
1864Sauropsida Huxley p. 76
1995Sauropsida Laurin and Reisz p. 172

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RankNameAuthor
kingdomAnimalia()
Bilateria
EubilateriaAx 1987
Deuterostomia
phylumChordataHaeckel 1874
subphylumVertebrata
superclassGnathostomata
Osteichthyes()
subclassSarcopterygii()
subclassDipnotetrapodomorpha(Nelson 2006)
RankNameAuthor
subclassTetrapodomorpha()
Tetrapoda
Reptiliomorpha
Anthracosauria
subclassAmphibiosauriaKuhn 1967
Cotylosauria()
Amniota
Sauropsida
Sauropsida

If no rank is listed, the taxon is considered an unranked clade in modern classifications. Ranks may be repeated or presented in the wrong order because authors working on different parts of the classification may disagree about how to rank taxa.

Unr. Sauropsida Huxley 1864
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Fm. †Mesosauridae Baur 1889
+
G. †Brazilosaurus Shikama and Ozaki 1966
+
Brazilosaurus sanpauloensis Shikama and Ozaki 1966
G. †Mesosaurus Gervais 1865
+
Mesosaurus tenuidens Gervais 1865
+
Invalid names: Ditrochosaurus capensis Gürich 1889 [synonym], Mesosaurus brasiliensis Mac Gregor 1908 [synonym]
Invalid names: Ditrochosaurus Gürich 1889 [synonym]
G. †Stereosternum Cope 1885
+
Stereosternum tumidum Cope 1885
Invalid names: Mesosaurus pleurogaster Seeley 1892 [nomen dubium], Noteosaurus Broom 1913 [invalid subgroup], Noteosaurus africanus Broom 1913 [nomen dubium]
Cl. Reptilia Laurenti 1768 [reptile]
+
Unr. Amblyglossae Fitzinger 1843
+
Or. Dendrobatae Wiegmann 1834
+
Invalid names: Pleurodontes Wagler 1830 [empty]
Subcl. Anapsida Williston 1917 [anapsid]
+
Superor. Chelonomorpha Kuhn 1960
+
Or. †Eunotosauria Watson 1917
+
Invalid names: Eunotosauroidea Nopcsa 1928 [empty]
G. †Anhomoiichnium Dozy 1935
+
Anhomoiichnium diversum Schmidt 1959
+
Invalid names: Akropus diversus Schmidt 1959 [synonym]
G. †Apatomerus Williston 1903
+
Apatomerus mirus Williston 1903
Subcl. †Archaeosauria Jaekel 1911
+
Invalid names: Gephyrostegi Jaekel 1911 [empty]
G. †Cunichnoides Hitchcock 1858
+
Cunichnoides marsupialoideus Hitchcock 1858
G. †Dimetropus Romer and Price 1940
+
Dimetropus berea Tilton 1931
Dimetropus latus Heyler and Montenat 1980
Dimetropus leisnerianus Geintiz 1863
+
Invalid names: Ichnium acrodactylum Pabst 1908 [synonym]
Subcl. Diplotremata Hay 1930
+
Invalid names: Eoditremata Hay 1930 [empty]
G. †Dolichobrachium Williston 1904
+
Dolichobrachium gracile Williston 1904
G. †Embolophorus Cope 1878
+
Subcl. Eureptilia Olson 1947 [eureptile]
+
Fm. †Captorhinidae Case 1911
+
G. †Acrodenta Dutuit 1976
+
Acrodenta irerhi Dutuit 1976
G. †Baeotherates May and Cifelli 1998
+
Baeotherates fortsillensis May and Cifelli 1998
G. †Captorhinoides Olson 1951
+
G. †Captorhinus Cope 1896
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Captorhinus aguti Cope 1882
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Invalid names: Bayloria morei Olson 1941 [synonym], Captorhinus aduncus Cope 1896 [synonym], Captorhinus angusticeps Cope 1896 [synonym], Captorhinus isolomus Cope 1896 [synonym], Hypopnous squaliceps Cope 1896 [synonym], Paracaptorhinus neglectus Watson 1954 [synonym]
Captorhinus kierani deBraga et al. 2019
Captorhinus laticeps Williston 1909
+
Invalid names: Labidosaurus oklahomensis Seltin 1959 [synonym]
Captorhinus magnus Kissel et al. 2002
Invalid names: Bayloria Olson 1941 [synonym], Ectocynodon Cope 1878 [invalid subgroup], Eocaptorhinus Heaton 1979 [synonym], Hypopnous Cope 1896 [synonym], Paracaptorhinus Watson 1954 [synonym]
G. †Euconcordia Reisz et al. 2016
+
Euconcordia cunninghami Müller and Reisz 2005
Invalid names: Concordia Müller and Reisz 2005 [replaced]
G. †Helodectes Cope 1880
G. †Labidosaurikos Stovall 1950
+
Labidosaurikos meachami Stovall 1950
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Invalid names: Labidosaurikos barkeri Olson 1954 [synonym]
G. †Labidosauriscus Modesto et al. 2018
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Labidosauriscus richardi Modesto et al. 2018
G. †Labidosaurus Cope 1896
+
Labidosaurus broilii Case 1911
Labidosaurus hamatus Cope 1896
Subfm. †Moradisaurinae de Ricqlès and Taquet 1982
+
G. †Captorhinikos Olson 1954
G. †Gansurhinus Reisz et al. 2011
G. †Gecatogomphius Vjushkov and Chudinov 1957
G. †Hyloidichnus Gilmore 1927
G. †Kahneria Olson 1962
G. †Moradisaurus Taquet 1969
G. †Rothianiscus Kuhn 1961
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Invalid names: Rothia Olson and Beerbower 1953 [replaced]
G. †Opisthodontosaurus Reisz et al. 2015
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Opisthodontosaurus carrolli Reisz et al. 2015
G. †Protocaptorhinus Clark and Carroll 1973
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Protocaptorhinus pricei Clark and Carroll 1973
Invalid names: Pleuristion Case 1902 [nomen dubium], Pleuristion brachycoelous Case 1902 [nomen dubium]
G. †Reiszorhinus Sumida et al. 2010
+
Reiszorhinus olsoni Sumida et al. 2010
G. †Rhiodenticulatus Berman and Reisz 1986
+
Rhiodenticulatus heatoni Berman and Reisz 1986
G. †Romeria Price 1937
+
Romeria prima Clark and Carroll 1973
Romeria texana Price 1937
G. †Saurorictus Modesto and Smith 2001
+
Saurorictus australis Modesto and Smith 2001
Invalid names: Captorhininae Case 1911 [empty], Pariotichidae Cope 1883 [synonym], Riabininus Ivakhnenko 1990 [nomen dubium], Riabininus uralensis Riabinin 1915 [nomen dubium]
Fm. †Protorothyrididae Price 1937
+
G. †Paleothyris Carroll 1969
+
Paleothyris acadiana Carroll 1969
Invalid names: Romeriidae Price 1937 [invalid subgroup]
Unr. Romeriida Gauthier et al. 1988
+
Unr. Diapsida Osborn 1903 [diapsid]
+
G. †Adelosaurus Watson 1914
Unr. †Araeoscelidia Williston 1913
Unr. †Archelosauria Crawford 2015
Unr. Archosauromorpha Huene 1946 [archosauromorph]
G. †Dolerosaurus Butler 2013
Unr. †Drepanosauromorpha Renesto et al. 2010
Unr. Eosuchia Broom 1914
G. †Horaffia Klein and Hagdorn 2014
Or. †Hupehsuchia Carroll and Dong 1991
Unr. †Ichthyosauromorpha Motani et al. 2015
G. †Lanthanolania Modesto and Reisz 2002
G. †Palacrodon Broom 1906
+
Invalid names: Fremouwsaurus Gow 1992 [synonym]
Subor. †Sauropterygia Owen 1859
Fm. †Saurosphargidae Li et al. 2011
G. †Stauromatodon Sobral et al. 2021
Unr. †Thalattosauriformes Nicholls 1999
Invalid names: Diaptosauria Osborn 1903 [empty], Endennasauridae [empty], Fremouwsauridae Gow 1992 [empty], Prodiapsida [empty], Rysosteus Owen 1842 [nomen dubium], Utahdactylus Czerkas and Mickelson 2002 [nomen dubium], Utahdactylus kateae Czerkas and Mickelson 2002 [nomen dubium]
G. †Thuringothyris Boy and Martens 1991
+
Thuringothyris mahlendorffae Boy and Martens 1991
Invalid names: Captorhina Olson 1947 [empty], Parapsida Williston 1917 [empty]
G. Glauconia Gray 1845
G. †Ischyrotherium Leidy 1856
G. †Isocampe Hitchcock 1858
+
Isocampe strata Hitchcock 1858
G. †Kintneria Ryan and Willard 1947
+
Kintneria brunswickii Ryan and Willard 1947
G. †Metamosaurus Cope 1878
+
Metamosaurus fossatus Cope 1878
Or. Monopnoa Fitzinger 1826
+
Invalid names: Nuda Müller [empty]
Subcl. Monozygocrotapha Nopcsa 1928
+
Invalid names: Dranitesauria Nopcsa 1928 [empty], Pelycosauria Cope 1878 [empty]
G. †Onychichnium Dozy 1935
+
Onychichnium escheri Dozy 1935
G. †Oolithes Buckman 1859
+
Oolithes bathonicae Buckman 1859
Oolithes obtusatus Carruthers 1871
Oolithes sphaericus Carruthers 1871
Unr. Pantestudines Joyce et al. 2004
+
G. †Eorhynchochelys Li et al. 2018
+
Eorhynchochelys sinensis Li et al. 2018
G. †Pappochelys Schoch and Sues 2015
+
Pappochelys rosinae Schoch and Sues 2015
Subcl. †Parareptilia Lawrence 1868 [parareptile]
+
Unr. †Bolosauria Kuhn 1959
+
Fm. †Bolosauridae Cope 1878
+
Subfm. †Belebeyinae Ivakhnenko 2001
Subfm. †Bolosaurinae Cope 1878
G. †Eudibamus Berman et al. 2000
Invalid names: Bolosaurus traati Tatarinov 1974 [nomen dubium]
G. †Erpetonyx Modesto et al. 2015
+
Erpetonyx arsenaultorum Modesto et al. 2015
Superor. †Cheloniamorpha Ivakhnenko 1997
+
Or. †Pareiasaurida Ivakhnenko 1997
+
Subor. †Nycteroleterina Ivakhnenko 1997
G. †Sukhonopus Gubin et al. 2003
Invalid names: Pareiasaurina Ivakhnenko 1997 [empty]
G. †Eunotosaurus Seeley 1892
+
Eunotosaurus africanus Seeley 1892
G. †Kinelia Bulanov 2002
+
Kinelia broomi Bulanov 2002
G. †Microleter Tsuji et al. 2010
+
Microleter mckinzieorum Tsuji et al. 2010
Fm. †Millerettidae Romer 1956
+
G. †Broomia Watson 1914
+
Broomia perplexa Watson 1914
G. †Milleretta Broom 1948
+
Milleretta rubidgei Broom 1938
+
Invalid names: Millerettoides platyceps Broom 1948 [synonym], Millerettops kitchingi Broom 1948 [synonym]
Invalid names: Millerettoides Broom 1948 [synonym], Millerettops Broom 1948 [synonym], Millerina Broom 1938 [replaced]
G. †Millerinoides Broom 1940
+
G. †Milleropsis Gow 1972
+
Milleropsis pricei Watson 1957
G. †Millerosaurus Broom 1948
+
Millerosaurus nuffieldi Watson 1957
Millerosaurus ornatus Broom 1948
Invalid names: Nanomilleretta Broom and Robinson 1948 [nomen dubium], Nanomilleretta kitchingi Broom and Robinson 1948 [nomen dubium]
Fm. †Nyctiphruretidae Efremov 1938
+
G. †Abyssomedon MacDougall and Reisz 2014
+
Abyssomedon williamsi MacDougall and Reisz 2014
Subfm. †Nyctiphruretinae Efremov 1938
+
G. †Nyctiboetus Chudinov 1955
G. †Nyctiphruretus Efremov 1938
+
Nyctiphruretus acudens Efremov 1938
Nyctiphruretus optabilis Bulanov 2002
Superfm. †Procolophonoidea Romer 1956
+
Fm. †Owenettidae Broom 1939
+
G. †Barasaurus Piveteau 1955
G. †Candelaria Price 1947
G. †Owenetta Broom 1939
+
Invalid names: Colubrifer Carroll 1982 [synonym]
G. †Saurodektes Modesto et al. 2004
+
Invalid names: Saurodectes Modesto et al. 2003 [replaced]
G. †Pintosaurus Pineiro et al. 2004
+
Pintosaurus magnidentis Pineiro et al. 2004
G. †Procolophonichnium Nopcsa 1923
+
Procolophonichnium haarmuehlensis Holst et al. 1970
Procolophonichnium polonicum Ptaszynski 1990
Procolophonichnium tirolensis Ceoloni et al. 1988
+
Invalid names: Chelichnus tazelwurmi Ceoloni et al. 1988 [synonym], Paradoxichnium radeinensis Ceoloni et al. 1988 [synonym], Prochirotherium permicum Leonardi 1951 [synonym]
Procolophonichnium winterswijkense Demathieu and Oosterink 1983
Invalid names: Contiichnus Citton et al. 2017 [synonym]
Fm. †Procolophonidae Lydekker 1889
+
G. †Acadiella Sues and Baird 1998
G. †Coletta Gow 2000
G. †Contritosaurus Ivakhnenko 1974
G. †Eomurruna Hamley et al. 2021
G. †Estheriophagus Novozhilov 1948
G. †Eumetabolodon Li 1983
G. †Gomphiosauridion Sues and Olsen 1993
G. †Haligonia Sues and Baird 1998
G. †Kitchingnathus Cisneros 2008
G. †Koiloskiosaurus Huene 1911
G. †Lasasaurus Falconnet et al. 2012
Subfm. †Leptopleuroninae Ivakhnenko 1979
G. †Neoprocolophon Young 1957
G. †Oryporan Pinheiro et al. 2021
G. †Pentaedrusaurus Li 1989
Subfm. †Procolophoninae Nopcsa 1928
G. †Procolophonoides Ivakhnenko 1979
G. †Sauropareion Modesto et al. 2001
G. †Smilodonterpeton Skinner et al. 2020
G. †Spondylolestes Broom 1937
G. †Suchonosaurus Tverdochlebova and Ivakhnenko 1994
G. †Teratophon Modesto and Damiani 2003
G. †Thelephon Modesto and Damiani 2003
G. †Thelerpeton Modesto and Damiani 2003
G. †Tichvinskia Chudinov and Vjushkov 1956
+
Invalid names: Burtensia Ivakhnenko 1975 [synonym]
G. †Youngetta Hamley et al. 2020
Invalid names: Paoteodon Chow and Sun 1960 [nomen dubium], Spondylolestidae Ivakhnenko 1979 [invalid subgroup], Thelegnathus Broom 1905 [nomen dubium], Thelegnathus browni Broom 1905 [nomen dubium]
Invalid names: Tichvinskia jugensis Vjushkov and Chudinov 1956 [nomen dubium]
Unr. †Procolophonomorpha Romer 1964
+
Unr. †Ankyramorpha deBraga and Reisz 1996
+
Superfm. †Lanthanosuchoidea Efremov 1940
G. †Australothyris Modesto et al. 2009
+
Australothyris smithi Modesto et al. 2009
Unr. †Nyctiphruretia Lee 1995
+
Fm. †Nycteroleteridae Romer 1956
Unr. †Procolophonia Seeley 1888
+
Unr. †Hallucicrania Lee 1995
G. †Ruhuhuaria Tsuji et al. 2013
G. †Xenodiphyodon Sues and Olsen 1993
Invalid names: Procolophoniformes Lee 1995 [synonym], Testudinomorpha Laurin and Reisz 1995 [empty]
Fm. †Sclerosauridae Nopsca 1923
+
G. †Basileosaurus Wiedersheim 1879
Invalid names: Procolophonida [empty]
Subcl. †Poeciloglyptica Hay 1930
+
Superor. †Catacritosauria Hay 1930
+
Invalid names: Omphalosauria Huene 1923 [empty]
Superor. †Elpidosauria Hay 1930
+
Or. †Sphenacodontomorphi Hay 1930
+
Subor. †Edaphosauriformes Hay 1930
+
Invalid names: Naosauri Jaekel 1910 [replaced]
Invalid names: Caseiformes Hay 1930 [empty], Poliosauriformes Hay 1930 [empty], Sphenacodontiformes Hay 1930 [empty]
Invalid names: Astatoglyptica Hay 1930 [empty]
G. †Polemarchus Hitchcock 1845
+
Polemarchus dananus Hitchcock 1848
+
Invalid names: Palamopus clarki Hitchcock 1858 [synonym]
Polemarchus polemarchius Hitchcock 1837
+
Invalid names: Polemarchus gigas Hitchcock 1845 [synonym]
Invalid names: Eupalamopus Hay 1902 [synonym], Palamopus Hitchcock 1848 [synonym]
Superor. Rhizodonta Bonaparte 1838
+
Invalid names: Emydosaurii Bonaparte 1850 [empty]
Fm. †Rhynchosauroidae Haubold 1966
+
G. †Dromopus Marsh 1894
+
Dromopus agilis Marsh 1894
Dromopus lacertoides Geinitz 1861
+
Invalid names: Eumekichnium gampsodactylum Pabst 1900 [synonym]
Dromopus palmatus Moodie 1929
+
Invalid names: Varanopus didactylus Moodie 1930 [synonym]
Dromopus velox Matthew 1904
Dromopus woodworthi Lull 1920
Invalid names: Eumekichnium Nopcsa 1923 [synonym]
G. †Palmichnus Schmidt 1959
+
Palmichnus lacertoides Ptaszyński and Niedźwiedzki 2004
Palmichnus renisus Schmidt 1959
Palmichnus tambachensis Haubold 1971
G. †Paradoxichnium Müller 1959
+
Paradoxichnium tumlinense Ptaszyński and Niedźwiedzki 2004
G. †Phalangichnus Schmidt 1959
+
Phalangichnus alternans Schmidt 1959
Phalangichnus gagoli Ptaszyński and Niedźwiedzki 2004
Phalangichnus gradzinskii Ptaszyński and Niedźwiedzki 2004
Phalangichnus simulans Schmidt 1959
G. †Sillimanius Hitchcock 1845
+
Sillimanius gracilior Hitchcock 1841
Sillimanius tetradactylus Hitchcock 1836
+
Invalid names: Ornithopus gallinaceus Hitchcock 1845 [synonym]
Invalid names: Ornithopus Hitchcock 1845 [synonym]
Unr. Squamata Oppel 1811 [squamates]
+
Infraor. Amphisbaenia Gray 1844 [worm lizard]
+
Unr. Amphisbaeniformes Longrich et al. 2015
+
Unr. Amphisbaenidae Gray 1865 [worm lizard]
Fm. Bipedidae Taylor 1951
Fm. Blanidae Kearney 2003
G. †Todrasaurus Augé and Rage 2006
Unr. Trogonophidae Gray 1865
Invalid names: Cadeidae Vidal and Hedges 2007 [empty]
Unr. †Chthonophidae Longrich et al. 2015
+
G. †Chthonophis Longrich et al. 2015
Fm. †Crythiosauridae Vanzolini 1951
+
G. †Crythiosaurus Gilmore 1943
G. †Platyrhachis Cope 1873
G. †Hodzhakulia Nessov 1985
+
Hodzhakulia magna Nessov 1985
Fm. †Hyporhinidae Baur 1893
+
G. Hyporhina Baur 1893
Fm. †Oligodontosauridae Estes 1975
+
G. †Oligodontosaurus Gilmore 1942
Fm. †Polyodontobaenidae Folie et al. 2013
+
G. †Camptognathosaurus Folie et al. 2013
G. †Polyodontobaena Folie et al. 2013
Unr. Rhineuroidea Kearney 2003
+
G. Aulura Barbour 1914 [Barbour's worm lizards]
Fm. Rhineuridae Vanzolini 1951
Invalid names: Amphisbaenoidea Gray 1865 [empty], Annulati [synonym], Glyptosaurus walbeckensis Kuhn 1940 [nomen dubium]
Unr. Anguimorpha Fürbringer 1900
+
Unr. Anguiformes Bonaparte 1831
+
Superfm. †Anguioidea Fitzinger 1826
+
Invalid names: Diploglossa Cope 1864 [objective synonym]
G. †Cnodontosaurus Nydam 2013
Infraor. Platynota Baur 1890
Superfm. Scincoidae Hay 1930
G. †Barlochersaurus Daza et al. 2018
+
Barlochersaurus winhtini Daza et al. 2018
Superfm. †Carusioidea Gao and Norell 1998
+
G. †Dalinghosaurus Ji 1998
G. †Chometokadmon Costa 1864
+
+
Invalid names: Lacerta brevicauda Costa 1866 [synonym]
G. †Entomophontes Smith and Gauthier 2013
+
Entomophontes hutchisoni Smith and Gauthier 2013
Entomophontes incrustatus Smith and Gauthier 2013
G. †Merkurosaurus Klembara 2008
+
Merkurosaurus ornatus Klembara 2008
Unr. Monstersauria Norell and Gao 1997
+
G. †Asprosaurus Park et al. 2015
G. †Chianghsia Mo et al. 2012
G. †Estesia Norell et al. 1992
G. †Eurheloderma Hoffstetter 1957
G. †Gobiderma Borsuk-Bialynicka 1984
G. †Lowesaurus Pregill et al. 1986
G. †Morohasaurus Ikeda et al. 2022
G. †Palaeosaniwa Gilmore 1928
+
Invalid names: Megasaurus Gilmore 1928 [synonym]
G. †Paraderma Estes 1964
G. †Primaderma Nydam 2000
Fm. †Necrosauridae Hoffstetter 1943
+
G. †Labrodioctes Gao and Fox 1996
Subfm. †Necrosaurinae Hoffstetter 1943
G. †Necrosaurus Filhol 1876
G. †Proplatynotia Borsuk-Bialynicka 1984
G. †Provaranosaurus Gilmore 1942
Invalid names: Melanosaurinae Gilmore 1928 [empty]
Fm. †Palaeovaranidae Georgalis 2017
+
G. †Eosaniwa Haubold 1977
G. †Palaeovaranus Zittel 1887
G. †Paranecrosaurus Smith and Habersetzer 2021
Fm. †Paravaranidae Borsuk-Bialynicka 1984
+
G. †Paravaranus Borsuk-Bialynicka 1984
G. †Restes Gauthier 1982
+
Restes rugosus Gauthier 1982
+
Invalid names: Exostinus rugosus Gilmore 1942 [objective synonym]
Fm. Xenosauridae Cope 1866
+
G. †Exostinus Cope 1873
+
Invalid names: Harpagosaurus Gilmore 1928 [synonym], Prionosaurus Gilmore 1928 [synonym]
G. †Nordenosaurus Holman 1973
G. †Shestakovia Averianov et al. 2005
Subfm. Xenosaurinae McDowell and Bogert 1954
G. †Xenostius Alifanov 2019
Invalid names: Hodzhakuliidae Alifanov 1993 [empty], Varaniformes Conrad 2008 [empty]
G. †Anhuisaurus Hou 1974
+
G. †Anqingosaurus Hou 1976
+
G. †Ardeosaurus von Meyer 1860
+
Ardeosaurus brevipes Meyer 1909
G. †Asagaolacerta Evans and Matusmoto 2015
+
Asagaolacerta tricuspidens Evans and Matusmoto 2015
G. †Bavarisaurus Hoffstetter 1953
+
G. †Changjiangosaurus Hou 1976
+
G. †Cuencasaurus Richter 1994
+
Cuencasaurus estesi Richter 1994
Fm. Dibamidae Boulenger 1884
+
G. Anelytropis Cope 1885 [Mexican blind lizards]
+
Anelytropis papillosus Cope 1885 [Mexican blind lizard]
G. Dibamus Dumeril and Bibron 1839 [Blind skinks]
+
Dibamus novaeguinea Dumeril and Bibron 1839 [New Guinea blind skink]
G. †Hoeckosaurus Čerňanský 2019
+
Hoeckosaurus mongoliensis Čerňanský 2019
G. †Eichstaettisaurus Kuhn 1958
+
Eichstaettisaurus gouldi Evans et al. 2004
Invalid names: Broilisaurus Hoffstetter 1953 [synonym]
Unr. Episquamata Pyron et al. 2013
+
Superfm. Lacertoidea Camp 1923
+
Fm. Lacertidae Bonaparte 1831
Unr. Lacertiformes Estes et al. 1988
G. †Pachygenys Gao and Cheng 1999
G. †Purbicella Evans et al. 2012
G. †Rhynchosauroides Maidwell 1911
+
Invalid names: Akropus Lilienstern 1939 [synonym], Eurichnus Lull 1942 [synonym], Ganasauripus Valentini et al. 2007 [synonym], Rhynchocephalichnus Huene 1941 [synonym]
Unr. Teiioidea Estes et al. 1988
Unr. Toxicofera Vidal and Hedges 2005
+
Infraor. Iguania Cuvier 1817
Invalid names: Mosasauria [empty]
Invalid names: Laterata Vidal and Hedges 2005 [empty]
+
Infraor. Gekkota Cuvier 1817
+
Fm. †Ardeosauridae Camp 1923
G. †Dollogekko Čerňanský et al. 2022
Fm. Eublepharidae Boulenger 1883
Fm. Gekkonidae Gray 1825 [gecko]
Superfm. Gekkonoidea
Fm. Gekkoolithidae Hirsch 1996
G. †Hoburogekko Alifanov 1989
Fm. Phyllodactylidae Gamble 2008
Superfm. Pygopodoidea
Invalid names: Bavarisauridae Kuhn 1961 [empty], Nyctisaura Gray [synonym], Pygopodidae Boulenger 1884 [empty], Xantusioidea Camp 1923 [empty]
G. †Norellius Conrad and Daza 2015
+
Norellius nyctisaurops Conrad and Daza 2015
G. †Hakuseps Evans and Matusmoto 2015
+
Hakuseps imberis Evans and Matusmoto 2015
G. †Hongshanxi Dong et al. 2019
+
Hongshanxi xiei Dong et al. 2019
G. †Hoyalacerta Evans and Barbadillo 1999
+
Hoyalacerta sanzi Evans and Barbadillo 1999
G. †Huehuecuetzpalli Reynoso 1998
+
Huehuecuetzpalli mixtecus Reynoso 1998
Unr. †Iguanomorpha Sukhanov 1961
+
Unr. †Chamaeleontiformes Conrad 2008
+
Unr. †Acrodonta Cope 1864
G. †Ctenomastax Gao and Norell 2000
Fm. †Priscagamidae Borsuk-Bialynicka and Moody 1984
G. †Isodontosaurus Gilmore 1943
+
Isodontosaurus gracilis Gilmore 1943
G. †Magnuviator DeMar Jr et al. 2017
+
Magnuviator ovimonsensis DeMar Jr et al. 2017
G. †Pariguana Longrich et al. 2012
+
Pariguana lancensis Longrich et al. 2012
Unr. Pleurodonta Cope 1864
+
G. †Bifurcodentodon Čerňanský et al. 2022
G. †Caeruleodentatus Scarpetta 2021
Fm. Corytophanidae Fitzinger 1843 [casque-head lizard]
Fm. Crotaphytidae Frost and Etheridge 1989
Unr. †Gobiguania Conrad and Norell 2007
Fm. †Hoplocercidae Frost and Etheridge 1989
G. †Igua Borsuk-Bialynicka and Alifanov 1991
Fm. Iguanidae Oppel 1811
G. †Kopidosaurus Scarpetta 2020
Fm. †Phrynosomatidae Fitzinger 1843
Fm. Polychrotidae Macey et al. 1997
Fm. Tropiduridae Bell 1843 [ground lizard]
Infraor. Typhlophthalmi Cope 1864
Invalid names: Erichosaurus bombimaxila Ameghino 1899 [nomen dubium], Erichosaurus debilis Ameghino 1899 [nomen dubium], Erichosaurus diminutus Ameghino 1899 [nomen dubium], Thecaglossa Wagler [empty]
G. †Polrussia Borsuk-Bialynicka and Alifanov 1991
+
Polrussia mongoliensis Borsuk-Bialynicka and Alifanov 1991
Unr. †Temujiniidae Gauthier et al. 2012
+
G. †Saichangurvel Conrad and Norell 2007
G. †Temujinia Gao and Norell 2000
G. †Zapsosaurus Gao and Norell 2000
+
Zapsosaurus sceliphros Gao and Norell 2000
G. †Jucaraseps Bolet and Evans 2012
+
Jucaraseps grandipes Bolet and Evans 2012
G. †Kuroyuriella Evans and Matusmoto 2015
+
Kuroyuriella mikikoi Evans and Matusmoto 2015
Subor. Lacertilia Owen 1842 [lizard]
+
G. †Araeosaurus Seeley 1881
+
Araeosaurus gracilis Seeley 1881
G. †Costasaurus Estes 1983
+
Costasaurus rusconi Costa 1851
+
Invalid names: Polysemia apennina Costa 1864 [objective synonym]
G. †Dicarlesia Huene 1932
+
Dicarlesia incognita Huene 1931
Invalid names: Carlesia Huene 1931 [replaced]
G. †Durotrigia Hoffstetter 1967
+
Durotrigia triconidens Hoffstetter 1967
G. †Francosaurophis Kuhn 1959
+
Invalid names: Saurophis Brunner 1957 [replaced]
Superfm. Kionocrania Stannius 1856
+
G. Euprepis Wagler 1830
G. †Oxia Nessov 1985
+
Oxia karakalpakensis Nessov 1985
G. †Paraprionosaurus Gilmore 1938
+
Tr. †Repentia
+
G. †Raphiosaurus Owen 1842
G. †Sauromorus Pomel 1953
G. †Tarratosaurus Broschinksi and Sigogneau-Russell 1996
+
Tarratosaurus anoualensis Broschinksi and Sigogneau-Russell 1996
G. †Teilhardosaurus Shikama 1947
+
G. Tupinambis Daudin 1802 [tegu]
+
Tupinambis brevirostris Rovereto 1914
Tupinambis multidentatus Rovereto 1914
Tupinambis prerufescens Rovereto 1914
Tupinambis preteguixin Rovereto 1914
Tupinambis rufescens Gunther 1871 [Red tegu]
Tupinambis teguixin Linnaeus 1758
Invalid names: Diasemosaurus Ameghino 1898 [synonym], Diasemosaurus occidentalis Ameghino 1893 [nomen dubium], Dibolosodon Ameghino 1898 [synonym], Dibolosodon typicus Ameghino 1893 [nomen dubium]
Invalid names: Changjiangidae Hou 1976 [empty], Cremastosaurus Cope 1873 [nomen dubium], Cremastosaurus rhambastes Cope 1884 [nomen dubium], Diacium Cope 1873 [nomen dubium], Iguanavus Marsh 1872 [nomen dubium], Natantia Owen 1851 [empty], Ophiosauri Cope 1864 [empty], Rhiptoglossa Wiegmann 1834 [empty]
G. †Lamiasaura Longrich et al. 2013
+
Lamiasaura ferox Longrich et al. 2013
+
Invalid names: Lamiasaurus ferox Longrich et al. 2012 [replaced]
Invalid names: Lamiasaurus Longrich et al. 2012 [replaced]
G. †Liushusaurus Evans and Wang 2010
+
Liushusaurus acanthocaudata Evans and Wang 2010
Fm. †Macrocnemidae Kuhn 1946
+
G. †Megacnemus Huene 1954
+
Megacnemus grandis Huene 1955
G. †Megachirella Renesto and Posenato 2003
+
Megachirella wachtleri Renesto and Posenato 2003
G. †Moqisaurus Dong et al. 2023
+
Moqisaurus pulchrum Dong et al. 2023
Fm. †Mosasauridae Gervais 1852 [mosasaur]
+
G. †Compressidens Dollo 1924
+
Compressidens belgicus Woodward 1891
G. †Haasiasaurus Polcyn et al. 2003
+
Haasiasaurus gittelmani Polcyn et al. 1999
Invalid names: Haasia Polcyn et al. 1999 [replaced]
Unr. †Halisaurinae Bardet et al. 2005
+
Unr. †Halisaurini Longrich et al. 2021
Unr. †Pluridensini Longrich et al. 2021
Subfm. †Mosasaurinae Gervais 1853
+
G. †Clidastes Cope 1868
+
Invalid names: Edestosaurus Marsh 1871 [synonym]
G. †Dallasaurus Bell and Polcyn 2005
Tr. †Globidensini Russell 1967
G. †Gnathomortis Lively 2020
G. †Igdamanosaurus Lingham-Soliar 1991
G. †Jormungandr Zietlow et al. 2023
G. †Kourisodon Nicholls and Meckert 2002
G. †Leiodon Owen 1842
G. †Megapterygius Konishi et al. 2023
G. †Moanasaurus Wiffen 1980
Tr. †Mosasaurini Russell 1967
G. †Mosasaurus Parkinson 1822
+
Invalid names: Amphekepubis Mehl 1930 [synonym], Baseodon Leidy 1865 [synonym], Batrachiosaurus Harlan 1839 [synonym], Batrachotherium Harlan 1839 [synonym], Drepanodon Leidy 1861 [synonym], Lesticodus Leidy 1861 [synonym], Macrosaurus Owen 1849 [synonym], Nectoportheus Cope 1868 [synonym], Pterycollosaurus Dollo 1882 [synonym]
G. †Plesiotylosaurus Camp 1942
G. †Polygonodon Leidy 1856
Unr. †Prognathodontini Russell 1967
G. †Rikisaurus Wiffen 1990
G. †Stelladens Longrich et al. 2023
G. †Xenodens Longrich et al. 2021
Invalid names: Globindensini Bell 1997 [empty], Leiodontini Lingham-Soliar 1995 [empty], Plotosaurini Russell 1967 [empty]
G. †Prognathosaurus Dollo 1889
Unr. †Russellosaurina Bell 1997
+
G. †Angolasaurus Antunes 1964
Subfm. †Plioplatecarpinae Dollo 1884
Invalid names: Platecarpus ptychodus Arambourg 1952 [nomen dubium]
Subfm. †Tylosaurinae Wiliston 1895
+
G. †Hainosaurus Dollo 1885
G. †Kaikaifilu Otero et al. 2017
G. †Taniwhasaurus Hector 1874
+
Invalid names: Lakumasaurus Novas et al. 2002 [synonym]
G. †Tylosaurus Marsh 1872
+
Invalid names: Rhamphosaurus Cope 1872 [replaced], Rhinosaurus Marsh 1872 [replaced]
Invalid names: Hainosaurus lonzeensis Dollo 1904 [nomen dubium]
Subfm. †Yaguarasaurinae Palci et al. 2013
+
G. †Romeosaurus Palci et al. 2013
G. †Russellosaurus Polcyn and Bell 2005
Invalid names: Amphorosteus Gibbes 1851 [nomen vanum], Amphorosteus brumbyi Gibbes 1851 [nomen vanum], Clidastes iguanavus Cope 1868 [nomen dubium], Clidastidae Cope 1869 [synonym], Edestosauridae Marsh 1876 [synonym], Globidensidae Dollo 1924 [synonym], Globidentinae [empty], Halisauromorpha Bell and Polcyn 2005 [empty], Liodon congrops Cope 1870 [nomen vanum], Mosasaurus crassidens Marsh 1870 [nomen dubium], Mosasaurus mitchillii DeKay 1830 [nomen vanum], Mosasaurus platyodon Sauvage 1873 [nomen dubium], Platecarpinae Williston 1897 [empty], Tylosaurus capensis Broom 1912 [nomen dubium]
Superfm. †Mosasauroidea
+
Fm. †Aigialosauridae Kramberger 1892
+
G. †Aigialosaurus Kramberger 1892
G. †Carentonosaurus Rage and Néraudeau 2004
G. †Carsosaurus Kornhuber 1893
G. †Eidolosaurus Nopcsa 1923
G. †Mesoleptos Cornalia and Chiozza 1852
G. †Opetiosaurus Kornhuber 1902
G. †Proaigialosaurus Kuhn 1958
Invalid names: Aigialosaurus novaki Kramberger 1892 [nomen dubium]
G. †Komensaurus Caldwell and Palci 2007
+
Komensaurus carrolli Caldwell and Palci 2007
G. †Portunatasaurus Campbell Mekarski et al. 2019
+
Portunatasaurus krambergeri Campbell Mekarski et al. 2019
Subfm. †Tethysaurinae Makádi et al. 2012
+
G. †Pannoniasaurus Makádi et al. 2012
G. †Tethysaurus Bardet et al. 2003
G. †Vallecillosaurus Smith and Buchy 2008
+
Vallecillosaurus donrobertoi Smith and Buchy 2008
Invalid names: Globidens timorensis Huene 1935 [nomen vanum], Ophidiomorpha Palci and Caldwell 2007 [synonym]
G. †Oculudentavis Xing et al. 2020
+
Oculudentavis khaungraae Xing et al. 2020
G. †Olindalacerta Evans and Yabumoto 1998
+
Olindalacerta brasiliensis Evans and Yabumoto 1998
Subor. Ophidia Latreille 1804 [snake]
+
+
Invalid names: Amblycephalidae [empty]
Subor. Asinea Müller
+
Infraor. Peropoda Müller
Superfm. Boaeformia
+
Invalid names: Ilysiidae [empty]
G. †Haasiophis Tchernov et al. 2000
+
Haasiophis terrasanctus Tchernov et al. 2000
G. †Najash Apestiguía and Zaher 2006
+
Najash rionegrina Apestiguía and Zaher 2006
G. †Norisophis Klein et al. 2017
+
Norisophis begaa Klein et al. 2017
G. †Sanajeh Wilson et al. 2010
+
Sanajeh indicus Wilson et al. 2010
G. †Seismophis Hsiou et al. 2013
+
Seismophis septentrionalis Hsiou et al. 2013
Unr. Serpentes Linnaeus 1758 [snake]
+
Infraor. Alethinophidia Nopcsa 1923
G. †Cheilophis Gilmore 1938
Infraor. †Cholophidia Nopcsa 1923
Fm. Colubridae Oppel 1811 [colubrid snake]
G. †Diablophis Caldwell et al. 2015
G. †Dinilysia Woodward 1901
Fm. Dipsadidae Bonaparte 1838
G. †Eophis Caldwell et al. 2015
G. †Goinophis Holman 1976
G. Hoplocephalus Wagler 1830
G. †Lunaophis Albino et al. 2016
Fm. †Madtsoiidae Hoffstetter 1961
G. Ophidium Linnaeus 1758
Fm. †Palaeophiidae Lydekker 1888
G. †Portugalophis Caldwell et al. 2015 [snake]
G. Pseudonaja Günther 1858
Superfm. †Pythonoidea Fitzinger 1826
Infraor. Scolecophidia Duméril and Bibron 1844
G. †Tomodon Duméril 1853
G. †Xiaophis Xing et al. 2018
Invalid names: Botrophis de Rochebrune 1880 [nomen dubium], Coluber steinheimensis Fraas 1870 [nomen dubium], Coniophis Marsh 1892 [nomen dubium], Coniophis cosgriffi Armstrong-Ziegler 1978 [nomen dubium], Coniophis dabiebus Rage and Werner 1999 [nomen dubium], Coniophis precedens Marsh 1892 [nomen dubium], Dinilysiidae Romer 1956 [empty], Hoffstetterella Rage 1998 [nomen dubium], Hoffstetterella brasiliensis Rage 1998 [nomen dubium], Natricidae Bonaparte 1838 [empty], Ophidion Pomel 1853 [nomen dubium], Ophidioniscus Pomel 1853 [nomen dubium], Ophidium Burmeister 1885 [nomen dubium]
+
G. †Simoliophis Sauvage 1880
Superfm. Solenoglypha
+
Invalid names: Atractaspididae Günther 1858 [empty], Causidae Cope 1859 [empty]
Invalid names: Angiostomata Stannius 1856 [empty], Colubriformia [empty], Coniophidae Hoffstetter 1955 [empty], Psammophidae [empty], Tortricina Müller [empty]
G. †Oxiella Evans 1998
+
Oxiella tenuis Evans 1998
G. †Paleochelco Martinelli et al. 2021
+
Paleochelco occultato Martinelli et al. 2021
Unr. †Pangekkota Bauer 2020
+
G. †Bauersaurus Čerňanský et al. 2023
+
Bauersaurus cosensis Čerňanský et al. 2023
G. †Paraplacosauriops Auge and Sullivan 2006
+
G. †Parasaurillus Evans and Searle 2002
+
Parasaurillus pseudobtusus Evans and Searle 2002
G. †Parviraptor Evans 1994
+
Parviraptor estesi Evans 1994
G. †Pseudosaurillus Hoffstetter 1967
+
Pseudosaurillus becklesi Hoffstetter 1967
Unr. †Pythonomorpha Cope 1869
+
Unr. †Dolichosauridae Gervais 1852
+
G. †Acteosaurus von Meyer 1860
G. †Adriosaurus Seeley 1881
G. †Aphanizocnemus Dal Sasso and Pinna 1997
G. †Coniasaurus Owen 1850
G. †Dolichosaurus Owen 1850
G. †Pontosaurus Kramberger 1892
G. †Primitivus Paparella et al. 2018
G. †Tetrapodophis Martill et al. 2015
Invalid names: Dolichosauri Boulenger 1893 [empty]
G. †Sauripes Lee et al. 2018
+
Sauripes hadongensis Lee et al. 2018
G. †Scandensia Evans and Barbadillo 1998
+
Scandensia ciervensis Evans and Barbadillo 1998
G. †Schillerosaurus Nydam et al. 2013
+
Schillerosaurus utahensis Nydam et al. 2013
+
Invalid names: Schilleria utahensis Evans and Chure 1999 [replaced]
Invalid names: Schilleria Evans and Chure 1999 [replaced]
Unr. Scincogekkonomorpha Sukhanov 1961
+
G. †Pedrerasaurus Bolet and Evans 2010
+
Pedrerasaurus latifrontalis Bolet and Evans 2010
Superfm. †Scincoidea Oppel 1811
+
G. †Carusia Borsuk-Bialynicka 1987
+
Carusia intermedia Borsuk-Bialynicka 1985
Invalid names: Carolina Borsuk-Bialynicka 1985 [replaced]
Fm. Cordylidae Gray 1837 [spinytail lizard]
+
G. †Bavaricordylus Kosma 2004
Subfm. Cordylinae Mertens 1937
G. †Eocordyla Augé 2005
G. †Konkasaurus Krause et al. 2003
G. †Palaeocordylus Roček 1984
Subfm. Platysaurinae Stanley et al. 2011
G. †Pseudolacerta De Stefano 1903
Invalid names: Zonuridae Gray 1838 [synonym]
Unr. †Cordyliformes Fitzinger 1826
+
G. †Deccansaurus Yadav et al. 2023
G. †Dakotaseps Nydam 2014
+
Dakotaseps gillettorum Nydam 2013
Invalid names: Dakotasaurus Nydam 2013 [replaced]
G. †Dimekodontosaurus Nydam 2002
+
G. †Eoxanta Borsuk-Bialynicka 1988
+
Eoxanta lacertifrons Borsuk-Bialynicka 1988
G. Estescincosaurus Sullivan 1997
+
Estescincosaurus cooki Estes 1964
+
G. Feylinia Gray 1845 [feylinias]
G. †Foliesaurus Auge and Smith 2009
+
Foliesaurus boutersemensis Auge and Smith 2009
Fm. Gerrhosauridae Boulenger 1885 [plated lizard]
+
G. Gerrhosaurus Wiegmann 1828
G. Zonosaurus Boulenger 1887 [zonosaur]
G. †Globaura Borsuk-Bialynicka 1988
+
Globaura venusta Borsuk-Bialynicka 1988
G. †Hymenosaurus Gao and Norell 2000
+
Hymenosaurus clarki Gao and Norell 2000
G. †Myrmecodaptria Gao and Norell 2000
+
Myrmecodaptria microphagosa Gao and Norell 2000
G. †Ornatocephalus Weber 2004
+
Fm. †Paramacellodidae Estes 1983
+
G. †Atokasaurus Nydam and Cifelli 2002
G. †Becklesius Estes 1983
G. †Hypostylos Wick and Shiller, II 2020
G. †Ilekia Averianov et al. 2005
G. †Mimobecklesisaurus Li 1985
G. †Naimanosaurus Alifanov 2019
G. †Neokotus Souza Bittencourt et al. 2020
G. †Paramacellodus Hoffstetter 1967
G. †Saurillodon Estes 1983
G. †Saurillus Owen 1855
G. †Sciroseps Suarez et al. 2021
G. †Sharovisaurus Hecht and Hecht 1984
G. †Parmeosaurus Gao and Norell 2000
+
Parmeosaurus scutatus Gao and Norell 2000
G. †Pyrenasaurus Bolet and Auge 2014
+
Pyrenasaurus evansae Bolet and Auge 2014
Fm. Scincidae Gray 1825 [skink]
+
G. Acontias Cuvier 1817 [Lance skinks]
G. †Aethesia Hutchinson and Scanlon 2009
G. †Aocnodromeus Gao and Fox 1996
G. †Axonoscincus Augé 2003
G. †Ayalasaurus Augé 2005
G. †Berruva Augé 2005
G. Corucia Gray 1855 [Solomon Island skinks]
G. Eugongylus Fitzinger 1843
G. †Gekkomimus Bolet et al. 2015
G. Lygosoma Hardwicke and Gray 1828 [writhing skink]
Subfm. Lygosominae Mittleman 1952
G. Oligosoma Girard
G. Ophiomorus Duméril and Bibron 1839
G. †Orthoscincus Augé 2005
G. †Orthrioscincus Gao and Fox 1996
G. Parotosaurus Boulenger 1914
G. †Penemabuya Gao and Fox 1996
G. Plestiodon Dumeril and Bibron 1839 [skink]
G. †Sauriscus Estes 1964
Subfm. Scincinae Gray 1825
G. Sphenomorphus Fitzinger 1842 [common skink]
G. Tiliqua Gray 1825
G. Trachylepis Fitzinger 1843
G. Verticaria Cope
Invalid names: Egerniinae Welch 1982 [empty], Feylininae Camp 1923 [empty]
G. †Scincoideus Folie et al. 2005
+
Scincoideus grassator Smith and Gauthier 2013
Scincoideus haininensis Folie et al. 2005
G. †Tepexisaurus Reynoso and Callison 2000
+
Tepexisaurus tepexii Reynoso and Callison 2000
G. †Webbsaurus Nydam 2013
+
Webbsaurus lofgreni Nydam 2013
Fm. Xantusiidae Baird 1858 [night lizard]
+
G. †Catactegenys Nydam et al. 2013
G. Cricosaura Gundlach and Peters 1863 [Cuban night lizards]
G. Klauberina Cope 1883 [Island night lizards]
G. Lepidophyma Duméril 1851 [tropical night lizard]
+
Invalid names: Gaigeia Smith 1939 [synonym], Impensodens Langebartel 1953 [synonym]
G. †Palaeoxantusia Hecht 1956
G. †Palepidophyma Smith and Gauthier 2013
G. †Paracontogenys Schatzinger 1975
G. Xantusia Baird 1859 [night lizard]
Unr. Scincomorpha Camp 1923
+
G. †Apsgnathus Nydam et al. 2013
+
Apsgnathus triptodon Nydam et al. 2013
G. †Balnealacerta Evans 1998
+
G. †Becklesisaurus Hoffstetter 1967
G. †Bellairsia Evans 1998
+
Bellairsia gracilis Evans 1998
G. †Bothriagenys Nydam 2002
+
Bothriagenys flectomendax Wick and Shiller, II 2020
Bothriagenys mysterion Nydam 2002
G. †Calanguban Simões et al. 2015
+
Calanguban alamoi Simões et al. 2015
Fm. †Carusiidae Borsuk-Bialynicka 1987
+
G. †Shinisauroides Borsuk-Bialynicka 1985
Invalid names: Carolinidae Borsuk-Bialynicka 1985 [replaced]
G. †Chromatogenys Makadi and Nydam 2015
+
Chromatogenys tiliquoides Makadi and Nydam 2015
Fm. †Contogeniidae Nydam and Fitzpatrick 2009
+
G. †Palaeoscincosaurus Sullivan and Lucas 1996
G. †Utahgenys Nydam and Fitzpatrick 2009
Superfm. Cordyloidea Fitzinger 1826
+
Invalid names: Zonuroidea [synonym]
Fm. †Eoxantidae Alifanov 1993
+
G. †Palaeoxanta Alifanov 2019
Fm. †Gilmoreteiidae Langer 1998
+
G. †Yechilacerta Xing et al. 2023
Fm. †Globauridae Longrich et al. 2012
+
G. †Contogenys Estes 1969
G. †Khereidia Alifanov 2019
G. †Hugueneysaurus Augé 2005
+
G. †Kleskunsaurus Nydam et al. 2010
+
Kleskunsaurus grandeprairiensis Nydam et al. 2010
G. †Lonchisaurus Longrich et al. 2012
+
Lonchisaurus trichurus Longrich et al. 2012
G. †Monocnemodon Nydam 2013
+
Monocnemodon syphakos Nydam 2013
Unr. †Polyglyphanodontia Alifanov 2000
+
Unr. †Borioteiioidea Nydam et al. 2007
G. †Obamadon Longrich et al. 2012
Fm. †Polyglyphanodontidae Gilmore 1942
+
Invalid names: Adamisauridae Sulimski 1972 [synonym]
Fm. †Slavoiidae Alifanov 1993
+
G. †Slavoia Sulimski 1984
Invalid names: Leptoglossa [synonym]
Unr. †Scleroglossa Estes et al. 1988
+
Subor. †Autarchoglossa Wagler 1830
+
G. †Baabdasaurus Arnold et al. 2002
Unr. †Evansauria Conrad 2008
+
G. †Tijubina Bonfim Júnior and Marques 1997
G. †Indrasaurus O'Connor et al. 2019
+
Indrasaurus wangi O'Connor et al. 2019
G. †Liaoningolacerta Ji 2005
+
G. †Sakurasaurus Evans and Manabe 1999
+
Sakurasaurus shokawensis Evans and Manabe 1999
G. †Tedorosaurus Shikama 1967
+
Tedorosaurus asuwaensis Shikama 1967
Fm. †Trachelosauridae Broili 1917
+
G. †Trachelosaurus Broili and Fischer 1917
+
Trachelosaurus fischeri Broili and Fischer 1917
G. †Yabeinosaurus Endo and Shikama 1942
+
Yabeinosaurus bicuspidens Dong et al. 2017
Yabeinosaurus robustus Dong et al. 2017
Invalid names: Yabeinosaurus tenuis Endo and Shikama 1942 [nomen dubium]
Invalid names: Ameivoidea Fitzinger 1826 [empty], Araeoscelomorphi Hay 1930 [empty], Draconoidea Fitzinger 1826 [empty], Haplodontosaurus Gilmore 1942 [nomen dubium], Harpagosaurus excedens Gilmore 1928 [nomen dubium], Iguana haueri Meyer 1842 [nomen dubium], Lacertibaenia Vidal and Hedges [empty], Paikasisaurus Yadagiri 1986 [nomen dubium], Palaeophidae [empty], Panscincoidea Brownstein et al. 2022 [empty], Panxantusiidae Gauthier et al. 2012 [empty], Panxenosaurus Smith and Gauthier 2013 [empty], Thalattosauromorphi Hay 1930 [empty], Xestops gracilis Marsh 1872 [nomen dubium], Yabeinosaurus youngi Hoffstetter 1964 [nomen dubium], Zanclodontidae Marsh 1882 [empty]
G. †Steropoides Hitchcock 1845
+
Steropoides divaricatus Hitchcock 1837
+
Invalid names: Ornithopus loripes Hitchcock 1848 [synonym], Tridentipes insignis Hitchcock 1858 [synonym]
Steropoides diversus Hitchcock 1836
+
Invalid names: Tridentipes elegans Hitchcock 1841 [synonym]
Steropoides infelix Hay 1902
+
Invalid names: Tridentipes elegantior Hitchcock 1841 [synonym]
Steropoides ingens Hitchcock 1836
+
Invalid names: Ornithoidichnites danae Hitchcock 1844 [synonym], Sillimanius adamsanus Hitchcock 1845 [synonym]
Steropoides uncus Hitchcock 1858
Invalid names: Steropezoum Hitchcock 1848 [synonym], Tridentipes Hitchcock 1858 [synonym]
Unr. †Streptosauria Cope 1869
+
G. †Crymocetus Romer 1966
Unr. Testudinata Oppel 1811 [turtle]
+
G. †Amblypus Hitchcock 1858
+
Amblypus dextratus Hitchcock 1858
G. †Ancyropus Hitchcock 1845
+
Ancyropus heteroclitus Hitchcock 1841
+
Invalid names: Sauroidichnites jacksoni Hitchcock 1841 [synonym]
Fm. †Australochelyidae Gaffney and Kitching 1994
+
G. †Waluchelys Sterli et al. 2020
+
Waluchelys cavitesta Sterli et al. 2020
G. †Australochelys Gaffney and Kitching 1994
+
Australochelys africanus Gaffney and Kitching 1994
G. †Chengyuchelys Young and Chow 1953
+
Chengyuchelys baenoides Young and Chow 1953
Chengyuchelys latimarginalis Young and Chow 1953
G. †Chinlechelys Joyce et al. 2009
G. †Emydhipus Fuentes Vidarte et al. 2003
G. †Helcura Hitchcock 1848
+
Helcura anguinea Hitchcock 1858
Helcura caudata Hitchcock 1858
Helcura littoralis Hitchcock 1848
Helcura surgens Hitchcock 1858
Unr. †Helochelydridae Nopcsa 1928
+
G. †Aragochersis Perez-Garcia et al. 2019
+
Aragochersis lignitesta Perez-Garcia et al. 2019
G. †Helochelydra Nopcsa 1928
+
Helochelydra anglica Lydekker 1889
Helochelydra bakewelli Mantell 1833
Helochelydra nopcsai Lapparent de Broin and Murelaga 1999
G. †Helochelys von Meyer 1854
+
Helochelys danubina von Meyer 1854
G. †Naomichelys Hay 1908
+
G. †Plastremys Owen 1881
+
Plastremys lata Owen 1881
Plastremys rutteri Andrews 1920
Subfm. †Solemydinae Tong et al. 2023
+
G. †Solemys Lapparent de Broin and Murelaga 1996
G. †Trachydermochelys Seeley 1869
+
G. †Tretosternon Owen 1842
Invalid names: Solemydidae Lapparent de Broin and Murelaga 1996 [objective synonym]
G. †Kallokibotion Nopcsa 1923
+
Kallokibotion bajazidi Nopcsa 1923
+
Invalid names: Kallokibotion magnificum Nopcsa 1923 [synonym], Thalassodromeus sebesensis Grellet-Tinner and Codrea 2015 [synonym]
Unr. †Mesochelydia Joyce 2017
+
G. †Condorchelys Sterli 2008
+
Condorchelys antiqua Sterli 2008
G. †Eileanchelys Anquetin et al. 2009
+
Eileanchelys waldmani Anquetin et al. 2009
G. †Heckerochelys Sukhanov 2006
+
Heckerochelys romani Sukhanov 2006
G. †Indochelys Datta et al. 2000
+
Indochelys spatulata Datta et al. 2000
G. †Kayentachelys Gaffney et al. 1987
+
Kayentachelys aprix Gaffney et al. 1987
G. †Palaeochersis Rougier et al. 1995
+
Palaeochersis talampayensis Rougier et al. 1995
Unr. †Paracryptodira Gaffney 1975
+
G. †Arundelemys Lipka et al. 2006
+
Arundelemys dardeni Lipka et al. 2006
Fm. †Baenidae Cope 1882
+
Unr. †Baenodda Gaffney and Meylan 1988
G. †Edowa Adrian et al. 2023
G. †Eubaena Hay 1908
G. †Gehennachelys Adrian et al. 2023
G. †Hayemys Gaffney 1972
G. †Lakotemys Joyce et al. 2020
G. †Neurankylus Lambe 1902
+
Invalid names: Charitemys Hay 1908 [synonym]
G. †Peckemys Lyson and Joyce 2009
G. †Probaena Hay 1903
G. †Protobaena Joyce and Lyson 2015
G. †Stygiochelys Gaffney and Hiatt 1971
G. †Thescelus Hay 1908
G. †Trinitichelys Gaffney 1972
Invalid names: Baena platyplastra Gilmore 1915 [nomen dubium], Baeninae Cope 1882 [empty], Hayemydinae Gaffney 1972 [empty], Thescelus hemispherica Gilmore 1935 [nomen dubium], Trinitychelyinae Gaffney 1972 [empty]
Superfm. †Baenoidea
+
Invalid names: Eubaenidae [empty], Neurankylidae [empty]
Fm. †Compsemydidae Pérez-García et al. 2015
+
G. †Berruchelus Pérez-García 2012
G. †Peltochelys Dollo 1884
G. †Tongemys Joyce et al. 2022
G. †Compsemys Leidy 1856
+
Compsemys victa Leidy 1856
+
Invalid names: Compsemys parva Hay 1910 [synonym], Compsemys puercensis Gilmore 1919 [synonym], Compsemys torrejonensis Gilmore 1919 [synonym], Compsemys vafer Hay 1910 [synonym]
Invalid names: Emys obscurus Leidy 1856 [nomen dubium], Glyptops depressus Hay 1908 [nomen dubium]
Fm. †Pleurosternidae Cope 1868
+
G. †Ballerstedtia Karl et al. 2012
G. †Desmemys Wegner 1911
G. †Dinochelys Gaffney 1979
G. †Dorsetochelys Evans and Kemp 1976
G. †Glyptops Marsh 1890
G. †Pleurosternon Owen 1853
+
Invalid names: Digerrhum Cope 1870 [synonym], Mesochelys Evans and Kemp 1975 [synonym]
G. †Riodevemys Pérez-García et al. 2015
G. †Selenemys Pérez-García and Ortega 2011
G. †Toremys Pérez-García et al. 2015
G. †Uluops Carpenter and Bakker 1990
Invalid names: Desmemydinae Nopcsa 1928 [empty]
Invalid names: Desmemys bertelmanni Wegner 1911 [nomen dubium], Glyptops caelatus Hay 1908 [nomen dubium], Glyptops pervicax Hay 1908 [nomen dubium], Polythorax Cope 1876 [nomen dubium], Polythorax missuriensis Cope 1876 [nomen dubium], Probaena sculpta Hay 1903 [nomen dubium]
Unr. †Perichelydia Joyce 2017
+
Unr. †Meiolaniformes Sterli and de la Fuente 2013
+
G. †Chubutemys Gaffney et al. 2007
Fm. †Meiolaniidae Lydekker 1887
+
Invalid names: Miolaniidae [synonym], Miolaniidae [synonym]
G. †Otwayemys Gaffney et al. 1998
G. †Patagoniaemys Sterli and de la Fuente 2011
G. †Peligrochelys Sterli and de la Fuente 2013
G. †Trapalcochelys Sterli et al. 2013
Unr. †Sichuanchelyidae Tong et al. 2012
+
G. †Laurasichersis Pérez-García 2020
G. †Mongolochelys Khosatzky 1997
G. †Sichuanchelys Ye and Pi 1997
G. †Spoochelys Smith and Kear 2013
+
Spoochelys ormondea Smith and Kear 2013
G. †Platycheloides Haughton 1928
G. †Proganochelys Baur 1887
+
+
Invalid names: Psammochelys keuperina Quenstedt 1889 [objective synonym], Stegochelys dux Jaekel 1914 [synonym]
Proganochelys ruchae de Broin 1984
Proganochelys tenertesta Joyce et al. 2009
Invalid names: Psammochelys Quenstedt 1889 [synonym]
Fm. †Proterochersidae Nopcsa 1928
+
G. †Keuperotesta Szczygielski and Sulej 2016
G. †Proterochersis Fraas 1913
+
Proterochersis limendorsa Szczygielski and Sulej 2016
Proterochersis porebensis Szczygielski and Sulej 2016
Proterochersis robusta Fraas 1913
+
Invalid names: Chelytherium obscurum Meyer 1863 [synonym], Chelytherium obscurum Meyer 1863 [synonym], Murrhardtia staeschei Karl and Tichy 2000 [synonym], Murrhardtia staeschei Karl and Tichy 2000 [synonym], Proterochersis intermedia Fraas 1913 [synonym], Proterochersis intermedia Fraas 1913 [synonym]
Proterochersis robusta Fraas 1913
+
Invalid names: Chelytherium obscurum Meyer 1863 [synonym], Chelytherium obscurum Meyer 1863 [synonym], Murrhardtia staeschei Karl and Tichy 2000 [synonym], Murrhardtia staeschei Karl and Tichy 2000 [synonym], Proterochersis intermedia Fraas 1913 [synonym], Proterochersis intermedia Fraas 1913 [synonym]
Invalid names: Chelytherium Meyer 1863 [synonym], Murrhardtia Karl and Tichy 2000 [synonym]
G. †Saltosauropus Bernier et al. 1984
+
Saltosauropus latus Bernier et al. 1984
G. †Siamochelys Tong et al. 2002
+
Siamochelys peninsularis Tong et al. 2002
Or. Testudines Batsch 1788 [turtle]
+
Subor. †Amphichelydia Lydekker 1889
+
Superfm. †Pleurosternoidea Hay 1930
Superfm. †Proganochelyoidea Baur 1887
G. †Asturichelys Bergounioux 1957
G. †Chelonipus von Lilienstern 1939
+
Chelonipus cuneiformis von Lilienstern 1939
Chelonipus plieningeri Haubold 1971
Chelonipus torquatus von Lilienstern 1939
Subor. Cryptodira Cope 1868
+
Fm. †Bashuchelyidae Tong et al. 2012
Fm. Chelonemydidae Rütimeyer 1872
+
Invalid names: Propleuridae Cope 1870 [synonym]
Superfm. Chelonioidea Baur 1893 [sea turtle]
Fm. Chelydridae Swainson 1839
Unr. Chelydroidea Baur 1893
G. †Chitracephalus Dollo 1884
+
Invalid names: Salasemys Fuentes et al. 2003 [synonym]
Superfm. †Dermochelyoidea
Unr. Durocryptodira Danilov and Parham 2008
Unr. Eucryptodira Gaffney 1975
G. †Galvechelone Pérez-García and Murelaga 2012
Fm. Kinosternoidea Hay 1892 [mud turtle]
Fm. †Nanhsiungchelyidae Yeh 1966
Unr. Panchelonioidea Joyce et al. 2004
Unr. †Pantestudinoidea Joyce et al. 2004
G. †Polysternum Bergounioux 1935
Unr. †Selmacryptodira Gaffney et al.
Subor. Trionychia
Fm. Trionychidae Gray 1825 [softshell turtle]
Superfm. Trionychoidea Fitzinger 1826
Invalid names: Adocusia Danilov and Parham 2006 [empty], Carettochelyoidea Romer 1956 [empty], Charitonyx tajanikolaevae Chkhikvadze 1980 [nomen dubium], Chersidae Zittel 1890 [empty], Cryptoderinea Vaillant 1894 [empty], Dermatochelydidae [empty], Glyptopidae [empty], Glyptopsidae Marsh 1890 [empty], Indochelyidae Datta et al. 2000 [empty], Kallokibotioninae Nopsca 1923 [empty], Kayentachelyidae Gaffney et al. 1987 [empty], Kinosternia Gaffney and Meylan 1988 [empty], Kinosternoidae Holroyd and Hutchison 2002 [empty], Meiolaniidae Lydekker 1887 [empty], Pantrionychia Joyce et al. 2004 [empty], Platysternoidea Baur 1893 [empty], Tritosternidae Lydekker 1889 [empty]
G. †Entoplastrites Huene 1956
+
Fm. †Haichemydidae Sukhanov and Narmandakh 2006
+
G. †Haichemys Sukhanov and Narmandakh 2006
G. †Larachelus Pérez-García and Murelaga 2012
+
Larachelus morla Pérez-García and Murelaga 2012
G. †Odontochelys Li et al. 2008
+
Odontochelys semitestacea Li et al. 2008
Unr. Pancryptodira Joyce et al. 2004
+
Unr. †Macrobaenidae Sukhanov 1964
G. †Owadowia Szczygielski et al. 2017
Fm. †Thalassemydidae Zittel 1889
+
Invalid names: Acichelyidae Lydekker 1889 [synonym]
Unr. †Panpleurodira Danilov and Parham 2008
+
G. †Caribemys Fuente and Iturralde-Vinet 2001
Unr. †Dortokidae Lapparent de Broin and Murelaga 1996
G. Pelomedusa Wagler 1830 [African helmeted turtle]
Subor. Pleurodira Cope 1865 [sideneck turtle]
+
Unr. †Bothremydidae Baur 1891
Fm. Chelidae Gray 1825
+
Invalid names: Chelydidae Gray 1869 [synonym], Hydraspididae Cope 1868 [synonym]
Unr. Eupleurodira Gaffney and Meylan 1988
Unr. †Panchelidae Joyce et al. 2004
Unr. †Pelomedusoides Broin 1988
Fm. Podocnemididae Cope 1868
Invalid names: Amphichelydidae Hay [empty], Megapleurodira Gaffney et al. 2006 [empty], Minipleurodira Gaffney et al. 2006 [empty], Notoemydidae Fernandez and de la Fuente 1994 [empty], Panpelomedusoides Joyce et al. 2004 [empty], Platychelira Gaffney et al. 2006 [empty]
Subor. †Proganochelydia
+
+
Invalid names: Triassochelyidae Abel 1919 [synonym]
G. †Tacuarembemys Perea et al. 2014
+
Tacuarembemys kusterae Perea et al. 2014
G. †Triassochelys Jaekel 1918
+
Invalid names: Stegochelys Jaekel 1914 [replaced]
Invalid names: Apertotemporalis Stromer 1934 [nomen dubium], Apholidemys Pomel 1847 [nomen dubium], Casichelydia Gaffney 1975 [empty], Chelone obovata Owen 1842 [nomen dubium], Chelone sopita Leidy 1865 [nomen vanum], Chelonia Latreille 1800 [synonym], Chelonii Latreille 1800 [synonym], Cryptrodiramorpha Lee 1995 [empty], Euclastochelys Bergounioux 1955 [nomen dubium], Euclastochelys interrupta Bergounioux 1955 [nomen dubium], Meiolania damelipi White et al. 2010 [nomen dubium], Platychelone Dollo 1909 [nomen nudum], Platychelone emarginata Dollo 1909 [nomen nudum], Plesiochelydiae [empty], Podocnemis lata Ristori 1895 [invalid subgroup], Senonemys suemegensis Bohn 1966 [nomen dubium], Sokotochelys Halstead 1979 [nomen dubium], Temnoclemmys cordiformis Bergounioux 1958 [nomen vanum], Trionyx fuchienensis Yeh 1974 [nomen dubium], Trionyx tshelkarensis Chkhikvadze 1973 [nomen nudum]
G. †Testudinites Weiss 1830
Fm. Testudofiexoolithidae Hirsch 1996
+
G. †Testudofiexoolithus Hirsch 1996
+
Fm. Testudoolithidae Hirsch 1996
+
G. †Testudoolithus Hirsch 1996
+
Testudoolithus rigidus Hirsch 1996
G. †Tiantaioolithus Fang et al. 2003
+
Tiantaioolithus jiangi Fang et al. 2003
Unr. †Thalassochelydia Anquetin et al. 2017
+
G. †Achelonia von Meyer 1860
+
Achelonia formosa von Meyer 1860
Fm. †Eurysternidae Dollo 1886
+
G. †Chelonides Maack 1869
G. †Hydropelta Meyer 1850
G. †Idiochelys Meyer 1839
G. †Palaeomedusa Meyer 1860
G. †Parachelys Meyer 1864
Invalid names: Plesiochelys minima Oertel 1915 [nomen dubium]
G. †Eurysternum Meyer 1839
+
Eurysternum neuquinum Fernandez and de la Fuente 1988
Eurysternum wagleri Meyer 1839
G. †Hylaeochelys Lydekker 1889
+
Hylaeochelys belli Mantell 1844
+
Invalid names: Archaeochelys valdensis Lydekker 1889 [synonym], Hylaeochelys sollasi Nopcsa 1928 [synonym], Platemys dixoni Owen 1853 [synonym], Platemys mantelli Owen 1841 [synonym]
Hylaeochelys kappa Pérez-García and Ortega 2014
+
Invalid names: Pleurosternon koeneni Grabbe 1884 [synonym]
Invalid names: Archaeochelys Lydekker 1889 [synonym]
G. †Jurassichelon Pérez-García 2015
+
Jurassichelon moseri Bräm 1965
Jurassichelon oleronensis Pérez-García 2015
G. †Neusticemys Fernandez and de la Fuente 1993
+
Neusticemys neuquina Fernandez and de la Fuente 1988
Fm. †Plesiochelyidae Rütimeyer 1873
+
G. †Craspedochelys Rütimeyer 1873
G. †Globochelus de Lapparent de Broin et al. 2021
G. †Plesiochelys Rütimeyer 1873
+
Invalid names: Stegochelys Lydekker 1889 [synonym]
G. †Portlandemys Gaffney 1975
G. †Tholemys Andrews 1921
G. †Yanduchelys Peng et al. 2005
Invalid names: Emys dutertrei Sauvage 1872 [nomen dubium], Hispaniachelys Slater et al. 2011 [nomen dubium], Hispaniachelys prebetica Slater et al. 2011 [nomen dubium], Stylemys lindenensis Maack 1869 [nomen dubium]
G. †Solnhofia Gaffney 1975
+
Solnhofia brachyrhyncha Anquetin and Püntener 2020
Solnhofia parsonsi Gaffney 1975
G. †Thalassemys Rütimeyer 1859
+
Thalassemys bruntrutana Puntener et al. 2015
Thalassemys carva Nessov 1984
Thalassemys hugii Rütimeyer 1873
+
Invalid names: Eurysternum ignoratum Bräm 1965 [synonym], Thalassemys gresslyi Rütimeyer 1873 [synonym]
Invalid names: Parathalassemys Nessov and Krassevskaya 1984 [synonym]
G. †Tropidemys Rütimeyer 1873
+
Pelobatochelys blakii Seeley 1875
Tropidemys langii Rütimeyer 1873
+
Invalid names: Craspedochelys plana Rütimeyer 1873 [synonym], Tropidemys expansa Rütimeyer 1873 [synonym], Tropidemys gibba Rütimeyer 1873 [synonym]
Tropidemys seebachi Portis 1878
Invalid names: Chelonia valanginiensis Pictet and Campiche 1862 [nomen dubium], Chelonides robusta Portis 1878 [nomen dubium]
Invalid names: Acichelys approximata Wagner 1856 [nomen dubium], Euryaspis radians Wagner 1861 [nomen dubium], Plesiochelys oblonga Oertel 1924 [nomen dubium], Plesiochelys pumilio Oertel 1924 [nomen dubium], Thalassemys heusseri Oertel 1924 [nomen dubium], Tropidemys morinica Sauvage 1880 [nomen dubium]
Subor. Thecophora Dollo
+
Invalid names: Chelonioidae Hay 1930 [empty], Chelydoidae Hay 1930 [empty], Emydoidae Hay 1930 [empty], Pleurosternoidae Hay 1930 [empty], Thalassemydoidae Hay 1930 [empty], Trionychoidae Hay 1930 [empty]
Invalid names: Aplax oberndorferi Meyer 1843 [nomen dubium], Athecae Cope 1871 [empty], Chelonipedidae Sarjeant and Langston 1994 [empty], Chelycarapookus Warren 1969 [nomen dubium], Chelycarapookus arcuatus Warren 1969 [nomen dubium], Chelys blakii Mackie 1863 [nomen dubium], Chengyuchelyidae Yeh 1990 [empty], Emys neumayri Seeley 1881 [nomen dubium], Emys paranensis Burmeister 1885 [nomen nudum], Heckerochelyidae Sukhanov 2006 [empty], Megasternon Gray 1842 [nomen nudum], Mongolochelyidae Sukhanov and Pozdnjakov [empty], Odontochelyidae Li et al. 2008 [empty], Platemys sehuensis Ameghino 1889 [nomen dubium], Protochelys Lydekker 1889 [nomen dubium], Testudo elata Gervais 1877 [nomen dubium], Testudo stricklandi Phillips 1871 [nomen dubium], Tretosternon punctatum Owen 1842 [nomen dubium], Trionyx mammillaris Cope 1877 [nomen nudum]
Subcl. †Theromorpha Cope 1878
+
Subor. †Dromasauria Broom 1907
+
Invalid names: Galechiridae King 1988 [empty], Macroscelesauridae Haughton 1924 [empty]
Unr. Eotherapsida Ivakhnenko 2003
+
Superor. †Dinomorpha Ivakhnenko 2003
+
Invalid names: Gorgodontia Ivakhnenko 2003 [empty], Nikkasauria Ivakhnenko 2008 [empty]
Subor. †Styracocephalia Haughton 1929
+
Fm. †Styracocephalidae Haughton 1929
+
G. †Styracocephalus Haughton 1929
Invalid names: Poliosauria Williston 1917 [empty], Protodonta Osborn 1888 [empty]
Subcl. †Tocosauria Haeckel 1866
+
Invalid names: Dichthacantha Haeckel 1866 [empty]
Invalid names: Atremata Hay 1930 [empty], Chelydosauria Cope 1898 [empty], Dipnoa Fitzinger 1826 [empty], Dravidosaurus Yadagiri and Ayyasami 1979 [nomen dubium], Dravidosaurus blanfordi Yadagiri and Ayyasami 1979 [nomen dubium], Enaliosauria Parkinson 1822 [empty], Holosauria Jaekel 1911 [empty], Hyperosauria Jaekel 1910 [empty], Ichthyosaurus inexpectatus Rusconi 1948 [nomen dubium], Lyognatha Jaekel 1910 [empty], Macelognatha Marsh 1884 [empty], Monotreta Hay 1930 [empty], Ornithocephala Bunzel 1870 [empty], Pessopteryx arctica Wiman 1910 [nomen dubium], Pessopteryx pinguis Wiman 1910 [nomen dubium], Placodontomorpha [empty], Plesiosaurus doedicomus Owen 1840 [nomen dubium], Proganosauromorpha Kuhn 1968 [empty], Proreptilia Haeckel 1876 [empty], Prosauria Gadow 1898 [empty], Protorosauria Jaekel 1910 [empty], Puercosaurus Williston 1916 [invalid subgroup], Puercosaurus obtusidens Williston 1916 [nomen dubium], Rhamphosauria Haeckel 1866 [empty], Saurichthys indicus de Koninck 1863 [nomen dubium], Saurophidia Gray [empty], Seps Laurenti 1768 [nomen oblitum], Svalbardosaurus Mazin 1981 [nomen dubium], Svalbardosaurus crassidens Mazin 1981 [nomen dubium]
Diagnosis
No diagnoses are available
Measurements
No measurements are available
Composition: phosphaticsubp
Maximum body mass: 100000 kgg
Minimum body mass: 10 gg
Environment: terrestrialuc
Locomotion: actively mobilec
Created: 2017-04-17 15:15:35
Modified: 2017-04-17 15:15:35
Source: g = genus, c = class, subp = subphylum, uc = unranked clade
References: Hendy et al. 2009, Witton 2008, Peczkis 1995, Carroll 1988, Greene 1997, Holman 2000

Age range

Maximum range based only on fossils: base of the Ludlow to the top of the Holocene or 427.40000 to 0.00000 Ma
Minimum age of oldest fossil (stem group age): 423.0 Ma

Collections (24436 total)

Oldest occurrences

Time interval Ma Country or state Original ID and collection number
Ludlow427.4 - 423.0United Kingdom (Wales) Keilorites sp. (74805)
Pennsylvanian323.2 - 298.9USA (Massachusetts) Dromopus woodworthi (34780)
Westphalian A318.7 - 316.9Canada (Nova Scotia) Hylonomus lyelli (86946) Hylonomus wymani, Hylonomus lyelli, Hylerpeton curtidentatum, Hylonomus latidens (28069)
Westphalian C - Westphalian D314.6 - 307.5Canada (Nova Scotia) Paleothyris acadiana (80111)
Westphalian D309.8 - 307.5Czech Republic (Pilsen) Hylonomus acuminatus, Coelostegus prothales, Brouffia orientalis (84835)
Westphalian D309.8 - 307.5USA (Illinois) Cephalerpeton ventriarmatum (79598)
Westphalian D309.8 - 307.5USA (Ohio) Sauropleura longipes, Carbonodraco lundi (85292)
Kasimovian - Kungurian307.0 - 272.3USA (Utah) Halgaitosaurus gregarius (218159)
Missourian306.0 - 303.7USA (Kansas) Petrolacosaurus kansensis, Podargosaurus hibbardi (80784)
Missourian306.0 - 303.7USA (Illinois) Reptilia indet. (80714)
Gzhelian303.7 - 298.9Canada (Prince Edward Island) Erpetonyx arsenaultorum (171344)
Virgilian303.7 - 298.9USA (Kansas) Concordia cunninghami, Spinoaequalis schultzei (68427) Reptilia indet. (215555)
Gzhelian - Asselian303.7 - 295.5France (Burgundy) Belebey augustodunensis (164623)
Virgilian - Wolfcampian303.7 - 286.0USA (New Mexico) Rhiodenticulatus heatoni (77412)
Asselian298.9 - 295.5USA (West Virginia) Melanothyris morani (85178)
Asselian298.9 - 295.5France (Languedoc-Roussillon) Aphelosaurus lutevensis (171350)
Asselian298.9 - 295.5USA (Texas) Romeria primus, Protorothyris archeri (79163)
Asselian - Sakmarian298.9 - 290.1USA (Texas) Bolosaurus striatus (11165)
Wolfcampian298.9 - 286.0USA (Colorado) Captorhinidae indet. (85479)
Wolfcampian298.9 - 286.0USA (New Mexico) Bolosaurus sp. (180382) Captorhinidae indet. (181075) Captorhinidae sp. (85433 85434 85435 85436 85437) Captorhinus aguti (85339) Puercosaurus obtusidens (85337) Rhiodenticulatus heatoni (80833) Zarcasaurus tanyderus (171346)