Reptilia Laurenti, 1768
Classification
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Chordata
- Reptilia Laurenti, 1768
Abelichnus Calvo, 1991
Abelisauridae Bonaparte & Novas, 1985
Abranchus Harlan, 1825
Acallosuchus Long & Murry, 1995
Acanthocalyx Cope, 1895
Acanthophallus Cope, 1893
Acanthopyga Gray, 1838
Acanthotoposaurus Evans & van den Heever, 1987
Acanthurus Daudin, 1803
Acerosodontosaurus Currie, 1980
Achelonia Wagner, 1860
Achelus Oken, 1816
Achilemys Hay, 1908
Achirhina Jan, 1861
Achirina Boulenger, 1896
Acichelys Meyer, 1854
Acleistorhinidae Daly, 1969
Acranthos Swainson, 1839
Acrochordon Fischer, 1808
Acrocordon Cuvier, 1800
Acrohydraspis Rusconi, 1934
Acrosaurus Meyer, 1854
Actiosaurus Sauvage, 1883
Ada Gray, 1825
Adactinus Rafinesque, 1815
Adaria Gray, 1840
Adelobasileus Lucas & Hunt, 1990
Adelosaurus Watson, 1914
Adriosaurus Seeley, 1881
Adromicus Cope, 1900
Aechmophrys Coues, 1875
Aegirosaurus Bardet & Fernandez, 2000
Aellodon Agassiz, 1846
Aelurodraco Broom & Robinson, 1948
Aelurosauroides Boonstra, 1934
Aelurosaurus Owen, 1881
Aelurosuchus Broom, 1906
Aenigmasaurus Parrington, 1953
Aethiopus Hitchcock, 1848
Aethyopus Hitchcock, 1848
Aetosauridae Baur, 1887
Ageroolithus Vianey-Liaud & Lopez-Martinez, 1997
Agetosaura Gistl, 1868
Agkistrognathus Nichol & Brinkman, 1993
Agnosaurus Boonstra, 1952
Agnosphitys Fraser, Padian, Walkden & Davis, 2002
Agnostiphys Fraser, Padian, Walkden & Davis, 2002
Agratomus Cope, 1887
Agrestipus Weems, 1987
Agriotes Jan, 1863
Agustinia Bonaparte, 1999
Ahetula Gray, 1842
Aidachar Nesov, 1981
Ailurops Bonaparte, 1837
Akropus Lilienstern, 1939
Alamosemys Hay, 1908
Alethesaurus Gilmore, 1928
Aletopelta Ford & Kirkland, 2001
Aligator Gray, 1825
Alligatorium Jourdan, 1862
Allodaposuchus Nopcsa, 1928
Allosauridae Marsh, 1878
Alopecideops Broom, 1932
Alopecodon Broom, 1908
Alopecognathus Broom, 1915
Alopecopsis Broom, 1920
Alopecorhinus Broom, 1912
Aloposauroides Brink & Kitching, 1953
Aloposaurus Broom, 1910
Alsodromus Fitzinger, 1843
Altiphylax Yeriomtschenko & Szczerbak, 1984
Altirhinus Norman, 1998
Alvarezsauridae Bonaparte, 1991
Alxasauridae Russell & Dong, 1993
Alzadasaurus Welles, 1943
Ama Smith, 1882
Amalitzkia Pravoslavlev, 1927
Amblydectes Hooley, 1914
Amblyolacerta Rocek, 1984
Amblypeza Hay, 1908
Amblypus Hitchcock, 1858
Ammodytes Bonaparte, 1831
Amoebopsis Cope, 1895
Ampelosaurus Le Loeuff, 1995
Amphardis Cope, 1895
Amphiardis Cope, 1889
Amphibiolithus Linnaeus, 1768
Amphicotylus Cope, 1878
Amphixestus Peters, 1871
Anabisetia Coria & Calvo, 2002
Anaphotidemys Hay, 1905
Anatopus Lapparent & Montenat, 1967
Anatosuchus Sereno, Sidor, Larsson & Gado, 2003
Anatrisauropus Ellenberger, 1972
Anchisauridae Marsh, 1885
Anchisauripodidae Lull, 1904
Ancylocentrum Schmidt, 1927
Ancyropus Hitchcock, 1848
Anelytrops Duméril, 1856
Aneugomphius Broom & Robinson, 1948
Aneuporus Bocourt, 1874
Angaha Cuvier, 1800
Angelias Brygoo, 1980
Angistorhinopsis von Huene, 1922
Angistorhinus Mehl, 1914
Anguinicephalus Deraniyagala, 1934
Anguisaurus Münster, 1839
Anhangueridae Campos & Kellner, 1985
Anhomoiichnium Dozy, 1935
Anhuichelys Yeh, 1979
Aniksosaurus Martinez & Novas, 2006
Anisoclonium Cope, 1900
Ankistrodon Huxley, 1865
Ankylosauridae Brown, 1908
Anna Amalitsky, 1922
Anningia Broom, 1927
Anodontosaurus Sternberg, 1929
Anomalodon Jan, 1863
Anomalopodia Strand, 1935
Anomocephalus Modesto, Rubidge & Welman, 1999
Anomoepodidae Lull, 1904
Anomosaurus von Huene, 1902
Anoplus Gray, 1840
Anshunsaurus Liu, 1999
Antecosuchus Tatarinov, 1973
Anteosauridae Boonstra, 1954
Antetonitrus Yates & Kitching, 2003
Anthracochelys Bergounioux, 1953
Anthraxochelys Bergounioux, 1953
Anticheiropus Sarjeant & Mossman, 1978
Anurognathidae Nopcsa, 1928
Apalochelone Rafinesque, 1832
Apateon von Meyer, 1844
Apatheon von Meyer, 1844
Apatodonosaurus Mehl, 1928
Apatomerus Williston, 1903
Apertotemporalis Stromer, 1934
Aphelophis Cope, 1873
Aphelosaurus Gervais, 1858
Apholidemys Pomel, 1847
Aplax von Meyer, 1843
Aploaspis Cope, 1866
Apneumona Fleming, 1822
Appalachiosaurus Carr, Williamson & Schwimmer, 2005
Apractocleidus Smellie, 1915
Apsisaurus Laurin, 1991
Apterigodon Edeling, 1864
Aptychodon Reuss, 1855
Araeosaurus Seeley, 1881
Araeoscelidae
Araeoscelididae
Arambourgia Kälin, 1939
Arapaima Müller, 1843
Archaeoceratops Dong & Azuma, 1997
Archaeosuchus Broom, 1905
Archaius Gray, 1865
Archilacerta Haeckel, 1895
Arctognathoides Boonstra, 1934
Arctognathus Broom, 1911
Arctosaurus Adams, 1875
Arctosuchus Broom, 1911
Arganarhinus Long & Murry, 1995
Argoides Hitchcock, 1846
Argozoum Hitchcock, 1848
Aristodesmus Seeley, 1896
Ariuns Boie, 1832
Arnes Cocteau, 1837
Arnognathus Broom, 1907
Aromosuchus Gray, 1862
Arribasaurus Williston, 1914
Arribasuchus Long & Murry, 1995
Arthroodonta Fritsch, 1879
Arthurdactylus Frey & Martill, 1994
Artzosuchus Efimov, 1983
Asiaceratops Nesov & Kaznyshkina, 1989
Askeptosauridae
Aspidocercus Fitzinger, 1843
Aspidophrys Fitzinger, 1843
Aspidopsis Fitzinger, 1843
Aspidosaurus Fitzinger, 1843
Aspidosoma Fitzinger, 1843
Aspidula Philippi, 1899
Aspistis Wagler, 1830
Asterophis Fitzinger, 1843
Asthenognathus Bocourt, 1884
Astrophis Fitzinger, 1861
Atacisaurus Astre, 1931
Atelope Gray, 1842
Athenosaurus Aldrich & Jones, 1930
Atractocephalus Sauvage, 1879
Atractopsis Despax, 1911
Atreipus Olsen & Baird, 1986
Atropis Glückselig, 1851
Attenosaurus Aldrich & Jones, 1930
Aublysodon Leidy, 1868
Aulacephalodontidae Toerien, 1953
Aulacocephalodon Seeley, 1898
Aulacocephalus Seeley, 1898
Aulacochelys Lydekker, 1889
Aulaeosaurus Wagler, 1833
Australobarbarus Kurkin, 2000
Australosuchus Willis & Molnar, 1991
Australovenator Hocknull, White, Tischler, Cook et al., 2009
Austriadactylus Dalla Vecchia, Wild, Hopf & Reitner, 2002
Auxipes Heyler & Lessertisseur, 1963
Avalonia Seeley, 1898
Aviatyrannis Rauhut, 2003
Avimimidae Kurzanov, 1981
Avisaurus Brett-Surman & Paul, 1985
Axestenys Hay, 1899
Axolotl Cuvier, 1807
Ayllusuchus Gasparinin, 1984
Azarifeneria Dutuit, 1989
Azhdarchidae Nessov, 1984
Bagaceratopidae Alifanov, 2003
Bagaraatan Osmolska, 1996
Bahariasaurus Stromer, 1934
Bainia Broom, 1922
Bainoceratops Tereschenko & Alifanov, 2003
Baiopsis Hoepen, 1934
Bakiea Gray, 1869
Bantuchelys Dollo, 1925
Baptanodontidae
Baropus Baird, 1952
Baryphracta Frey, Laemmert & Riess, 1987
Baseodon Leidy, 1865
Basutodon von Huene, 1932
Basutosaura Hewitt, 1925
Batagurella Gray, 1869
Bathyglyptus Case, 1911
Bathyspondylus Delair, 1982
Batrachiosaurus Harlan, 1839
Batrachopodiscus Ellenberger, 1972
Batrachosaurus Fitzinger, 1839
Batrachotherium Harlan, 1839
Batrachotomus Gower, 1999
Batracinus Rafinesque, 1815
Bauriidae Watson, 1911
Baurioides Broom, 1925
Baurocynodon Brink, 1951
Bayloria Olson, 1941
Becklespinax Olshevsky, 1991
Beipiaosaurus Xu, Tang & Wang, 1999
Bellophis Lockington, 1877
Belonochasma Broili, 1939
Bennettazhia Nessov, 1991
Besanosaurus Dal Sasso & Pinna, 1996
Bettaia Bedriaga, 1886
Biarmosaurus Tchudinov, 1964
Biarmosuchidae Olson, 1962
Biarmosuchoides Tverdokhlebova & Ivachnenko, 1994
Bienosaurus Dong, 2001
Bifidichnium Demathieu & Weidmann, 1982
Bimanus Oppel, 1811
Bipedes Aldrich & Jones, 1930
Bipedius Rafinesque, 1815
Bipedopus Haubold, 1971
Bipedos Deraniyagala, 1953
Biseridensidae
Bissektipelta Parish & Barrett, 2004
Blepharactisis Hallowell, 1860
Blezingeria von Huene, 1951
Blikanasaurus Gallon & van Heerden, 1985
Blomia Sennikov, 1992
Blomosaurus Tatarinov, 1978
Blomosuchus Sennikov, 1997
Boaclonium Cope, 1900
Bolosauridae Cope, 1878
Bonaparteichnium Calvo, 1991
Bongarus Fischer, 1808
Boranus Rafinesque, 1815
Bosiutrisauropus Ellenberger, 1972
Bothriophis Eichwald, 1837
Bothrodon Kerr, 1926
Bothrodytes Cope, 1886
Botrophis Rochebrune, 1880
Boulengeria Lataste, 1885
Boverisuchus Kuhn, 1938
Brachiosauridae Riggs, 1904
Brachyblemma Wagler, 1833
Brachybrachium Williston, 1904
Brachydectes Owen, 1879
Brachypareia Haughton, 1929
Brachyprosopus Olson, 1937
Brachypterygius von Huene, 1923
Brachyra Kuhl & van Hasselt, 1822
Brachyrhynchus Fitzinger, 1843
Brachyrophus Cope, 1878
Brachysaurana Strand, 1928
Brachysuchus Case, 1929
Brachytaenius von Meyer, 1842
Brachytrachelus Giebel, 1850
Brachyuraniscus Broili & Schroeder, 1935
Bradysuchus Haughton, 1929
Branchocela Agassiz, 1846
Brasilitherium Bonaparte, Martinelli, Schultz & Rubert, 2003
Brasilodon Bonaparte, Martinelli, Schultz & Rubert, 2003
Bressanichnus Calvo, 1991
Brevicaudata Varona, 1985
Brevidensilacerta Li Jinling, 1991
Brillanceausuchus Michard, de Broin, Brunet & Hell, 1990
Brimosaurus Leidy, 1854
Brithopodidae
Brodiechelys Nopcsa, 1928
Broila Bergounioux, 1932
Bromsgroveia Gallon, 1986
Brontopodus Farlow, Pillman & Hawthorne, 1989
Brontopus Heyler & Lessertisseur, 1963
Broomicephalus Brink & Kitching, 1953
Broomisaurus Joleaud, 1920
Brownella Broom, 1913
Bubonias Cope, 1874
Buckantaus Nessov, 1985
Bullacephalus Rubidge & Kitchin, 2003
Bunostegos Sidor, Blackburn & Gado, 2003
Burnetiidae
Bysmachelys Johnston, 1937
Bystra Hay, 1916
Cabritopsis Beddome, 1870
Cacibupteryx Gasparini, Fernandez & De La Fuente, 2004
Cacocalyx Cope, 1895
Cacotus Günther, 1869
Cadborosaurus Bousfield & LeBlond, 1995
Cadmus Theobald, 1868
Cadurciguana Auge, 1987
Cadurcosaurus Filhol, 1882
Caenagnathidae Sternberg, 1940
Caimanosuchus Kuhn, 1938
Calamita Ritgen, 1828
Calamophis Meyer, 1874
Calamosaurus Lydekker, 1891
Calechidna Tschudi, 1846
Callawayia Maisch & Matzke, 2000
Calleonasus Kalandadze, 1985
Callibrachion Boule & Glangeaud, 1893
Callinia Gray, 1869
Callopistria do Amaral, 1937
Calonotus Jan, 1863
Calophis Fitzinger, 1843
Calrita Gray, 1840
Calyptrosaura Gray, 1865
Camarasauridae Cope, 1877
Camarataxis Cope, 1859
Camilia Gray, 1845
Camopsis Rafinesque, 1815
Campinosaurus Auge, 1992
Camptosauridae Marsh, 1885
Camunipes Ceoloni, Conti, Mariotti, Mietto & Nicosia, 1987
Cantinea Gray, 1840
Cantinia Gray, 1845
Cantorella Gray, 1870
Capelliniosuchus Simonelli, 1896
Caramus Rafinesque, 1815
Carandaisuchus Gasparini, 1985
Carcharodontosauridae Stromer, 1931
Cardiodon Owen, 1845
Caririsuchus Kellner, 1987
Carlesia von Huene, 1931
Caryoderma Cope, 1886
Caseidae Williston, 1912
Caseosaurus Hunt, Lucas, Heckert, Sullivan & Lockley, 1998
Castresia Stefano, 1902
Catapherodon Rochebrune, 1885
Catherpes Gistl, 1868
Caudipteridae Zhou & Wang, 2000
Caudipteryx Ji Qiang, Currie, Norell & Ji, 1998
Caudisoma Hoffmann, 1887
Caudocoelus von Huene, 1932
Caulodon Cope, 1877
Cautleya Theobald, 1879
Cearadactylidae
Cedarosaurus Tidwell, Carpenter & Brooks, 1999
Celesaurus Zenker, 1836
Centemodon Lea, 1856
Centromastix Boulenger, 1916
Centrophis Fitzinger (?), 1843
Centroplites Macklot, 1830
Cephalastron von Huene, 1926
Cephalastronius von Huene, 1926
Cephaloloxes Gistl, 1848
Cephalonia von Huene, 1926
Cephalophractus Fitzinger, 1843
Cephalosimus Chabanaud, 1916
Cephiotus Rafinesque, 1815
Cerataelurus Broom, 1931
Ceratoblepharis Fitzinger, 1843
Ceratochelys Huxley, 1887
Ceratophallus Cope, 1893
Ceratopsidae Marsh, 1888
Ceratosauridae Marsh, 1884
Cercocalamus Günther, 1863
Cerdodon Broom, 1915
Cerdognathus Broom, 1915
Cerdops Broom, 1948
Cerdorhinus Broom, 1936
Cerdosuchoides Broom, 1936
Cerdosuchus Broom, 1936
Cetarthrosaurus Seeley, 1873
Cetiosauridae Lydekker, 1888
Chacaicosaurus Fernandez, 1994
Chaelosaurus Jourdan, 1862
Chalishevia Ochev, 1980
Chamoeleopsis Gray, 1830
Champse Merrem, 1820
Champsosauridae Cope, 1876
Changpeipus Young, 1960
Chaohusaurus Young & Dong, 1972
Chaoyangsaurus Zhao, Cheng & Xu, 1999
Charactodon Troschel, 1874
Charitemys Hay, 1908
Charitonyx Chkhikvadze & Shuvalov, 1980
Charruodon Abdala & Ribeiro, 2000
Chascax Ritgen, 1828
Chatterjeea Long & Murry, 1995
Chauliodonta Fritsch, 1879
Chaunolaemus Peters, 1870
Cheilorhina Jan, 1862
Cheirogaster Bergounioux, 1935
Chelaspodos Harkness, 1851
Chelichnus Jardine, 1850
Cheliphus Rafinesque, 1832
Cheliurus Rafinesque, 1815
Chelone Ritgen, 1828
Chelonelithes de Paul de Lamanon, 1780
Chelonemys Jourdan, 1862
Chelonides Portis, 1878
Chelonipus Lilienstern, 1939
Chelopsis Rafinesque, 1815
Chelyoposaurus Broom, 1904
Chelyoposuchus Kuhn, 1939
Chelyrhynchus Haughton, 1917
Chelyzoon von Huene, 1902
Chemelys Rafinesque, 1815
Cheneosaurus Lambe, 1917
Chensaurus Mazin, Suteethora, Buffetaut, Jaeger & Helmcke-Ingavat, 1991
Chersobius Fitzinger, 1835
Chersophis Fitzinger, 1843
Chersus Wagler, 1830
Chianopelas Tschudi, 1845
Chiayusaurus Bohlin, 1953
Chilenosuchus Casamiquela, 1980
Chilolepis Fitzinger, 1843
Chilomeles Gray, 1841
Chilopoma Cope, 1875
Chimaera Hitchcock, 1858
Chiniquodontidae Huene, 1956
Chirocolus Wagler, 1830
Chirotheriidae Abel, 1935
Chiwetasaurus Haughton, 1928
Chloremys Gray, 1871
Chloroechis Bonaparte, 1849
Chlynovia Tatarinov, 2000
Choerosaurus Haughton, 1929
Chondrodela Rafinesque, 1815
Chonespondylus Leidy, 1868
Chorodromus Fitzinger, 1843
Choroscopus Fitzinger, 1843
Chrysaurus Rafinesque, 1815
Chrysolamprus Fitzinger, 1843
Chubutisaurus del Corro, 1975
Churchillia Baird & Girard, 1852
Cimochelys Owen, 1842
Cimoliasauridae Delair, 1959
Cimoliochelys Woodward, 1888
Cincosaurus Aldrich & Jones, 1930
Cinothorax Fitzinger, 1835
Circapalmichnus Gand, 1977
Cirognathus Lydekker, 1890
Cistecephalidae Haughton & Brink, 1954
Cistecynodon Brink & Kitching, 1953
Cistesaurus Geoffroy, 1831
Cistula Gray, 1825
Cladeiodon Owen, 1841
Cladevodon Agassiz, 1846
Cladophis Duméril, 1859
Cladyodon Owen, 1842
Claorhynchus Cope, 1892
Claraziidae Peyer, 1936
Clarencea Brink, 1959
Clasmodosaurus Ameghino, 1899
Claudiosauridae
Clepsydropidae Cope, 1878
Clepsysaurus Lea, 1853
Cliftia Gray, 1849
Cliorhizodon Twelvetrees, 1880
Clothelaps Cope, 1895
Clothonia Daudin, 1803
Clypeosaurus Gray, 1845
Coahomasuchus Heckert & Lucas, 1999
Coartaredens Spencer & Storrs, 2002
Coburgosuchus Heller, 1954
Coccoessus Cope, 1862
Coelophysidae Paul, 1988
Coeluridae Marsh, 1881
Collaria Dotsenko, 1989
Colobodectes Modesto, Rubidge, Visser & Welman, 2003
Colobopus Fitzinger, 1843
Colossoemys Rodrigues, 1892
Colubellus Philippi, 1899
Colubrifer Carroll, 1982
Columbosauripus Sternberg, 1932
Colymbosaurus Seeley, 1874
Composuchus von Huene, 1932
Compsodon Hoepen, 1934
Compsognathidae Marsh, 1882
Compsosaurus Leidy, 1857
Comptichnus Ellenberger, 1972
Conchiosaurus von Meyer, 1833
Conchochelys Hay, 1905
Congosaurus Dollo, 1914
Conorhina Duméril & Bibron, 1854
Constrictor Wagler, 1830
Contectopalatus Maisch & Matzke, 1998
Continuoolithus Zelenitsky, Hills & Currie, 1996
Cophoscincus Peters, 1867
Coprophis Parris & Holman, 1978
Cora Jan, 1863
Coralliophis Fitzinger, 1843
Cordylinus Rafinesque, 1815
Cormodactylus Fitzinger, 1861
Coronophis Fitzinger, 1843
Corosauridae Kuhn, 1961
Cosesaurus Ellenberger & Villalta, 1974
Cosmiosophis Jan, 1863
Costa Estes, 1983
Crealia Gray, 1858
Creberidentat Li Jinling, 1991
Cremastosaurus Cope, 1873
Crichtonsaurus Dong, 2002
Criocephalosaurus Kammerer & Sidor, 2002
Criocephalus Broom, 1928
Criorhynchidae Hooley, 1914
Cristasaura Gray, 1852
Cristonasus Surkov, 1999
Crocodylia
Crosbysaurus Heckert, 2004
Crossanthera Cope, 1893
Crotulurus Rafinesque, 1820
Crurosaurus von Huene, 1902
Crymocetus Cope, 1869
Cryptoclididae Williston, 1925
Cryptocynodon Seeley, 1895
Cryptodontidae Owen, 1861
Cryptoposcincus Mocquard, 1906
Cryptosaurus Anonymous, 1833
Cteniogenidae Seiffert, 1975
Cteniogenyidae Seiffert, 1975
Ctenochasmatidae Nopcsa, 1928
Ctenocosta Fric, 1876
Ctenodactylus Fitzinger, 1843
Ctenodeira Fitzinger, 1843
Ctenodira Agassiz, 1846
Ctenodon Bonaparte, 1831
Ctenorhachis Hook & Hotton, 1991
Ctenosauriscidae Kuhn, 1964
Cubicodon Jaeger, 1828
Cuchoa Gray, 1844
Cultripes Müller, 1832
Cuminia Gray, 1841
Cumnoria Seeley, 1888
Cumnovia Carus, 1888
Custa Fleming, 1822
Cutleria Lewis & Vaughn, 1965
Cyamodontidae Nopcsa, 1923
Cybicodon Agassiz, 1846
Cyclochelys Bergounioux, 1953
Cyclogomphodon Broom, 1919
Cyclopus Heyler & Lessertisseur, 1963
Cyclosaurus Wagler, 1833
Cyclurus Agassiz, 1839
Cycnorhamphus Seeley, 1870
Cylindricodon Jaeger, 1828
Cylindrodon Nopcsa, 1926
Cymatholcus Clark, 1932
Cymatosauridae von Huene
Cymatosaurus Fritsch, 1894
Cynariognathus Broom, 1931
Cynarioides Broom, 1925
Cynariops Broom, 1925
Cynidiognathus Haughton, 1922
Cyniscodon Broom, 1915
Cyniscopoides Brink & Kitching, 1953
Cyniscops Broom, 1937
Cynochampsa Owen, 1860
Cynodontipus Ellenberger, 1976
Cynodraco Owen, 1876
Cynodracon Owen, 1876
Cynognathidae
Cynogomphius Broom, 1932
Cynosaura Gray, 1831
Cynosuchoides Broom, 1931
Cyoclosaurus Wagler, 1833
Cyonosaurus Olson, 1937
Cyprius Gray, 1845
Cyrbasiodon Broom, 1931
Cyrtopus Heyler & Lessertisseur, 1963
Cyrtura Jaekel, 1904
Cysteosaurus Agassiz, 1846
Cystosaurus Geoffroy, 1833
Dactris Rafinesque, 1815
Dadadon Flynn, Parrish, Rakotosamimanana, Ranivoharimanana, Simpson & Wyss, 2000
Daedalosaurus Carroll, 1978
Dakotosaurus Branson & Mehl, 1933
Daptocephalus Hoepen, 1934
Daqingshanodon Zhu Yanglong, 1989
Dasyderma Fitzinger, 1843
Dasygnathus Huxley, 1880
Davletkulia Ivachnenko, 1990
Deferrariischnium Calvo, 1991
Deinocheiridae Osmólska & Roniewicz, 1970
Deinodon Leidy, 1856
Deiropeda Fitzinger, 1843
Delairichnus Haubold, 1971
Delectosaurus Kurkin, 2001
Delphaciognathus Broom, 1932
Delphinognathus Seeley, 1892
Deltatmema Hatt & Langebartel, 1953
Deltavjatia Lebedev, 1987
Dendrechides Duméril, 1856
Dendroechis Fischer, 1855
Dendrohyas Fitzinger, 1832
Dendroolithidae Zhao & Li, 1988
Dendrophilus Fitzinger, 1843
Dendrovaranus Mertens, 1942
Derasmosaurus Barbera & Macuglia, 1992
Derotremata Duméril, 1854
Desmatodon Case, 1908
Desmatosuchidae
Desmospondylus Williston, 1910
Deuterosauridae
Deuterosauropodopus Ellenberger, 1972
Deuterotrisauropus Ellenberger, 1972
Dhongoka Gray, 1870
Diacium Cope, 1873
Diadectoides Case, 1911
Diademodontidae Haughton, 1925
Diaelurodon Broom, 1911
Diamantinasaurus Hocknull, White, Tischler, Cook et al., 2009
Dianzhongia Cui Guihai, 1981
Diarthrognathidae
Diasemosaurus Ameghino, 1898
Dibolosodon Ameghino, 1898
Diceratops Hatcher, 1905
Diclida Rafinesque, 1832
Dicloniscus Cope, 1892
Dicloniseus Cope, 1900
Dicraeosauridae Huene, 1927
Dicranozygoma Seeley, 1900
Dicroglossus Günther, 1860
Dictybolos Olson, 1970
Dictyoolithidae Zhao, 1994
Dicynodontidae Owen, 1859
Dicynodontoides Broom, 1940
Didanodon Osborn
Didicla Rafinesque, 1815
Digerrhum Cope, 1870
Diictodontidae Cluver & King, 1983
Diictodontoides Watson, 1960
Dilepis Gray, 1865
Dilophosauripus Welles, 1971
Dimacrodontidae
Dimeresurus Bleeker, 1857
Dimeropus Cope, 1892
Dimodosaurus Pidancet & Chopard, 1863
Dimorphodontidae
Dinanomodon Broom, 1938
Dinartamus Broom, 1923
Dinocephalosaurus Li, 2003
Dinocynodon Broom, 1929
Dinophoneus Broom, 1923
Dinopolus Broom, 1936
Dinosauriovum Vialov, 1975
Dinosaurus Fischer de Waldheim, 1847
Dinosphageus Broom, 1929
Dinosuchus Gervais, 1876
Dinotosaurus Seeley, 1866
Diopecephalus Seeley, 1871
Diopeus Cope, 1892
Dioptroblepharis Fitzinger, 1843
Diplodocidae Marsh, 1884
Diplophallus Cope, 1893
Diplophatulus Cope, 1900
Diplosaurus Marsh, 1877
Dipoderus Rafinesque, 1815
Dipodus Agassiz, 1845
Dipriurus Rafinesque, 1815
Dipsoglyphophis Barbour & Amaral, 1927
Dirodon Agassiz, 1846
Diropeda Agassiz, 1846
Discosomus Oken, 1816
Disparovum Vialov, 1986
Distopus Heyler & Lessertisseur, 1963
Dithyrosternon Pictet, 1857
Ditrochosaurus Gürich, 1890
Dixeya Haughton, 1928
Dolabrosaurus Berman & Reisz, 1992
Dolichobrachium Williston, 1904
Dolichopareia Haughton, 1929
Dolichopodus Gilmore, 1926
Dolichosuchus von Huene, 1932
Dolichovertebra Huene
Doliobrachium Williston, 1904
Doliosaurus Orlov, 1958
Doliovertebra von Huene, 1902
Dollodon Paul, 2008
Dolychorhynchops Williston, 1902
Domeykodactylus Martill, Frey, Diaz & Bell, 2000
Dongoka Gray, 1869
Dongusaurus Vjuschkov, 1964
Dongusuchus Sennikov, 1988
Doniceps Ochev & Rykov, 1968
Dopasia Gray, 1853
Doratodon Seeley, 1881
Dorfia Gray, 1839
Dorosuchus Sennikov, 1989
Doswelliidae Weems, 1980
Dracocella Gray, 1845
Draconiscus Philippi, 1899
Draconurus Thienemann, 1828
Draconyx Mateus & Antunes, 2001
Dragona Rafinesque, 1815
Dragonne Oken, 1817
Drepanosauridae Olson & Sues, 1986
Drinker Bakker, Gallon, Siegwarth & Filla, 1990
Driveriidae
Dromaeopodidae
Dromaeosauridae Colbert & Russell, 1969
Dromicosaurus van Hoepen, 1920
Dryodynastes Fitzinger, 1843
Dryomedusa Fitzinger, 1843
Dryophilus Fitzinger, 1843
Dryosauridae Milner & Norman, 1984
Dryptosauridae Marsh, 1890
Dryptosauroides Heune, 1932
Dsungaripteridae Young, 1964
Dugundia Dunn, 1944
Dvina Amalitsky, 1922
Dviniidae Tatarinov, 1968
Dynamosaurus Osborn, 1905
Dysalotosaurus Pompeckj, 1920
Dyslocosaurus Mclntosh, Coombs & Russell, 1992
Eberhardia Angel, 1920
Ebrachosuchus Kuhn, 1936
Eccasaurus Broom, 1910
Echidnoides Mauduyt, 1844
Ecteninion Martinez, May & Forster, 1996
Ectocynodon Cope, 1878
Edaphosauridae Cope, 1882
Edaxosaurus Kalandadze, 1973
Edgarosaurus Druckenmiller, 2002
Eilenodon Rasmussen & Callison, 1981
Ekbainacanthus Yakowlew, 1902
Ekshmer Nessov, 1981
Elachistosuchus Janensch, 1949
Elaphropus Fitzinger, 1843
Elaphrosuchus Broom, 1946
Elaposoma Fitzinger, 1843
Elasmosauridae Cope, 1869
Elatosaurus Kalandadze, 1985
Elcabrosaurus Case, 1907
Elephantopus Gray, 1874
Elmisauridae Osmólska, 1981
Elongatoolithidae Zhao, 1975
Elosaurus Peterson & Gilmore, 1902
Elph Kurkin, 1999
Eltrolepurus Rafinesque, 1815
Emausaurus Haubold, 1990
Embaphias Cope, 1894
Emia Gray, 1870
Emmenia Gray, 1870
Empagusia Gray, 1838
Empedias Cope, 1881
Empedocles Cope, 1878
Emphabias Cope, 1894
Emydes Brongniart, 1806
Emydichnium Nopcsa, 1923
Emydochampsa Broom, 1912
Emydopidae Cluver & King, 1983
Emydops Broom, 1912
Emydorhinus Broom, 1935
Emydorhynchus Broom, 1914
Emydoses Keys, 1993
Emyoides Gray, 1844
Emysuchus Nopcsa, 1924
Enaliochelys Seeley, 1869
Endennasauridae Rensto, 1984
Endennasaurus Renesto, 1984
Endodromicus Gistl, 1868
Endogomphodon Broom, 1932
Endothiodontidae Owen, 1876
Energosuchus Ochev, 1986
Engyomasaurus Kaup & Scholl, 1834
Engyommasaurus Agassiz, 1844
Enigmosaurus Barsbold, 1983
Enobius Broom, 1923
Enpeltis Fitzinger, 1861
Enthekiodon Hulke, 1869
Entradasuchus Hunt & Lockley, 1995
Eocaptorhinus Heaton, 1979
Eocenosuchus Kuhn, 1938
Eocyclops Broom, 1914
Eodicynodontidae Barry, 1974
Eolambia Kirkland, 1998
Eoraptor Sereno, Forster, Rogers & Monetta, 1993
Eorasaurus Sennikov, 1997
Eosimops Broom, 1922
Eothyrididae Romer & Price, 1940
Eotitanosuchidae Tchudinov, 1960
Eotyrannus Hutt, Naish, Martill, Barker & Newbery, 2001
Epanterias Cope, 1878
Ephoenosaurus Anonymous, 1839
Epicampodon Lydekker, 1885
Epiglottophis Cope, 1891
Epirhina Jan, 1862
Equijubus You, Luo, Shubin, Witmer, Tang & Tang, 2003
Eremioplanis Fitzinger, 1843
Eremioscopus Fitzinger, 1843
Eremites Agassiz, 1846
Eremosuchus Buffetaut, 1989
Erichosaurus Ameghino, 1899
Ericiolacertidae Watson & Romer, 1956
Eridanosaurus Balsamo-Crivelli, 1864
Eriphostoma Broom, 1911
Erizia Gray, 1865
Erlicosaurus Perle, 1981
Erpetopus Moodie, 1929
Erpetosuchus Newton, 1893
Erycopsis Fitzinger, 1843
Eryma Gray, 1870
Erymnus Wagler, 1830
Erythrophis Fitzinger, 1843
Erythrosuchidae Watson, 1917
Erythroxyrhopus Thompson, 1914
Estemmenosuchidae Tchudinov, 1960
Esterodon Seeley, 1894
Estesius Wallach, 1984
Eubrachiosaurus Williston, 1904
Eubrontidae Lull, 1904
Eucamerotus Hulke, 1872
Eucephalus Fitzinger, 1843
Euchambersiidae
Eucnemesaurus Hoepen, 1920
Eucoelophysis Sullivan & Lucas, 1999
Eudactylus Fitzinger, 1843
Eudimorphodontidae
Eudioptra Fitzinger, 1843
Eudraco Haeckel, 1895
Euhelopodidae Romer, 1956
Euliolaemus Tschudi, 1846
Eulophus Tschudi, 1845
Eumantella Broom, 1935
Eumantellia Broom, 1935
Eumatthevia Broom, 1930
Eumecoides Taylor, 1941
Eumekichnium Nopcsa, 1923
Eunotosaurus Seeley, 1892
Eunotus Fitzinger, 1843
Euophrys Günther, 1858
Eupachemys Leidy, 1877
Euparkeriidae Huene, 1920
Eupeltis Fitzinger, 1843
Eupeplus Wagler, 1830
Eupodosaurus Boulenger, 1891
Euprotodon Cope, 1860
Eurhous Fitzinger, 1861
Eurichnus Lull, 1942
Eurosaurus Fischer de Waldheim, 1842
Euryaspis Wagner, 1861
Eurycarpus Seeley, 1889
Eurycervix von Huene, 1902
Eurycleidus Andrews, 1922
Eurydorus Leidy, 1859
Eurypterygius Jaekel, 1904
Eurystephus Cope, 1862
Euscolosuchus Sues, 1992
Eutynichium Nopcsa, 1923
Excalibosaurus McGowan, 1986
Exilisuchus Otschev, 1979
Exorhina Jan, 1862
Exypnestes Kaup, 1826
Exypneustes Agassiz, 1845
Exypnistes Kaup, 1836
Fabrosauridae Galton, 1972
Faveoloolithidae Zhao & Ding, 1976
Fenestrosaurus Osborn, 1924
Fenhosuchus Young, 1964
Ferganasaurus Alifanov & Averianov, 2003
Ferganosuchus Yefimov, 1982
Flaviagama Alifanov, 1989
Francosaurophis Kuhn, 1959
Francosuchus Kuhn, 1932
Fremouwsaurus Gow, 1992
Frenosaurus Welles, 1943
Fukangolepis Yang, 1978
Fukuiraptor Azuma & Currie, 2000
Fukuisaurus Kobayashi & Azuma, 2003
Furcapes Demathieu, 1977
Furcillus Cope, 1892
Galechiridae
Galecranium Broom, 1948
Galeophrys Broom, 1948
Galeopidae
Galeopsidae Broom, 1912
Galerhinus Broom, 1935
Galerhynchus Broom, 1937
Galesauridae Lydekker, 1890
Galesphyridae Currie, 1981
Gallodactylidae
Galtonia Hunt & Lucas, 1994
Galvesaurus Barco, Canudo, Cuenca-Bescos & Ruiz-Omeñaca, 2005
Gamosaurus Otschev, 1979
Gampsodactylum Nopcsa, 1923
Gargalonipes Heyler & Montenat, 1981
Garudimimidae Barsbold, 1981
Gasparinisaura Coria & Salgado, 1996
Gastrotropis Fitzinger, 1843
Gaumia Hahn, Wild & Wouters, 1987
Gavial Cuvier, 1807
Gekkoanolis Varona, 1985
Genovum von Huene, 1950
Genusaurus Accarie, Beaudoin, Dejax, Fries, Michard & Taquet, 1995
Geodites Rafinesque, 1832
Geoemys Agassiz, 1846
Geoliemys Matsumoto, 1929
Geomydidae
Georgia Ochev, 1976
Georgiasaurus Ochev, 1977
Geosternbergia Miller, 1978
Gephyrinus Cope, 1886
Germanodactylidae Young, 1964
Gerrhopilus Fitzinger, 1843
Gerrhopygus Gray, 1845
Gharialis Theobald, 1876
Gigandipodidae Lull, 1904
Gigantitherium Hitchcock, 1858
Gigantoscelus Van Hoepen, 1916
Gilchristosuchus Wu & Brinkman, 1993
Gilmoreia Taylor, 1951
Glaniolestes Cope, 1862
Glanosuchus Broom, 1904
Glaphyorhynchus Giebel, 1847
Glaphyrorhynchus Meyer, 1842
Glaridodon Seeley, 1888
Glaucosaurus Williston, 1915
Glochinodon van Hoepen, 1916
Glochinodontoides Haughton, 1924
Glyptoderma Fitzinger, 1843
Glyptogenys Keqin & Fox, 1991
Gobekko Borsuk-Bialynicka, 1990
Gojirasaurus Carpenter, 1997
Gomphodontoides Brink & Kitching, 1951
Gondwanatitan Kellner & de Azevedo, 1999
Gongxianosaurus Luo & Wang, 1999
Gongylocormus Fitzinger, 1843
Gongyloseps Böttger, 1883
Goniosaurus Meyer, 1858
Gonodactylus Gray, 1830
Gonydipsas Agassiz, 1846
Gonyechis Fitzinger, 1843
Gonyodipsas Fitzinger, 1843
Gopher Gray, 1870
Gorgonognathus Haughton, 1915
Gorgonops Owen, 1876
Gorgonopsidae Lydekker, 1890
Gorgonorhinus Broom, 1937
Gracilisaurus Weigelt, 1930
Grallatoridae Lull, 1904
Graoullyodon Godefroit & Cuny, 1997
Gravemys Sukhanov & Narmandakh, 1983
Gregaripus Weems, 1987
Gresslyosaurus Rütimeyer, 1857
Grumuliovum Vialov, 1986
Gryphus Wagler, 1830
Guaibasaurus Bonaparte, Ferigolo & Ribeiro, 1999
Guanlingsaurus Yin, 2000
Guchengosuchus Peng Jianghua, 1991
Guizhouichthyosaurus Cao & Luo, 2000
Gumatagichnus Gabunia, Kurbatov & Sennikov, 1988
Guyomarchia Angel, 1923
Gwyneddichnidae Bock, 1952
Gwyneddosaurus Bock, 1945
Gymnarthrus Case, 1910
Gymnogomphius Wagler, 1833
Gyrinus Shaw, 1798
Hadrosaurichnus Alonso, 1980
Hadrosauridae Cope, 1869
Hadrosauripeda Vyalov, 1988
Hahnia Godefroit & Battail, 1997
Haininchelys Schleich, Kastle & Groessens-van Dyck, 1988
Hainosarus Dollo, 1885
Halazhaisuchus Wu Xiaochun, 1982
Halidracon Wagler, 1830
Halilimnosaurus Ritgen, 1826
Halticosaurus von Huene, 1908
Hamatopus Lilienstern, 1939
Hanosaurus Young, 1972
Hapalolepis Peters, 1871
Haploscincus Cope, 1892
Haptodontidae
Harpacochampsa Megirian, Murray & Willis, 1991
Harpagopus Hitchcock, 1848
Harpagosaurus Gilmore, 1928
Harpedactylus Hitchcock, 1848
Harpymimidae Barsbold & Perle, 1984
Haughtoniana Boonstra, 1938
Hazhenia Sun & Ho, 1981
Hebius Thomson, 1913
Hecatasaurus Brown, 1910
Hedronchus Cope, 1877
Helcura Hitchcock, 1848
Helemys Rütimeyer, 1859
Helionomus Gray, 1841
Heliophilus Fitzinger, 1843
Helioscopus Fitzinger, 1843
Helminthoelaps Jan, 1859
Helodectes Cope, 1881
Helopus Wiman, 1929
Helveticosauridae Peyer, 1955
Hemicordylus Smith, 1838
Hemidipsas Günther, 1858
Hemidryas Peters & Doria, 1878
Hemigenius Dugès, 1888
Hemiplatus Rafinesque, 1815
Hemishinisaurus Li Jinling, 1991
Hemiura Rafinesque, 1815
Hemydactylus Goldfuss, 1820
Hennigius Kretzoi & Kretzoi, 2000
Henodontidae von Huene, 1948
Heptagerrhon Fitzinger, 1861
Herbstosaurus Casamiquela, 1975
Heremites Gray, 1845
Herpetaethiops Günther, 1866
Herpetochalcis Böttger, 1883
Herpetocheirus Seeley, 1895
Herpetochirus Seeley, 1895
Herpetogale Keyser & Brink, 1979
Herpeton Oken, 1816
Herpetotragus Fitzinger, 1843
Herpystezoum Hitchcock, 1848
Herrerasauridae Benedetto, 1973
Hescheleria Peyer, 1936
Hesperosaurus Carpenter, Miles & Cloward, 2001
Heteroclemmys Peters, 1874
Heterodontosauridae Romer, 1966
Heterodontosuchus Lucas, 1898
Heteronotus Hallowell, 1857
Heteropython de Rochebrune, 1880
Heterosuchus Seeley, 1887
Hewittia Brink, 1959
Hexacynodon Tatarinov, 1974
Hexatarsostinus Hawkins, 1840
Higina Gray, 1842
Hikanodon Keferstein, 1834
Himalblepharus Jeriomtschenko, 1987
Histiocercus Agassiz, 1846
Hoburogekko Alifanov, 1989
Hodzhakulia Nessov, 1985
Hofmeyriidae
Homalocephalidae Dong, 1978
Homalopsida Jan, 1861
Homalosaurus Hallowell, 1852
Homodontosaurus Broom, 1949
Homorophus Cope, 1871
Honania Young, 1979
Hopiichnus Welles, 1971
Hoplichnus Hitchcock, 1848
Hortalotarsus Seeley, 1894
Hortulia Gray, 1842
Howesiidae Watson, 1917
Huabeisaurus Pang Qiqing & Cheng Zhengwu, 2000
Huanghesaurus Gao Keqin, 1983
Huayangosauridae Dong et al., 1982
Hudiesaurus Dong, 1997
Hudsonelpidia McGowan, 1995
Huehuecuetzpalli Reynoso, 1998
Hueneus Toerien, 1953
Hunanpus Zeng, 1982
Hupehsuchus Young, 1972
Hwanghocynodon Young, 1979
Hyadactyla Gray, 1842
Hyaenasuchus Broom, 1908
Hyalinus Merrem, 1820
Hybemys Leidy, 1871
Hydrechis Ritgen, 1828
Hydromeda Aldrich & Jones, 1930
Hydrone Rafinesque, 1814
Hydropelta Wagner, 1860
Hydrophilophis Schmidt, 1852
Hydroscopus Fitzinger, 1843
Hyenosaurus Broom, 1935
Hygina Gray, 1849
Hylaeochelys Lydekker, 1889
Hylogyne Knight
Hyorhynchus Seeley, 1889
Hyphalosauridae Gao & Fox, 2005
Hypopnous Cope, 1895
Hypsilophodontidae Dollo, 1882
Hypsiscopus Fitzinger, 1843
Ibiba Gray, 1825
Ichthyosauridae
Ichthyosuchus Cope, 1872
Ichthyoterus Rouillier, 1847
Icticephalus Broom, 1915
Ictidochampsa Broom, 1948
Ictidodon Broom, 1925
Ictidodraco Broom & Robinson, 1948
Ictidognathus Broom, 1911
Ictidoparia Broom, 1925
Ictidopsis Van Hoepen, 1916
Ictidorhinidae Broom, 1932
Ictidosaurus Broom, 1903
Ictidosuchidae Broom, 1903
Ictidosuchus Broom, 1900
Igdamanosaurus Lingham-Soliar, 1991
Iguanavus Marsh, 1872
Iguanodontidae Bonaparte, 1850
Impensodens Hatt & Langebartel, 1953
Incisivosaurus Xu, Cheng, Wang & Chang, 2002
Indochelys Datta, Manna, Ghosh & Das, 2000
Inostranzevia Pravosalvlev, 1927
Inostranzewia Amelitzki, 1901
Insulophon Novikov, 1992
Interpresosaurus Kurkin, 2001
Inusitatodon Brink & Kitching, 1953
Irenesauripus Sternberg, 1932
Irenichnites Sternberg, 1932
Irenosaurus Efimov, 1988
Iridophis Fitzinger, 1861
Isalorhynchus Buffetaut, 1983
Isanosaurus Buffetaut, Suteethorn, Cuny, Tong, Le Loeuff, Khansubha & Jongautchariyakul, 2000
Ischigualastia Cox, 1962
Ischnosaurus Thollière, 1856
Ischyrodon Merian, 1838
Ischyrosaurus Cope, 1870
Ischyrotherium Leidy, 1857
Iserosaurus Fritsch, 1905
Isfjordosaurus Motani, 1999
Isisaurus Wilson & Upchurch, 2003
Isocampe Hitchcock, 1858
Isodactylus Gray, 1845
Isselosaurus Filhol, 1888
Istiocercus Fitzinger, 1843
Istiodactylidae
Jaikosuchus Sennikov, 1990
Jainosaurus Hunt, Lockley, Lucas & Meyer, 1994
Janenschia Wild, 1991
Janusichnus Ceoloni, Conti, Mariotti & Nicosia, 1988
Jastmelchyi Ckhikvadze, 1988
Jeholosaurus Xu, Wang & You, 2000
Jesairosaurus Jalil, 1997
Jiangshanosaurus Tang, Kang, Jin, Wei & Wu, 2001
Jinzhousaurus Wang & Xu, 2001
Jobaria Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, Wilson & Wilson, 1999
Junggarsuchus Clark, Xu, Forster & Wang, 2004
Jushatyria Sennikov, 1985
Kallistira Hay, 1908
Kamagorgon Tatarinov, 1999
Kannemeyeriidae Huene, 1948
Karenites Tatarinov, 1995
Karoomys Broom, 1903
Karroowalteria Kuhn, 1960
Kayentapus Welles, 1971
Kayentasuchus Clark & Sues, 2002
Kazachemys Chkhikvadze, 1989
Keirognathus Seeley, 1888
Keneus Cocteau, 1837
Kenyemys Wood, 1983
Kepodactylus Harris & Carpenter, 1996
Khaan Clark, Norell & Barsbold, 2001
Khoratosuchus Lauprasert, Cuny, Thirakhupt & Suteethorn, 2009
Khudiakovia Arkhangelsky, 1999
Khurendukhosaurus Sigogneau-Russell & Efimov, 1984
Kingoriidae Cluver & King, 1983
Kinothorax Gray, 1863
Kionocrania Stannius, 1856
Kitchinganomodon Maisch, 2002
Kitchingia Broom & George, 1950
Kladeisteriodon Plieninger, 1846
Kladyodon Plieninger, 1846
Klamelisaurus Zhao Xijin, 1993
Koalemasaurus Haughton, 1929
Kolposaurus Camp, 1942
Komlosaurus Kordos, 1983
Koparion Chure, 1994
Koprolithes Kloeden, 1834
Koramosagogus Wells & Wellington, 1983
Korros Boie, 1828
Kotasaurus Yadagiri, 1988
Kotelcephalon Tatarinov, 1999
Kouphichnium Nopcsa, 1923
Koupia Boonstra, 1948
Krokolithes Hirsch, 1985
Kudnu Bartholomai, 1979
Kunpania Ailin Sun, 1978
Labionaris Brocchi, 1876
Labocania Molnar, 1974
Lacertiliovum Vialov, 1986
Lacertina Meuschen, 1778
Lacertoidopus Ellenberger, 1972
Lacertulus Carroll & Thompson, 1982
Laeviovum Vialov, 1986
Laevisoolithidae Mikhailov, 1991
Lagerpetonidae Arcucci, 1986
Lagosuchidae Bonaparte, 1975
Laiyangpus Young, 1960
Lambeosauridae Huene, 1948
Lamiasaurus Watson, 1914
Lampreremias Boulenger, 1918
Lamprosauroides Schmidt, 1927
Lamprosaurus Meyer, 1860
Lanceosaurus Gilmore, 1928
Langaia Fleming, 1822
Langhaha Ritgen, 1828
Langobardisaurus Renesto, 1994
Lanthanocephalus Modesto, Rubidge & Welman, 2002
Lanthanolania Modesto & Reisz, 2003
Lanthanostegus Modesto, Rubidge & Welman, 2003
Lanthanosuchidae Efremov, 1946
Lanzhousaurus You, Ji, & Li, 2005
Laophis Owen, 1857
Laoporus Lull, 1918
Lapparentichnus Haubold, 1971
Latastea Reuss, 1929
Latasteopara Reuss, 1935
Latisternon Auffenberg, 1981
Lazarussuchus Hecht, 1992
Leavachia Broom, 1948
Leiogerrhon Fitzinger, 1843
Leiosophis Jan, 1863
Leipherus Gray, 1842
Leipsanosaurus Nopcsa, 1918
Lejosophis Jan, 1862
Lemnodytes Gray, 1842
Leontosaurus Broom & George, 1950
Lepagia Hahn, Wild & Wouters, 1987
Lepidon Swainson, 1839
Lepidotosaurus Hancock & Howse, 1870
Leptoceratopsidae Nopcsa, 1923
Leptocranius Bronn, 1837
Leptonectidae
Leptopterygiidae Kuhn, 1934
Leptorhytaon Günther, 1858
Leptorrhamphus Ambrosetti, 1890
Leptorynchus Falconer & Cautley, 1837
Leptospondylus Owen, 1854
Leptostermon Gray, 1825
Leptosuchus Case, 1922
Lessemsaurus Bonaparte, 1999
Lestanshoria Novikov, 1991
Lesticodus Leidy, 1859
Lewisuchus Romer, 1972
Leydiosuchus Lambe, 1907
Lianghusuchus Young, 1949
Lianthera Cope, 1893
Liaoceratops Xu, Makovicky, Wang, Norell & You, 2002
Liaoningosaurus Xu, Wang & You, 2001
Liban Bonaparte, 1831
Ligabueino Bonaparte, 1996
Ligabuesaurus Bonaparte, Gonzalez Riga & Apesteguia, 2006
Lijiagousaurus Li Zhengqi, 2001
Liliensternus Welles, 1984
Limayichnus Calvo, 1991
Limnoscelidae Williston, 1911
Limnoscelops Lewis & Vaughn, 1965
Liogerrhon Agassiz, 1846
Liophallus Cope, 1895
Liosteira Fitzinger, 1843
Liostira Agassiz, 1846
Liotropis Fitzinger, 1843
Lissophis Hallowell, 1857
Litargosuchus Clark & Sues, 2002
Liurus Cope, 1862
Lodia Baird & Girard, 1853
Lonchodectes Hooley, 1914
Loncosaurus Ameghino, 1899
Longicepia Miller, 1971
Longipes Demathieu, 1977
Longirostria Arkhangelsky, 1998
Longosuchus Hunt & Lucas, 1990
Lophodeira Fitzinger, 1843
Lophodira Agassiz, 1846
Lophoprosopus Mehl, 1915
Lophostropheus Ezcurra & Cuny, 2007
Lophroprosopus Mehl, 1915
Loricotherium Weigelt, 1929
Losillasaurus Casanovas, Santafe & Sanz, 2001
Lotosaurus Zhang, 1975
Lourinhasaurus Dantas, Sanz, Marques da Silva, Ortega, dos Santos & Cachao, 1998
Lowesaurus Pregill, Gauthier & Greene, 1986
Loxodon Jan, 1867
Lucasuchus Long & Murry, 1995
Lucianosaurus Hunt & Lucas, 1994
Ludodactylus Frey, Martill & Buchy, 2003
Luetkesaurus Kiprijanoff, 1883
Lumbrerasaurus Donadio, 1985
Lumkuiidae Hopson & Kitching, 2001
Lupeosauridae
Lupeosaurus Romer, 1937
Lupeurus Rafinesque, 1815
Lurdusaurus Taquet & Russell, 1999
Lycaenodontoides Haughton, 1929
Lycaenognathus Broom, 1925
Lycaenoides Broom, 1930
Lycedops Broom, 1935
Lycideopsidae Broom, 1931
Lycochampsa Broom, 1915
Lycosaurus Owen, 1876
Lycosuchidae Haughton & Brink, 1954
Lystrosauridae
Lythrosuchus Long & Murry, 1995
Mabuiopsis Angel, 1925
Macellodus Owen, 1854
Macgowania Motani, 1999
Macrobothrium Fitzinger, 1843
Macrocephalus Bleeker, 1876
Macrodontophion Zborzevski, 1834
Macromerosaurus Lydekker, 1889
Macromirosaurus Curioni, 1847
Macrophelsuma Hoffstetter, 1946
Macroplacus Schubert-Klempnauer, 1975
Macropodosaurus Zagharow, 1964
Macropterygius von Huene, 1923
Macrorhynchus Duméril, 1806
Macroscelesaurus Haughton, 1918
Macroscelosaurus Münster, 1852
Macrospondylus Meyer, 1830
Macrotrachelus Giebel, 1850
Maeriophis Andrews, 1901
Mafatrisauropus Ellenberger, 1972
Magnosaurus von Huene, 1932
Magyarosaurus von Huene, 1932
Maiaspondylus Maxwell & Caldwell, 2006
Makariogecko Joger, 1984
Malarguesaurus Gonzalez Riga, Previtera & Pirrone, 2009
Malasaurus Tatarinov, 2002
Malutinisuchus Ochev, 1986
Mandaodonites Cruickshank, 1986
Manracosuchus Efimov, 1984
Maraisaurus Boonstra, 1953
Marasuchus Sereno & Arcucci, 1994
Maresaurus Gasparini, 1997
Marmarosaurus Owen, 1845
Marmoretta Evans, 1991
Marmorosaurus Owen, 1845
Maroccosuchus Jonet & Wouters, 1977
Marshosaurus Madsen, 1976
Mascarenogecko Ulber & Gericke, 1988
Massospondylidae Huene, 1914
Mastersoniidae
Mastigura Fleming, 1822
Matamata Merrem, 1820
Maubeugia Godefroit & Battail, 1997
Maudia Gray, 1858
Megablabes Günther, 1865
Megacephalus Fitzinger, 1843
Megachersine Hewitt, 1933
Megachirella Renesto & Posenato, 2003
Megacyclops Broom, 1931
Megadontosuchus Mook, 1955
Megalocercus Duméril, 1859
Megalosauridae Bonaparte, 1850
Megalosauropus Colbert & Merrilees, 1967
Megara Gray, 1840
Megaraptor Novas, 1998
Megasaurus Rafinesque, 1815
Megasternon Gray, 1842
Megasternum Lydekker, 1889
Megophias Rafinesque, 1817
Megurus Rafinesque, 1815
Mehliella Strand, 1932
Meiodactis Rafinesque, 1815
Mekosuchus Balouet & Buffetaut, 1987
Melanelaps Wall, 1906
Melanogenys Tschudi, 1846
Melanorosauridae Huene, 1929
Melanosauridae
Melanothyris Romer, 1952
Melinodon Broom, 1905
Melitosaurus Hulke, 1871
Menadon Flynn, Parrish, Rakotosamimanana, Ranivoharimanana, Simpson & Wyss, 2000
Menatalligator Piton, 1937
Menodon von Meyer, 1835
Merriamosaurus Maisch & Matzke, 2002
Mesadactylus Jensen & Padian, 1989
Mesenosauridae
Mesocoronis Reuss, 1927
Mesodeca Rafinesque, 1832
Mesoleptos Cornalia, 1851
Mesomycterus Cope, 1892
Mesorhinis Reuss, 1927
Mesorhinus Jaekel, 1910
Mesosuchus Watson, 1912
Metarhinus Jaekel, 1910
Metarmosaruus Cope, 1878
Metashastasaurus Nicholls & Manabe, 2001
Metoceros Gray, 1840
Metopophis Peters, 1870
Micaela Werner, 1918
Michellia Müller, 1911
Micrichnus Abel, 1926
Micrictodon Broom, 1937
Microblepharis Fitzinger, 1843
Microcleidus Watson, 1909
Microctenus Fitzinger, 1843
Microdactylus Fitzinger, 1843
Microgomphodon Seeley, 1895
Microhelodon Broom, 1931
Microleptosaurus Skuphos, 1893
Micronothosaurus Haas, 1963
Microphon Ivakhnenko, 1983
Microsauropus Moodie, 1929
Microscalenodon Hahn, Lepage & Wouters, 1988
Microsyodon Ivachnenko, 1995
Microterapodiscus Ellenberger, 1972
Microtheledon Broom, 1936
Microurania Ivachnenko, 1995
Mikadocephalus Maisch & Matzke, 1997
Millerettoides Broom, 1948
Millerettops Broom, 1948
Millerina Broom, 1938
Miolaeerta Rocek, 1984
Mitredon Shapiro & Jenkins, 2001
Mitylia Gray, 1858
Mixosauridae Baur, 1887
Mochlodon Seeley, 1881
Mochlorhinus Seeley, 1898
Mollesaurus Fernandez, 1999
Moltenotetrapodiscus Ellenberger, 1972
Monachelys Williams, 1952
Monaspis Smith, 1849
Mongolochamops Alifanov, 1988
Monjurosuchidae Endo, 1940
Monobothris Cope, 1894
Monodiastema Bibron, 1854
Monolophosaurus Zhao & Currie, 1993
Monophorus Cope, 1892
Monophyaspis Cope, 1892
Monoplocus Günther, 1859
Montsecosuchus Buscalioni & Sanz, 1990
Moodieichnus Sarjeant, 1971
Moraesichnium Leonardi, 1979
Morenoa Dugés, 1906
Morinosaurus Sauvage, 1874
Moschognathus Broom, 1914
Moschoides Byrne, 1938
Moschorhinidae Brink, 1958
Moschorhynchus Broom, 1936
Mosellaesaurus Monard, 1846
Mosellosaurus Monard, 1847
Mygalesaurus Broom, 1942
Mygalesuchus Broom, 1942
Myloleucus Cope, 1872
Myobradypterygius von Huene, 1927
Myopterygius von Huene, 1923
Naiadochelys Hay, 1908
Najadochelys Hay, 1908
Namibius Kretzoi & Kretzoi, 2000
Nanchangosauridae
Nanchangosaurus Wang, 1959
Nanemys Agassiz, 1857
Nanhsiungoolithus Zhao, 1975
Nanictidops Broom, 1940
Nanictidopsidae
Nanictocephalus Broom, 1940
Nanictosaurus Broom, 1936
Nanictosuchus Broom, 1936
Nannoseps Sadlier, 1990
Nannosuchus Owen, 1879
Nanogorgon Broom & Robinson, 1948
Nanyangosaurus Xu, Zhao, Lu, Huang, Li & Dong, 2000
Naocephalus Cope, 1872
Naosaurus Cope, 1886
Nasoplanites Surkov, 1999
Natya Gray, 1840
Navahopodidae
Navajosuchus Mook, 1942
Nearctylodon Lewis, 1986
Nectemys Agassiz, 1857
Nectoportheus Cope, 1868
Nedcolbertia Kirkland, Britt, Whittle, Madsen & Burge, 1998
Negevodus Mazin, 1986
Nemegtosauridae Barrett & Upchurch, 1995
Neogongylophis Tokar, 1989
Neomegacyclops Boonstra, 1953
Neorotodactylus Casamiquela, 1980
Neosinasaurus Zhou, 2000
Neosodon Moussaye, 1885
Neotarentola Joger, 1984
Neotestudo Hewitt, 1931
Neotriton Bolkay, 1927
Neovenatoridae Benson, Carrano & Brusatte, 2010
Nesodactylus Colbert, 1969
Nessovemys Ckhikvadze, 1985
Neurodromicus Cope, 1873
Neustosaurus Raspail, 1842
Newtonella Broom, 1937
Niaftasuchus Ivachnenko, 1990
Nichollsia Druckenmiller & Russell, 2008
Nichollssaura Druckenmiller & Russell, 2009
Nikkasaurus Ivachnenko, 2000
Ninjemys Gaffney, 1992
Niphosaurus Evans, 1985
Nithosaurus Anon., 1838
Nitosauridae
Niuksenitia Tatarinov, 1977
Noasauridae Bonaparte & Powell, 1980
Nochelesaurus Haughton, 1929
Nodosauridae Marsh, 1890
Nominosuchus Efimov, 1996
Notaelurodon Broom, 1936
Notaelurops Broom, 1936
Noteosuchus Broom, 1925
Nothogomphodon Tatarinov, 1974
Nothosauravus Kuhn, 1958
Nothosauridae Seeley, 1889
Nothosaurops Leidy, 1870
Notictosaurus Broom, 1936
Notiosaurus Owen, 1884
Notoa Gray, 1863
Notocaiman Rusconi, 1937
Notomorpha Cope, 1872
Notophis Hallowell, 1856
Notosaurus Marsh, 1877
Notosollasia Broom, 1925
Notosuchus Woodward, 1896
Nyctiphruretidae Efremov, 1938
Nyctodactylus Marsh, 1881
Nyctosauridae Williston, 1903
Nympha Fitzinger, 1826
Nymphophidium Günther, 1864
Occidentalia Miller, 1971
Octagomphus Broom, 1919
Octipos Rafinesque, 1817
Octocynodon Broom, 1940
Octogomphus Broom, 1932
Ocyophis Cope, 1886
Odontochelone Stefano, 1902
Odontocyclops Keyser & Cruickshank, 1979
Odontomophis Rochebrune, 1884
Ogmodirus Williston & Moodie, 1913
Oligolycus Fritsch, 1894
Oligosaurus Seeley, 1881
Oligosimus Leidy, 1872
Oligostinus Hawkins, 1840
Oligotropis Duméril, 1853
Olivieria Brink, 1965
Olivierosuchus Kammerer & Sidor, 2002
Ollochirus Cope, 1892
Omphalosauridae
Oncopus Cope, 1892
Oneyda Gray, 1845
Onychichnium Dozy, 1935
Onychopus Fitzinger, 1843
Onychosaurus Nopcsa, 1902
Onychotria Gray, 1849
Onycopus Duméril & Bibron, 1841
Opeosaurus Meyer, 1847-55
Ophiacodontidae Nopska, 1923
Ophichelone Jarocki, 1822
Ophidiolithus Bronn, 1833
Ophidion Pomel, 1853
Ophimorphites Bronn, 1833
Ophinectes Rafinesque, 1817
Ophiodeirus Broom, 1914
Ophiolites Bronn, 1833
Ophiolithus Bronn, 1833
Ophiomorphites Bronn, 1833
Ophirhina Barboza de Bocage, 1882
Ophrias Rafinesque, 1815
Ophryocentron Fitzinger, 1843
Ophryocentrum Agassiz, 1846
Ophthalmophis Fitzinger, 1843
Opisthoctenodon Broom, 1904
Opisthopus Heyler & Lessertisseur, 1963
Orcauichnites Llompart, Casanovas & Santafe, 1984
Orchesteropus Frenguelli, 1950
Ordosia Hou Lianhai, 1979
Ordosiodon Young, 1961
Orinosaurus Lydekker, 1889
Ornatiovum Vialov, 1986
Ornitheocephalus Fitzinger, 1826
Ornithichnidium Kuhn, 1958
Ornithichnites Hitchcock, 1836
Ornithocheiridae Seeley, 1870
Ornithodesmidae Hooley, 1913
Ornithoidipus Sternberg, 1933
Ornithomerus Seeley, 1881
Ornithomimidae Marsh, 1890
Ornithopodichnites Llompart, Casanovas & Santafe, 1984
Ornithopterus Meyer, 1838
Ornithopus Hitchcock, 1848
Ornithosuchidae Huene, 1908
Orophicephalus van Hoepen, 1934
Orophis Fitzinger, 1843
Orophosaurus
Orosaurus Huxley, 1867
Orthopus Kutorga, 1838
Orthosaurus Geoffroy St Hilaire, 1835
Osceola Baird & Girard, 1853
Osmolskina Borsuk-Bialynicka & Evans, 2003
Oterognathus Dollo, 1889
Otischalkia Hunt & Lucas, 1991
Otolepis Strauch, 1866
Otouphepus Cushman, 1904
Otozoidae Lull, 1904
Otschevia Efimov, 1998
Otsheriidae
Oudenodontidae Broom, 1935
Oviraptoridae Barsbold, 1976
Owenettidae
Oxysdonsaurus Ambrosetti, 1890
Oxytropis Fitzinger, 1843
Ozraptor Long & Molnar, 1998
Pachycephalosauridae Sternberg, 1945
Pachycheilosuchus Rogers, 2003
Pachycostasaurus Cruickshank, Martill & Noe, 1996
Pachygonosaurus von Huene, 1916
Pachylobronchus Wagler, 1833
Pachypes Leonardi, Conti, Leonardi, Mariotti & Nicosia, 1974
Pachypleurosauridae Nopcsa, 1928
Pachyramphus Fitzinger, 1843
Pachyrhinos Broili & Schroeder, 1934
Pachysaurichnium Demathieu & Weidmann, 1982
Pachysauriscus Kuhn, 1959
Pachysaurus von Huene, 1908
Pachyspondylus Owen, 1859
Pachystropheidae
Pachystropheus von Huene, 1935
Pachysuchus Young, 1951
Pachyurus Philippi, 1899
Palaeagama Broom, 1926
Palaehatteria Haeckel, 1895
Palaelaphis Rochebrune, 1886
Palaeoblanus Schleich, 1988
Palaeochameleo Weigelt, 1930
Palaeocordylus Rocek, 1984
Palaeoctonus Cope, 1877
Palaeoelaphe Gilmore, 1938
Palaeogekko Schleich, 1987
Palaeohatteria Credner, 1888
Palaeomedusa Meyer, 1860
Palaeosphenodon Baur, 1889
Palaeovaranus Filhol, 1877
Palemys Gray, 1870
Paleoboa Schmidt, 1927
Paleotrionyx Schmidt, 1945
Paliguana Broom, 1903
Paloesaurus Geoffroy, 1833
Pampestudo Lindholm, 1929
Pantelosaurus von Huene, 1925
Pantosaurus Marsh, 1893
Pantydraco Galton, Yates & Kermack, 2007
Parabrontopodidae Apesteguía, 2005
Paracaptorhinus Watson, 1954
Parachelys Meyer, 1864
Parachirotheriidae
Paracrotalus Reuss, 1930
Paracynosuchus Broom, 1940
Paradendroolithus Zhou, Ren, Xu & Guan, 1998
Parageophis Duméril & Bocourt, 1883
Paralititan Smith, Lamanna, Lacovara, Dodson, Smith, Poole, Glegengack & Attia, 2001
Paralonectes Nichol & Brinkman, 1993
Paramecostinus Hawkins, 1840
Paramphibius Willard, 1935
Paraophthalmosaurus Arkhangelsky, 1997
Paraphrynonax Lutz & Mello, 1920
Paraprionosaurius Gilmore, 1938
Parasuchidae
Parasuchus Huxley, 1870
Parasynaptichnium Mietto, 1987
Paratetrasauropus Ellenberger, 1972
Paratrisauropus Ellenberger, 1972
Pardocephalus Broom, 1948
Pardosuchus Broom, 1908
Pareiasauridae Lydekker, 1889
Pareiasuchus Broom & Haughton, 1913
Pariemys Cope, 1895
Pariocela Fitzinger, 1843
Pariopeltis Fitzinger, 1843
Parringtonia von Huene, 1939
Parringtoniella Toerien, 1953
Parrishia Long & Murry, 1995
Parthanosaurus Skuphos, 1893
Parvinatator Nicholls & Brinkman, 1995
Parvobestiola Surkov, 1999
Pataeosaurus Fitzinger, 1843
Patricosaurus Seeley, 1887
Pattsia Lees & Mills, 1983
Pectenosaurus von Huene, 1902
Pectinodon Carpenter, 1982
Pectocephalus Gray, 1842
Pedaeosaurus Colbert & Kitching, 1981
Pediophis Fitzinger, 1843
Pediophylax Fitzinger, 1843
Pekinosaurus Hunt & Lucas, 1994
Pelamydoidis Fitzinger, 1861
Pelanomodon Broom, 1938
Pelecanimimus Pérez-Moreno, Sanz, Buscalioni, Moratalla, Ortega & Rasskin-Gutman, 1994
Pelictosuchus Broom, 1940
Pellegrinisaurus Salgado, 1996
Pelluma Rafinesque, 1815
Pelobatochelys Seeley, 1875
Pelophis Fitzinger, 1843
Pelosuchus Broom, 1905
Pentaedrusaurus Li Jinling, 1989
Pentasauropodidae
Pentatarsostinus Hawkins, 1840
Pentheres Fitzinger, 1861
Pentichnus Maerz, Kaesler & Hakes, 1976
Peratodactylopus Sarjeant & Mossman, 1978
Periscopus Fitzinger, 1843
Permocynodon Sushkin, 1929
Perodactylus Fitzinger, 1843
Perplexisaurus Tatarinov, 1997
Perretia Broadley, 1989
Pervushovisaurus Arkhangelsky, 1998
Pessopteryx Wiman, 1910
Petrodactylus Oken, 1816
Petrolacosauridae Peabody, 1952
Petrolus Rafinesque, 1815
Phaceloolithidae Zeng & Zhang, 1979
Phalangoptyon Wagler, 1833
Phantomosaurus Maisch & Matzke, 2000
Phayrea Theobald, 1868
Phenacophis Fitzinger, 1861
Phenacopus Demathieu & Oosterink, 1983
Phenascosaurus Barbour, 1920
Phenax Fitzinger, 1843
Philhydrus Brookes, 1828
Pholidolaemus Fitzinger, 1843
Pholidoscelis Fitzinger, 1843
Phoneosuchus Broom, 1929
Phosphatisaurus Bergounioux, 1955
Phosphatodraco Pereda-Suberbiola, Bardet, Jouve, Iarochène, Bouya & Amaghzaz, 2003
Phosphorosaurus Dollo, 1889
Photophilus Fitzinger, 1843
Phreatosaurus Efremov, 1954
Phreatosuchus Efremov, 1954
Phrynosaurus Fitzinger, 1843
Phthinosuchidae
Phuwiangosaurus Martin, Buffetaut & Suteethorn, 1994
Phygosaurus Arthaber, 1924
Phyllemys Schmidt, 1944
Phyllodontosuchus Harris, Lucas, Estep & Li, 2000
Phyllophilophis Garman, 1883
Phytosauridae Lydekker, 1888
Picrocleidus Andrews, 1909
Picrodon Seeley, 1898
Picunichnus Calvo, 1991
Piesigaster Seoane, 1880
Pilemophis Lydekker, 1888
Piocormus Wagner, 1852
Piptomerus Cope, 1887
Piramicephalosaurus Alifanov, 1988
Piratosaurus Leidy, 1865
Pisanosauridae Casamiquela, 1967
Pistosauridae Zittel, 1887
Pitekunsaurus Filippi & Garrido, 2008
Placochelyanus
Placochelyidae
Placodontidae Cope, 1871
Placovaranus Fejeváry, 1927
Planitorostris Surkov, 1999
Planodes Fitzinger, 1843
Plastremys Owen, 1881
Plataleorhynchus Howse & Milner, 1995
Plateosauravus von Huene, 1932
Plateosauridae Marsh, 1895
Platyarkia Bergounioux, 1953
Platycranion Jan, 1863
Platycranium van Hoepen, 1916
Platycyclops Broom, 1932
Platydaedalus Gistl, 1848
Platyognathidae
Platyoropha Haughton, 1929
Platypodosaurus Owen, 1880
Platypterna Hitchcock, 1848
Platyrhachis Cope, 1873
Plectropode Gray, 1842
Plectropus Hitchcock, 1848
Plesiopterys O'Keefe, 2004
Plesiosauridae Gray, 1825
Plesiosuchus Owen, 1884
Plestiodontoides Giglioli, 1874
Plestrodon Gray, 1841
Pleurodus Hancock & Atthey, 1872
Pleuropeltus Seeley, 1881
Pleuropterus Fitzinger, 1843
Pleurosauridae Lydekker, 1888
Pliosauridae Seeley, 1874
Plocederma Blyth, 1854
Plutoniosaurus Efimov, 1997
Pneustes Merrem, 1820
Pnigalion Watson, 1914
Podoclonium Cope, 1892
Podokesauridae Huene, 1914
Podopterygidae
Podorrhoa Fitzinger, 1843
Podurus Fischer, 1808
Poecilospondylus Case, 1910
Polacanthidae Wieland, 1911
Polemarchus Hitchcock, 1848
Polycotylidae Williston, 1908
Polydaedalus Wagler, 1830
Polydectes Cope, 1870
Polyechmatemys Ping, 1930
Polyodontosaurus Gilmore, 1932
Polyostinus Hawkins, 1840
Polystoma Kuhl & Hasselt, 1822
Ponerosteus Olshevsky, 2000
Pontopus Nopsca, 1923
Poposauridae Nopcsa, 1923
Porituberoolithus Zelenitsky, Hills & Currie, 1996
Porosteognathus V'iushkov, 1955
Potamophis Fitzinger, 1843
Pouitella Rage, 1988
Preprismatoolithus Zelenitsky & Hills, 1996
Pricea Broom, 1948
Priochondrus Rafinesque, 1815
Prionosaurus Gilmore, 1928
Priosphenodon Apesteguia & Novas, 2003
Prismatoolithidae Hirsch, 1994
Pristerodon Huxley, 1868
Pristerodontidae Haughton & Brink, 1954
Pristerognathidae
Pristerognathus Seeley, 1895
Pristerosaurus Boonstra, 1954
Pristicercus Fitzinger, 1843
Pristiodon Fitzinger, 1843
Proalligator Ambrosetti, 1890
Proalopecopsis Brink & Kitching, 1951
Proaulacocephalodon Toerien, 1955
Probainognathidae
Procerosaurus Fritsch & Bayer, 1905
Prochelone Haeckel, 1895
Prochirotherium Leonardi, 1953
Prochonias Cope, 1870
Procolophonidae Cope, 1889
Procolophonipus von Lilienstern, 1939
Procrocodilus Haeckel, 1895
Proctopus Fischer de Waldheim, 1813
Procynosuchidae Broom, 1937
Prodicynodon Broom, 1904
Prodiplocynodon Mook, 1941
Prodiplus Rafinesque, 1819
Proelginia Hartmann-Weinberg, 1937
Progalesaurus Sidor & Smith, 2004
Proganosaurus Portis, 1890
Proglyptosaurus Sullivan, 1989
Proiguana Filhol, 1877
Prolacertidae Parrington, 1935
Prolystrosaurus Haughton, 1917
Promalacoclemmys Reinach, 1900
Promoschorhynchus Brink, 1954
Propappus Seeley, 1888
Propelanomedon Toerien, 1955
Proplacerias Cruickshank, 1970
Propodinema Ambrosetti, 1890
Propseudopus Hilgendorf, 1883
Proptychophis Whistler & Wright, 1989
Protagras Cope, 1872
Protamnion Haeckel, 1895
Protecovasaurus Heckert, 2004
Protenodontosaurus Pinna, 1990
Proteosaurus Home, 1819
Proterochampsidae Romer, 1966
Proterosuchidae Broom, 1906
Protiguanodon Osborn, 1923
Protoavidae
Protoceratopsidae Granger & Gregory, 1923
Protocynodon Broom, 1949
Protohadros Head, 1998
Protoichthyosauridae
Protorosauridae Lydekker, 1888
Prototrisauropus Ellenberger, 1972
Protrachysaurus Stefano, 1903
Provipera Kinkelin, 1892
Prozostrodon Bonaparte & Barberena, 2001
Prymnomiodon Cope, 1861
Psammita Gray, 1840
Psammites Cocteau, 1837
Psammochelys Quenstedt, 1889
Psammophidion Fitzinger, 1861
Psammoplanis Fitzinger, 1843
Psammorrhoa Fitzinger, 1843
Psammoscopus Fitzinger, 1843
Psammuros Wagler, 1830
Psammurus Wiegmann, 1834
Psephosauriscus Rieppel, 2002
Pseudapistocalamus Lönnberg, 1900
Pseudoameiva Fitzinger, 1820
Pseudocadia Lindholm, 1931
Pseudochamaeleo Gravenhorst, 1807
Pseudochirotherium Biron & Dutuit, 1982
Pseudochrysemys Sukhanov & Narmandakh, 1976
Pseudodactylus Fitzinger, 1843
Pseudodipsas Peters, 1860
Pseudoequestris Varona, 1985
Pseudogeckoolithus Vianey-Liaud & Lopez-Martinez, 1997
Pseudogongylophis Tokar, 1989
Pseudohipposaurus Boonstra, 1952
Pseudoithycyphus Domergue, 1988
Pseudolagosuchus Arcucci, 1987
Pseudolycodon Peters, 1876
Pseudoprosymna Lindholm, 1902
Pseudotinosaurus Alifanov, 1991
Pseudotrionyx Dollo, 1886
Pseudotrisauropus Ellenberger, 1972
Pseuduromacer Werner, 1924
Psilosoma Swainson, 1839
Psilotrisauropus Ellenberger, 1972
Psittacosauridae Osborn, 1923
Ptenodracon Lydekker, 1888
Pteraichnidae Lockley et al., 1995
Pteranodontidae Marsh, 1876
Pterodactylidae Bonaparte, 1838
Pterodaustridae
Pteronotus Ranzani, 1839
Pterotherium Fischer, 1813
Pterycollasaurus Dollo, 1882
Ptomalestes Boonstra, 1954
Ptychocynodon Seeley, 1904
Ptychognathus Owen, 1860
Ptychopleura Fitzinger, 1843
Ptychosiagum Lydekker, 1890
Ptychosyagum Lydekker, 1889
Pukyongosaurus Dong, Paik & Kim, 2001
Pumilia Norell, 1989
Pumiliopareia Lee, 1997
Purranosaurus Rusconi, 1948
Purussaurus Rodrigues, 1892
Pygmaeochelys Laube, 1896
Pygodactylus Merrem, 1820
Pylaecephalus van Hoepen, 1934
Pylmophis Rochebrune, 1880
Pyrenodon Dujardin, 1843
Pythomorphus Fitzinger, 1843
Pythonia Blyth, 1859
Pythoniscus Philippi, 1899
Pyxiclemmys Gray, 1863
Pyxidemys Fitzinger, 1835
Qemetrisauropus Ellenberger, 1972
Qianichthyosaurus Li, 1999
Quadridigitus Biron & Dutuit, 1982
Quadropedia Aldrich & Jones, 1930
Quasianosteosaurus Maisch & Matzke, 2003
Quilmesaurus Coria, 2001
Rachitrema Sauvage, 1883
Raeticodactylus Stecher, 2008
Rageophis Wallach, 1986
Ramphosaurus Fitzinger, 1843
Rapara Gray, 1825
Rapator von Huene, 1932
Raphiosaurus Owen, 1841
Rebbachisauridae Bonaparte, 1997
Rectilinetopus Biron & Dutuit, 1982
Regenia Gray, 1845
Regisauridae
Regisaurus Mendrez, 1972
Regnosaurus Mantell, 1848
Reiszia Ivachnenko, 2000
Revueltosaurus Hunt, 1989
Rewaconodon Datta, Das & Luo, 2004
Rhabdodontidae Weishampel, Jianu, Csiki & Norman, 2003
Rhabdosaurus Bergounioux, 1955
Rhabdotocephalus Seeley, 1898
Rhacheosaurus Meyer, 1830
Rhachicephalodon Seeley, 1898
Rhacodracon Fitzinger, 1843
Rhadinosaurus Seeley, 1881
Rhadinosuchus von Huene, 1942
Rhamphinion Padian, 1984
Rhamphognathus Vogt, 1851
Rhamphorhynchidae Seeley, 1870
Rhamphosaurus Cope, 1872
Rhaphiosaurus Owen, 1841
Rhaticonia Broili, 1927
Rhigosaurus Colbert & Kitching, 1981
Rhinodipsas Fitzinger, 1843
Rhinopeltis Agassiz, 1844
Rhinopirus Merrem, 1820
Rhinoptyon Fitzinger, 1843
Rhinoscytale Fitzinger, 1843
Rhinosiphon Fitzinger, 1843
Rhipaeosauridae Chudinov, 1955
Rhodanosaurus Nopcsa, 1929
Rhomaleosauridae Nopcsa, 1928
Rhopalodon Fischer de Waldheim, 1841
Rhynchocephalia
Rhynchosauridae Huxley, 1887
Rhynchosuchus Huxley, 1859
Rhysosteus Agassiz, 1846
Rigalites von Huene, 1931
Rikisaurus Wiffen, 1990
Rileya von Huene, 1902
Rioarribasaurus Hunt & Lucas, 1991
Robertiidae Cluver & King, 1983
Romeriidae
Rosieria Godefroit & Battail, 1997
Rotadactylopus Ellenberger, 1972
Rothia Olson & Beerbower, 1953
Rotodactylus Peabody, 1948
Rotundichnus Franzisket, 1981
Rotundopteryx Maisch & Matzke, 2000
Rouleophis Chabanaud, 1916
Rugosuchus Wu, Cheng & Russell, 2001
Ruhuhucerberus Maisch, 2002
Rysosteus Owen, 1842
Saara Gray, 1845
Sabrina Girard, 1857
Saccostoma Fitzinger, 1843
Saharogecko Joger, 1984
Sahelogecko Joger, 1984
Sajkanosuchus Efimov, 1984
Salamandroides Jaeger, 1828
Saltosauropus Demathieu & Gaillard
Salvaguardia Oken, 1817
Samaria Novikov, 1991
Sangiorgiosaurus Brinkmann, 1998
Sanjuanophis Sullivan & Lucas, 1988
Santacruzodon Abdala & Ribeiro, 2003
Santanaraptor Kellner, 1999
Sarauba Bonaparte, 1831
Sarbieria Gray, 1869
Sarmatemys Chkhikvadze, 1983
Sarmatosuchus Sennikov, 1994
Sarouba Gray, 1827
Sarrouba Duméril & Bibron, 1836
Sarruba Fitzinger, 1826
Sarubeus Rafinesque, 1815
Satapliasaurus Gabuniya, 1951
Saturnalia Langer, Abdala, Richter & Benton, 1999
Sauravus Thévenin, 1906
Saurichnis Harkness, 1851
Sauridis Tschudi, 1845
Saurites Peters, 1869
Saurocainus Aymard
Saurochahpsa Bronn, 1848
Saurochampsa Wagler, 1830
Saurochelys Berthold, 1827
Saurodectes Modesto, Damiani, Neveling & Yates, 2003
Sauroidichnites Hitchcock, 1841
Sauromorus Pomel, 1853
Saurophidium Gervais, 1871
Sauropodichnus Calvo, 1991
Sauropodopus Ellenberger, 1972
Saurornithoididae Barsbold, 1974
Saurospondylus Seeley, 1865
Saurosuchus Reig, 1959
Scalopocephalus von Huene, 1937
Scalopocynodon Brink, 1961
Scalopodon Tatarinov, 1999
Scalopodontes Tatarinov, 2000
Scalopognathus Tatarinov, 1974
Scaloporhinus Boonstra, 1953
Scaloposauridae Broom, 1914
Scaloposaurus Owen, 1876
Scaloposuchus Broom, 1940
Scanisaurus Bogolyubov, 1911
Scansoriopterygidae
Scansoriopteryx Czerkas & Yuan, 2002
Scapanodon Broom, 1904
Scaphiops Gray, 1842
Scaphonychimus von Huene, 1928
Scapia Gray, 1869
Scaptophis Rochebrune, 1880
Scapyonyx Smith-Woodward, 1908
Scelidosauridae Cope, 1869
Scelocnemis Fitzinger, 1843
Scelodromus Fitzinger, 1843
Scelotretus Fitzinger, 1843
Scenodon Merriam, 1905
Scincoides Péron & Lesueur, 1818
Scincosaurus Fric, 1876
Scleromochlidae Huene, 1914
Scoliomus Williston & Case, 1915
Scoliophis Lesueur, 1818
Scolosaurus Nopcsa, 1928
Scullya Broom, 1929
Scutellosauridae
Scylacocephalus Broom, 1940
Scylacoides Broom, 1915
Scylacorhinus Broom, 1915
Scymnognathus Broom, 1912
Scymnorhinus Broom, 1914
Scymnosaurus Broom, 1903
Scytalophis de Rochebrune, 1880
Scythosuchus Sennikov, 1999
Seakatrisauropus Ellenberger, 1972
Seeleyosaurus White, 1940
Seemannia von Huene, 1958
Segnosauridae Perle, 1979
Seltopus Rafinesque, 1815
Semibipedopus Haubold, 1971
Senembis Rafinesque, 1815
Senryuemys Shikama, 1953
Sepsinus Rafinesque, 1815
Sericodon Meyer, 1845
Sericosaurus Leonhard & Bronn, 1845
Sesamodon Broom, 1905
Sesamondontoides Broom, 1950
Sesquipes Cope, 1896
Seytinia Wagler, 1828
Shaanbeikannemeyeria Cheng, 1980
Shanshanosaurus Dong, 1977
Shanxia Barrett, Hailu, Upchurch & Burton, 1998
Sharovisaurus Hecht & Hecht, 1984
Shartegosuchus Efimov, 1988
Shastasauridae Merriam, 1902
Shenzhousaurus Ji, Norell, Makovicky, Gao, Ji & Yuan, 2003
Shinisauroides Borsuk-Bialynicka, 1985
Shokawa Evans & Manabe, 1999
Shonisauridae
Shuvosaurus Chatterjee, 1993
Siamotyrannus Buffetaut, Suteethorn & Tong, 1996
Sibynon Fitzinger, 1843
Siguana Gray, 1830
Sikannisuchus Nicholls, Brinkman & Wu, 1998
Silesaurus Dzik, 2003
Silphedestes Broom, 1949
Silphedocynodon Brink, 1951
Silphedosuchus Tatarinov, 1977
Silpholestes Broom, 1948
Siluosaurus Dong, 1997
Silvestrosaurus Kuhn-Schnyder, 1990
Simbirskiasaurus Otschev & Efimov, 1985
Simoedosauridae Lemone, 1884
Simorhinellidae Mendrez, 1975
Simosauridae Romer, 1956
Simus Bonaparte, 1838
Sinasaurus Zhou, 2000
Siniliophis Sauvage, 1880
Sinovenator Xu, Norell, Wang, Makovicky & Wu, 2002
Sinraptoridae Currie & Zhao, 1993
Sintocephalus van Hoepen, 1934
Sironectes Cope, 1874
Sironota Agassiz, 1846
Skartopus Thulborn & Wade, 1984
Smilesaurus Broom, 1948
Smilodon Plieninger, 1846
Smilosuchus Long & Murry, 1995
Smithohydrophis Kharin, 1981
Solidopus Moodie, 1930
Sonorasaurus Ratkevich, 1998
Sontiochelys Stache, 1905
Sphaeropezium King, 1845
Sphaerops Gray, 1845
Sphenacodontidae Marsh, 1878
Sphenophis Fitzinger, 1843
Sphenosaurus Agassiz, 1849
Sphenosiagon Keqin & Fox, 1991
Sphenospondylus Seeley, 1882
Sphenosuchidae Haughton, 1924
Sphenosuchus Haughton, 1915
Spheroolithidae Zhao, 1979
Spheropezium King, 1845
Spheropezopus King, 1845
Spinoaequalis deBraga & Reisz, 1995
Spinosauridae Stromer, 1915
Spinosuchus von Huene, 1932
Spondylosaurus Fischer de Waldheim, 1845
Spondylosoma von Huene, 1942
Spondylurus Fitzinger, 1826
Squamata Oppel, 1811
Stagonolepididae Lydekker, 1887
Stahleckeria von Huene, 1935
Stasiotes Jan, 1862
Stauremys Gray, 1864
Staurichnium Leonardi, 1979
Staurikosauridae Galton, 1977
Steganoposaurus Branson & Mehl, 1932
Stegonosuchus von Huene, 1938
Stegosauridae Marsh, 1880
Steirophis Fitzinger, 1843
Stelliosaurus Gervais, 1871
Stenocybusidae
Stenodeiros Philippi, 1899
Stenometopon Boulenger, 1903
Stenopterygiidae Kuhn, 1934
Stenorhynchus Hemprich, 1820
Stenotholus Giffin, Gabriel & Johnson, 1988
Stereocephalus Lambe, 1902
Stereosaurus Seeley, 1869
Sternbergia Miller, 1971
Sterrholophus Marsh, 1891
Sthenarosaurus Watson, 1909
Stirophis Agassiz, 1846
Storthyggognathus Janensch, 1952
Stratiotosuchus Campos, Martin Suarez, Riff & Kellner, 2001
Strephon Goldfuss, 1820
Streptospondylus Meyer, 1830
Striodon Ailin Sun, 1978
Stromatoolithus Zhao Zikui, Ye Jie, Li Huamei, Zhao Zhenhua & Yan Zheng, 1991
Stromerosuchus Kuhn, 1936
Strongylostinus Hawkins, 1840
Struthiocephalellus Boonstra, 1955
Struthopus Ballerstedt, 1921
Styodactylus Goldfuss, 1820
Stypocemus Cope, 1885
Subtiliolithus Mikhailov, 1991
Succinodon von Huene, 1941
Suchodus Lydekker, 1890
Suchogorgon Tatarinov, 2000
Suchonosaurus Tverdokhlebova & Ivachnenko, 1994
Suchoprion Cope, 1877
Suevoleviathan Maisch, 1998
Sukhan Chkhikvadze, 1989
Sulcatidens Covacevich, Couper, Molnar, Witten & Young, 1990
Sulehusuchus Calvo & Spalletti, 1990
Sulmosaurus
Sultanuvaisia Nesov, 1981
Suminia Ivakhnenko, 1994
Supradapedon Chatterjee, 1980
Suuwassea Harris & Dodson, 2004
Svalbardosaurus Mazin, 1981
Syclacops Broom, 1913
Sycocephalus Brink & Kitching, 1953
Symphyrophus Cope, 1878
Synaptichnium Nopcsa
Sysphinctostoma Broili & Schröder, 1936
Tachybates Fitzinger, 1843
Tachymeris Wiegmann, 1834
Tachyophis Mertens, 1934
Tachyscelis Fitzinger, 1843
Tacuaremborum Mones, 1980
Tadzhikosuchus Yefimov, 1982
Taenieremias Boulenger, 1918
Taihangshania Young, 1979
Tamaulipasaurus Clark & Hernandez R., 1994
Tamboeria Seeley, 1904
Tamnophis Rochebrune, 1880
Tanaisosaurus Sennikov, 2001
Tangagorgon Boonstra, 1953
Tangarosaurus Benham, 1935
Tangasauridae Haughton, 1924
Tangvayosaurus Allain, Taquet, Battail, Dejax, Richir, Veran, Limon-Duparcmeur, Vacant, Mateus, Sayarath, Khenthavong & Phouyavong, 1999
Tanoa Gray, 1863
Tanystropheidae Gervais, 1859
Tanystus Fischer de Waldheim, 1834
Taognathus Broom, 1911
Tapayus Rafinesque, 1815
Tapejaridae Kellner, 1989
Tapelus Gray, 1825
Taphrosaurus Cope, 1870
Tapinocaninus Rubidge, 1991
Tapinocephalidae Lydekker, 1890
Tapinocephalus Owen, 1876
Tappenosauridae
Tarjadia Arcucci & Marsicano, 1998
Tarsoplectrus Lull, 1904
Tastavinsaurus Canudo, Royo-Torres & Cuenca-Bescós, 2008
Tatenectes O'Keefe & Wahl, 2003
Taupezia Delair, 1963
Taurocephalus Broom, 1928
Taurops Broom, 1912
Taveirosaurus Telles-Antunes & Sigogneau-Russell, 1991
Tecovasaurus Hunt & Lucas, 1994
Tectovaranus Mertens, 1942
Teguixin Gray, 1830
Tehuelchesaurus Rich, Vickers-Rich, Gimenez, Cuneo, Puerto & Vacca, 1999
Teilhardosaurus Shikama, 1942
Tejaporus Cope, 1900
Teleovipera Reuss, 1927
Telerpedon Fraas, 1867
Telerpeton Mantell, 1852
Tendaguria Bonaparte, Heinrich & Wild, 2000
Tendaguripteridae
Tenogaster Rafinesque, 1815
Tenuirostria Arkhangelsky, 1998
Teraterpeton Sues, 2003
Termatosaurus Plieninger, 1844
Tersomus Case, 1911
Testudines Linnaeus, 1758
Testudinites Weiss, 1830
Tetraceratops Matthew, 1908
Tetracheilostoma Jan, 1861
Tetragonosaurus Parks, 1931
Tetralophosaurus Olson, 1937
Tetraodon Broili & Schröder, 1936
Tetrapedos Jan, 1860
Tetrapodichnites Hitchcock, 1837
Tetrapodichnus Haubold, 1971
Tetrapodosauridae Sternberg, 1932
Teyutis Rafinesque, 1815
Thaisaurus Mazin, Suteethorn, Buffetaut, Jaeger & Helmcke-Ingavat, 1991
Thalassiodracon Storrs & Taylor, 1996
Thalassiosaurus Welles, 1943
Thalassonomosaurus Welles, 1943
Thalattosauridae Merriam, 1904
Thalattosuchia Fraas, 1901
Thalestris Gistl, 1868
Thamnobius Fitzinger, 1843
Thaumastosaurus De Stefano, 1904
Thecachampsoides Norell & Storrs, 1989
Thecodon Agassiz, 1844
Thecodontosauridae Lydekker, 1890
Thecospondylus Seeley, 1882
Thelegnathus Broom, 1905
Theleus Cope, 1893
Theriodesmus Seeley, 1887
Therioherpetidae Battail, 1991
Therioides Boonstra, 1953
Therizinosauridae Maleev, 1954
Theromus Seeley, 1894
Theropsis Cabrera, 1943
Theropsodon von Huene, 1950
Therosaurus Fitzinger, 1843
Thetia Gray, 1845
Thililua Bardet, Pereda Suberbiola & Jalil, 2003
Thinosaurus Marsh, 1872
Tholemys Andrews, 1921
Thrinaxodontidae
Thuringothyris Boy & Martens, 1991
Thyro Agassiz, 1844
Thyrosternum Agassiz, 1857
Thyrsidium Cope, 1874
Tianchiasaurus Dong, 1993
Tiaporus Cope, 1892
Tibetosaurus Yang, Liu & Zhang, 1982
Tichosteus Cope, 1878
Tienfucheloides Nesov, 1978
Tigricephalus Broom, 1948
Tigrisaurus Broom & George, 1950
Tigrisuchus Owen, 1876
Tikoepentapodiscus Ellenberger, 1972
Timanophon Novikov, 1991
Tisiphone Fitzinger, 1826
Titanognathus Broili & Schroeder, 1935
Titanogorgon Maisch, 2002
Titanophis Marsh, 1877
Titanosauridae Lydekker, 1885
Titanosuchidae Broom, 1903
Tomicosaurus Case, 1907
Topinctus Hasselt, 1823
Toxaspis Cope, 1895
Toyotamaphimeia Aoki, 1983
Trachelogerrhon Fitzinger, 1843
Trachelogerrhum Agassiz, 1846
Trachelosaurus Broili & Fisher, 1921
Trachycoelia Fitzinger, 1843
Trachydactyla Gray, 1840
Trachydermochelys Seeley, 1869
Trachygaster Wagler, 1830
Trachypeltis Fitzinger, 1843
Trachypilus Fitzinger, 1843
Trapeloidis Fitzinger, 1843
Trapetus Oken, 1817
Traversodontidae Huene, 1936
Traversodontoides Young, 1974
Tremamesacleis White, 1940
Triaenopholis Werner, 1924
Triaenopus Hitchcock, 1848
Triardipes Cope, 1900
Triassolestes Reig, 1963
Tribelesodon Bassani, 1886
Triceros Swainson, 1839
Trichasaurus Williston, 1913
Trichristolopus Ellenberger, 1972
Tricleidus Andrews, 1909
Tricuspes von Huene, 1933
Tridactylichnium Conti, Leonardi, Mariotti & Nicosia, 1977
Tridentulus Cope, 1892
Trigalus Rafinesque, 1815
Trigonophis Eichwald, 1831
Trilophosauridae Gregory, 1945
Trioceros Swainson, 1839
Tripeltis Cope, 1886
Trirachodontidae Crompton, 1955
Trirachodontoides Broom, 1932
Trisauropodiscus Ellenberger, 1972
Trisaurus Aldrich & Jones, 1930
Triseps Rafinesque, 1815
Trispondylus Williston, 1910
Trissia Gray, 1845
Tritheledon Broom, 1912
Tritheledontidae Broom, 1912
Tritonopsis Gistl, 1868
Tritro Gray, 1842
Tritropis Fitzinger, 1843
Tritylodontidae Cope, 1884
Tritylodontoides Fourie, 1963
Trochanterium von Huene, 1902
Trochorhinus Broom, 1936
Trochosaurus Haughton, 1915
Trochosuchus Broom, 1908
Troodontidae Gilmore, 1924
Tropidococcyx Günther, 1860
Tropidogeophis Müller, ?, 1878
Tropidogerrhon Fitzinger, 1843
Tropidogerrhum Agassiz, 1846
Tropidopeltis Fitzinger, 1843
Tropidophidion Werner, 1902
Tropidopholis Fitzinger, 1843
Tropidopilus Fitzinger, 1843
Tropidosaurus Gray
Tropidotragops Fitzinger, 1843
Tropinotus Kuhl & Hasselt, 1822
Trypanurgos Fitzinger, 1846
Tsiyuania Young, 1979
Tsylmosuchus Sennikov, 1990
Turanechis Cherlin, 1990
Turanosuchus Efimov, 1988
Turfanosuchus Young, 1973
Tutor Goldfuss, 1820
Tylanthera Cope, 1895
Typhloblanus Fitzinger, 1843
Typhlomorphus Fitzinger, 1843
Typhlus Duméril, 1870
Typicusichthyosaurus Yu, 2000
Typopus Hitchcock, 1848
Tyrannosauridae Osborn, 1906
Tytleria Theobald, 1868
Tzaganosuchus Efimov, 1983
Tzarevscya Reuss, 1930
Uatchitodon Sues, 1991
Uintasaurus Holland, 1924
Ulemica Ivachnenko, 1996
Ulemosauridae
Ulmosaurus Riabinin & Schtylko, 1932
Undorosaurus Efimov, 1999
Unguillosaurus Powell, 1979
Uperodonta Gray, 1842
Uraeus Wagler, 1830
Uralocynodon Tatarinov, 1987
Uralosaurus Sennikov, 1995
Uraniskosaurus Nopcsa, 1928
Uranocentrun Gray, 1845
Uranops Fitzinger, 1843
Urimacerina Amaral, 1929
Urobrachys Fitzinger, 1843
Urocrotalon Fitzinger, 1843
Urocrotalum Agassiz, 1846
Uroleptes Fitzinger, 1843
Uroleptis Duméril & Bibron, 1844
Uronautes Cope, 1877
Uronyx Rafinesque, 1815
Urosaura Peters, 1870
Urotornus Agassiz, 1846
Urypus Rafinesque, 1815
Utahdactylus Czerkas & Mickelson, 2002
Valdoraptor Olshevsky, 1991
Vancleavea Long & Murry, 1995
Varanoops Williston, 1914
Varanopidae
Varanopseidae
Varanopsidae Romer & Price, 1940
Varanopus Moodie, 1929
Velocisauridae Bonaparte, 1991
Venatoripes Frenguelli, 1950
Venenosaurus Tidwell, Carpenter & Meyer, 2001
Venjukoviidae Efremov, 1940
Vermiseps Greer & Cogger, 1985
Vialovophis Nessov, 1984
Viatkogorgon Tatarinov, 1999
Viatkosuchus Tatarinov, 1995
Vivaxosaurus Kalandadze & Kurkin, 2000
Vonhuenia Sennikov, 1992
Vulcanodontidae Cooper, 1984
Vytshegdosuchus Sennikov, 1988
Wakinosaurus Okazakai, 1992
Walgettosuchus von Huene, 1932
Walteria Mehl, 1931
Wangisuchus Young, 1964
Wangwusaurus Young, 1979
Wannaganosuchus Erickson, 1982
Wanosuchus Zhang Fakui, 1981
Warkalania Gaffney, Archer & White, 1992
Watongiidae
Watsoniella Broili & Schroeder, 1935
Wayaosaurus Zhou, 2000
Weigeltisauridae Romer, 1933
Weigeltisaurus Kuhn, 1939
Weigeltisuchus Kuhn, 1938
Weissia Branco, 1886
Whaitsiidae Haughton, 1918
Whitakersaurus Heckert, Lucas, Rinehart & Hun, 2008
Wimanius Maisch & Matzke, 1998
Wincania Gray, 1870
Winfieldia Romer, 1925
Wintonopus Thulborn & Wade, 1984
Wintonotitan Hocknull, White, Tischler, Cook et al., 2009
Woodbinesuchus Lee, 1997
Xenocretosuchus Tatarinov & Maschenko, 1999
Xenodiphyodon Sues & Olsen, 1993
Xenosuchus Rusconi, 1933
Xestorrhytias Meyer, 1842
Xestosaurus Peters, 1862
Xiangxipus Zeng, 1982
Xilousuchus Wu Xiaochun, 1981
Xinjiangchelys Ye Xiangkui, 1986
Xinpusaurus Yin, 2000
Xiphopeza Hitchcock, 1848
Xiphorhina Fitzinger, 1843
Xiphorhynchus Wagler, 1830
Xiphura Gray, 1830
Xiyukannemeyeria Liu & Li, 2003
Xuanhanosaurus Dong Zhiming, 1984
Xyrospondylus Reisz, Heaton & Pynn, 1982
Xystrolepis Tschudi, 1846
Yaleosaurus von Huene, 1932
Yangtzepus Young, 1960
Yasykovia Efimov, 1999
Yikezhaogia Li Yuhe, 1984
Yixianosaurus Xu & Wang, 2003
Yonghesuchus Wu, Liu & Li, 2002
Younginidae Broom, 1914
Youngopsis Broom, 1937
Youngosuchus Sennikov, 1985
Yunnanosauridae Young, 1942
Yunnanosaurus Young, 1942
Yunxianosaurus Li Zhengqi, 2001
Zablepsis Cope, 1895
Zacholomorphus Fitzinger, 1861
Zanclodon Plieninger, 1846
Zapsalis Cope, 1877
Zatomus Cope, 1871
Zhengichnus Zhen, Li, Rao & Hu, 1986
Zholsuchus Nesov & Cherepanov, 1989
Zhyrasuchus Nesov & Cherepanov, 1989
Zinnosaurus Boonstra, 1964
Zosuchus Pol & Norell, 2004
Zuniceratops Wolfe & Kirkland, 1998
Zupaysaurus Arcucci & Coria, 2003
Zygoramma Cope, 1870
- Reptilia Laurenti, 1768