Replies

Here's a list of known dinosaur genera, along with their dates of discovery. It's a lot of critters to go missing with no historical reference.

Aachenosaurus Smets, 1888* [nomen dubium; petrified wood]
"Abdallahsaurus" Maier, 2003 [nomen nudum --> Giraffatitan or Brachiosaurus]
Abelisaurus Bonaparte & Novas, 1985
Abrictosaurus Hopson, 1975
Abrosaurus Ouyang, 1989
Acanthopholis Huxley, 1867 [nomen dubium]
Achelousaurus Sampson, 1995
Achillobator Perle, Norell & Clark, 1999
Acracanthus Langston, 1947 vide Czaplewski, Cifelli & Langston, 1994 [nomen ex dissertatione --> Acrocanthosaurus]
Acrocanthosaurus Stovall & Langston, 1950
Actiosaurus Sauvage, 1882* [nomen dubium; probable ichthyosaur]
Adasaurus Barsbold, 1983
Aegyptosaurus Stromer, 1932
Aeolosaurus J. E. Powell, 1987
Aepisaurus Gervais, 1852 [nomen dubium]
Aetonyx Broom, 1911 [JSS --> Massospondylus]
Afrovenator Sereno, J. A. Wilson, Larsson, Dutheil & Sues, 1994
Agathaumas Cope, 1872 [nomen dubium; PSS --> Diceratops, Torosaurus, or Triceratops]
Aggiosaurus Ambayrac, 1913* [metriorhynchid crocodilian]
Agilisaurus Peng, 1990
Agnosphitys Fraser, Padian, Walkden & Davis, 2002
Agrosaurus Seeley, 1891 [JSS --> Thecodontosaurus]
Agustinia Bonaparte, 1999
Airakoraptor Perle, Norell & Clark, 1999 [nomen nudum]
Alamosaurus Gilmore, 1922
Alashansaurus Chure, 2001 [nomen ex dissertatione]
Albertosaurus Osborn, 1905
Albisaurus Fritsch, 1905* [nomen dubium; possible marine reptile]
Alectrosaurus Gilmore, 1933
Aletopelta Ford & Kirkland, 2001
Algoasaurus Broom, 1904 [nomen dubium]
Alioramus Kurzanov, 1976
Aliwalia Galton, 1985
Allosaurus Marsh, 1877
Alocodon Thulborn, 1973
Altirhinus Norman, 1998
Altispinax von Huene, 1923 [nomen dubium]
Alvarezsaurus Bonaparte, 1991
Alwalkeria Chatterjee & Creisler, 1994
Alxasaurus D. A. Russell & Dong, 1994 (not 1993)
Amargasaurus Salgado & Bonaparte, 1991
Amazonsaurus de Souza Carvalho, dos Santos Avilla & Salgado, 2003
Ammosaurus Marsh, 1891
Ampelosaurus Le Loeuff, 1995
Amphicoelias Cope, 1877 [nomen dubium]
Amphicoelicaudia Cheng, et al., 1994 vide Li, 1998 [nomen nudum --> Huabeisaurus]
Amphisaurus Marsh, 1882/Barkas, 1870 --> Anchisaurus
Amtosaurus Kurzanov & Tumanova, 1978 [nomen dubium]
Amurosaurus Bolotsky & Kurzanov, 1991
Amygdalodon Cabrera, 1947 [nomen dubium]
Anabisetia Coria & Calvo, 2002
Anasazisaurus Hunt & S. G. Lucas, 1993 [PSS --> Gryposaurus or Kritosaurus]
Anatosaurus Lull & Wright, 1942 [JSS --> Edmontosaurus]
Anatotitan Brett-Surman vide Chapman & Brett-Surman, 1990
Anchiceratops Brown, 1914
Anchisaurus Marsh, 1885
Andesaurus Calvo & Bonaparte, 1991
Angaturama Kellner & Campos, 1996 [JSS --> Irritator]
Animantarx Carpenter, Kirkland, Burge & Bird, 1999
Ankistrodon Huxley, 1865* [proterosuchian archosaur]
Ankylosaurus Brown, 1908
Anodontosaurus C. M. Sternberg, 1929 [JSS --> Dyoplosaurus]
Anoplosaurus Seeley, 1879 [nomen dubium]
Anserimimus Barsbold, 1988
Antarctosaurus von Huene, 1929
Antetonitrus Yates & Kitching, 2003
Anthodon Owen, 1876* [pareiasaur]
Antrodemus Leidy, 1870 [nomen dubium; PSS --> Allosaurus]
Apatodon Marsh, 1877 [nomen dubium; PSS --> Allosaurus]
Apatosaurus Marsh, 1877
Aragosaurus Sanz, Buscalioni, Casanovas & Santafe, 1987
Aralosaurus Rozhdestvensky, 1968
Araucanoraptor Novas, 1997 [nomen nudum]
Archaeoceratops Dong & Azuma, 1997
Archaeopteryx von Meyer, 1861* [bird]
Archaeoraptor Czerkas vide Sloan, 1999 vide Olson, 2000 [nomen rejectum (pending) --> Microraptor]
Archaeornis Petronievics vide Petronievics & Woodward, 1917* [nomen rejectum --> Archaeopteryx; bird]
Archaeornithoides Elzanowski & Wellnhofer, 1992
Archaeornithomimus D. A. Russell, 1972
Archaeovolans Czerkas & Xu, 2002* [bird, previously included in Archaeoraptor; PSS --> Yanornis]
Arctosaurus Adams, 1875* [nomen dubium; non-dinosaurian reptile]
Argentinosaurus Bonaparte & Coria, 1993
Argyrosaurus Lydekker, 1893
Aristosaurus van Hoepen, 1920 [JSS --> Massospondylus]
Aristosuchus Seeley, 1887 [nomen dubium]
"Arkanosaurus" Sattler, 1983 [nomen nudum]
Arrhinoceratops Parks, 1925
Arstanosaurus Suslov vide Suslov & Shilin, 1982 [nomen dubium]
Asiaceratops Nessov & Kaznyshkina vide Nessov, Kaznyshkina & Cherepanov, 1989
Asiamericana Nessov, 1995 [nomen dubium]
Asiatosaurus Osborn, 1924 [nomen dubium]
Astrodon Johnston, 1859 [nomen dubium; PSS --> Pleurocoelus]
Astrodonius Kuhn, 1961 [JOS --> Astrodon]
Atlantosaurus Marsh, 1877 [nomen dubium; PSS --> Apatosaurus or Camarasaurus]
Atlasaurus Monbaron, D. A. Russell & Taquet, 1999
Atlascopcosaurus T. Rich & P. Rich, 1989
Aublysodon Leidy, 1868 [nomen dubium; PSS --> Albertosaurus or Deinodon]
Aucasaurus Coria, Chiappe & Dingus, 2002
Augustia Bonaparte, 1998/Zariquiey, 1927 --> Agustinia
Austrosaurus Longman, 1933
Avaceratops Dodson, 1986
Avalonia Seeley, 1898/Walcott, 1889* --> Avalonianus [non-dinosaurian archosaur]
Avalonianus Kuhn, 1961* [nomen dubium; non-dinosaurian archosaur]
Aviatyrannis Rauhut, 2003
Avimimus Kurzanov, 1981
Avipes von Huene, 1932 [nomen dubium]
Avisaurus Brett-Surman & Paul, 1985* [enantiornithan bird]
Azendohsaurus Dutuit, 1972

Bactrosaurus Gilmore, 1933
Bagaceratops Maryanska & Osmólska, 1975
Bagaraatan Osmólska, 1996
Bahariasaurus Stromer, 1934
Bainoceratops Tereschenko & Alifanov, 2003
Bambiraptor Burnham, Derstler, Currie, Bakker, Zhou & Ostrom, 2000
Barapasaurus Jain, Kutty, Roy-Chowdhury & Chatterjee, 1975
Barosaurus Marsh, 1890
Barsboldia Maryanska & Osmólska, 1981
Baryonyx Charig & Milner, 1986
Bashunosaurus Li, 1998 [nomen nudum]
Basutodon von Huene, 1932* [nomen dubium; non-dinosaurian archosaur]
Bathygnathus Leidy, 1854* [nomen dubium; pelycosaur]
Becklespinax Olshevsky, 1991
"Beelemodon" Bakker, 1997 [nomen nudum]
Beipiaosaurus Xu, Tang & Wang, 1999
Bellusaurus Dong, 1990
Belodon von Meyer, 1842* [phytosaur]
Betasuchus von Huene, 1932 [nomen dubium]
Bienosaurus Dong, 2001
Bihariosaurus Marinescu, 1989
Bilbeyhallorum Burge, Bird, McClelland & Cicconetti, 1999 [nomen nudum --> Cedarpelta]
"Blancocerosaurus" Maier, 2003 [nomen nudum --> Giraffatitan or Brachiosaurus]
Blikanasaurus Galton & van Heerden, 1985
Borogovia Osmólska, 1987
Bothriospondylus Owen, 1875
Brachiosaurus Riggs, 1903
Brachyceratops Gilmore, 1914
Brachylophosaurus C. M. Sternberg, 1953
Brachypodosaurus Chakravarti, 1934 [nomen dubium]
Brachyrophus Cope, 1878 [JSS --> Camptosaurus]
Brachytaenius von Meyer, 1842* [nomen dubium; non-dinosaurian reptile]
Bradycneme Harrison & C. A. Walker, 1975
Brasileosaurus von Huene, 1931* [non-dinosaurian archosaur]
Breviceratops Kurzanov, 1990
Brontoraptor Redman, 1995 [nomen nudum]
Brontosaurus Marsh, 1879 [JSS --> Apatosaurus]
Bruhathkayosaurus Yadagiri & Ayyasami, 1987 [nomen dubium]
Bugenasaura Galton, 1995
Byranjaffia Novacek, 2002 [nomen nudum --> Byronosaurus]
Byronosaurus Norell, Makovicky & Clark, 2000

Caenagnathasia Currie, Godfrey & Nessov, 1994 (not 1993)
Caenagnathus R. M. Sternberg, 1940
Calamosaurus Lydekker, 1891 [nomen dubium]
Calamospondylus Fox vide [Anonymous] 1866 [nomen dubium]
Calamospondylus Lydekker, 1889/Fox vide [Anonymous] 1866 --> Calamosaurus
Callovosaurus Galton, 1980
Camarasaurus Cope, 1877
Camelotia Galton, 1985
Camposaurus Hunt, S. G. Lucas, Heckert, Sullivan, & Lockley, 1998
Camptonotus Marsh, 1879/Uhler, 1864 --> Camptosaurus
Camptosaurus Marsh, 1885
Campylodon von Huene, 1929/Cuvier & Valenciennes, 1832 --> Campylodoniscus
Campylodoniscus Kuhn, 1961 [nomen dubium]
"Capitalsaurus" Kranz, 1998 [nomen nudum]
Carcharodontosaurus Stromer, 1931
Cardiodon Owen, 1841 [nomen dubium; PSS --> Cetiosaurus]
Carnosaurus von Huene, 1929 [nomen nudum]
Carnotaurus Bonaparte, 1985
Caseosaurus Hunt, S. G. Lucas, Heckert, Sullivan, & Lockley, 1998
Cathetosaurus Jensen, 1988 [JSS --> Camarasaurus]
Caudipteryx Ji Q., Currie, Norell & Ji S., 1998
Caudocoelus von Huene, 1932 [JOS --> Teinurosaurus]
Caulodon Cope, 1877 [JSS --> Camarasaurus]
Cedarosaurus Tidwell, Carpenter & Brooks, 1999
Cedarpelta Carpenter, Kirkland, Burge & Bird, 2001
Centemodon Lea, 1856* [nomen dubium; phytosaur]
Centrosaurus Lambe, 1904/Fitzinger, 1843 --> Eucentrosaurus (unnecessary)
Ceratops Marsh, 1888/Rafinesque, 1815 --> Proceratops (unnecessary) [nomen dubium]
Ceratosaurus Marsh, 1884
Cetiosauriscus von Huene, 1927
Cetiosaurus Owen, 1841
Changtusaurus Zhao, 1983 [nomen nudum]
Chaoyangsaurus Zhao, Cheng & Xu, 1999
Charonosaurus Godefroit, Zan & Jin, 2000
Chasmosaurus Lambe, 1914
Chassternbergia Bakker, 1988
Cheneosaurus Lambe, 1917 [JSS --> Hypacrosaurus]
Chialingosaurus Young, 1959
Chiayusaurus Bohlin, 1953 [nomen dubium]
Chienkosaurus Young, 1942* [nomen dubium; crocodilian]
Chihuahuasaurus Ratkevich vide [Anonymous] 1997 [nomen nudum --> Sonorasaurus]
Chilantaisaurus Hu, 1964
Chindesaurus Long & Murry, 1995
Chingkankousaurus Young, 1958 [JSS --> Tarbosaurus]
Chinshakiangosaurus Yeh, 1975 [nomen nudum]
Chirostenotes Gilmore, 1924
Chondrosteosaurus Owen, 1876 [nomen dubium]
Chuandongocoelurus He, 1984
Chuanjiesaurus Fang, Pang, Lü, Zhang, Pan, Wang, Li & Cheng, 2000
Chubutisaurus del Corro, 1974
Chungkingosaurus Dong, Zhou & Zhang, 1983
Cionodon Cope, 1874 [nomen dubium]
Citipati Clark, Norell & Barsbold, 2001
Cladeiodon Owen, 1841* [nomen dubium; non-dinosaurian archosaur]
Claorhynchus Cope, 1892 [nomen dubium; PSS --> Triceratops]
Claosaurus Marsh, 1890
Clarencea Brink, 1959* [sphenosuchian archosaur]
Clasmodosaurus Ameghino, 1898 [nomen dubium]
Clepsysaurus Lea, 1851* [phytosaur]
Clevelanotyrannus Bakker, Williams & Currie vide Currie, 1987 [nomen nudum --> Nanotyrannus]
Coelophysis Cope, 1889
Coelosaurus Leidy, 1865/[Anonymous, but known to be Owen] 1854 --> Ornithomimus
Coeluroides von Huene & Matley, 1933 [nomen dubium]
Coelurosauravus Piveteau, 1926* [gliding prolacertiform reptile]
Coelurosaurus von Huene, 1929 [nomen nudum]
Coelurus Marsh, 1879
Colepiocephale Sullivan, 2003
Colonosaurus Marsh, 1872* [ichthyornithid bird, probably Ichthyornis]
Coloradia Bonaparte, 1978/Blake, 1863 --> Coloradisaurus
Coloradisaurus Lambert, 1983
Colossosaurus Mantell, 1849 vide Torrens, 1997 [nomen nudum --> Pelorosaurus]
Compsognathus Wagner, 1859
Compsosuchus von Huene & Matley, 1933
Conchoraptor Barsbold, 1986
Corythosaurus Brown, 1914
Craspedodon Dollo, 1883
Crataeomus Seeley, 1881 [nomen dubium; PSS --> Struthiosaurus]
Craterosaurus Seeley, 1874 [nomen dubium; PSS --> Regnosaurus]
Creosaurus Marsh, 1878 [nomen dubium; PSS --> Allosaurus]
Crichtonsaurus Dong, 2002
Cristatusaurus Taquet & D. A. Russell, 1998
Crosbysaurus Heckert, 2002 [nomen nudum; in abstract of dissertation]
Cryolophosaurus Hammer & Hickerson, 1994
Cryptodraco Lydekker, 1889 [JOS --> Cryptosaurus]
Cryptosaurus Seeley, 1869
Cryptovolans Czerkas, Zhang, J. Li & Y. Li, 2002
Cumnoria Seeley, 1888 [JSS --> Camptosaurus]
Cylindricodon Owen vide Ingles & Sawyer, 1979/Jaeger, 1828 --> Hylaeosaurus
Cystosaurus Geoffroy Saint-Hilaire, 1833* [nomen oblitum; probable teleosaurid crocodyliform]

Dacentrurus F. A. Lucas, 1902
Dachungosaurus Chao, 1985 [nomen nudum]
Dakosaurus Quenstedt, 1856* [crocodilian]
Damalasaurus Zhao, 1983 [nomen nudum]
Dandakosaurus Yadagiri, 1982 [nomen dubium]
Danubiosaurus Bunzel, 1871 [nomen dubium; PSS --> Struthiosaurus]
Daptosaurus Brown vide Chure & McIntosh, 1989 [nomen nudum --> Deinonychus]
Daspletosaurus D. A. Russell, 1970 [PSS --> Albertosaurus]
Dasygnathoides Kuhn, 1961* [ornithosuchid archosaur, JSS --> Ornithosuchus]
Dasygnathus Huxley, 1877/MacLeay, 1819* --> Dasygnathoides [ornithosuchid archosaur]
Datousaurus Dong & Tang, 1984
Deinocheirus Osmólska & Roniewicz, 1970
Deinodon Leidy, 1856 [nomen dubium; PSS --> Albertosaurus]
Deinonychus Ostrom, 1969
Deltadromeus Sereno, Duthiel, Iarochene, Larsson, Lyon, Magwene, Sidor, Varricchio & J. A. Wilson, 1996
Denversaurus Bakker, 1988
Deuterosaurus Eichwald, 1860* [therapsid]
Dianchungosaurus Young, 1982
Diceratops Hatcher vide Lull, 1905 [PSS --> Triceratops]
Diclonius Cope, 1876 [nomen dubium]
Dicraeosaurus Janensch, 1914
Didanodon Osborn, 1902 [nomen dubium; PSS --> Lambeosaurus]
Dilophosaurus Welles, 1970
Dimodosaurus Pidancet & Chopard, 1862 [nomen dubium; PSS --> Plateosaurus]
Dinheirosaurus Bonaparte & Mateus, 1999
Dinodocus Owen, 1884 [nomen dubium]
Dinosaurus Rütimeyer, 1856/Fischer de Waldheim, 1847 --> Gresslyosaurus
Dinotyrannus Olshevsky vide Olshevsky, Ford & Yamamoto, 1995 [JSS --> Tyrannosaurus]
Diplodocus Marsh, 1878
Diplotomodon Leidy, 1868 [nomen dubium; PSS --> Dryptosaurus]
Diracodon Marsh, 1881 [nomen dubium; PSS --> Stegosaurus]
Dolichosuchus von Huene, 1932 [nomen dubium]
Domeykosaurus Rubilar & Vargas vide [Anonymous] 2003 [nomen nudum; in May 29, 2003 Reuters news reports]
Doratodon Seeley, 1881* [crocodilian]
Doryphorosaurus Nopcsa, 1916 [JOS --> Kentrosaurus]
Draconyx Mateus & Antunes, 2001
Dracopelta Galton, 1980
Dravidosaurus Yadagiri & Ayyasami, 1979* [nomen dubium; probable plesiosaur]
Drinker Bakker, Galton, Siegwarth & Filla, 1990
Dromaeosauroides Christiansen & Bonde, 2003
Dromaeosaurus Matthew & Brown, 1922
Dromiceiomimus D. A. Russell, 1972
Dromicosaurus van Hoepen, 1920 [JSS --> Massospondylus]
Dryosaurus Marsh, 1894
Dryptosauroides von Huene & Matley, 1933 [nomen dubium]
Dryptosaurus Marsh, 1877
Dynamosaurus Osborn, 1905 [JSS --> Tyrannosaurus]
Dyoplosaurus Parks, 1924
Dysalotosaurus Virchow, 1919 [JSS --> Dryosaurus]
Dysganus Cope, 1876 [nomen dubium]
Dyslocosaurus McIntosh, Coombs & D. A. Russell, 1992
Dystrophaeus Cope, 1877
Dystylosaurus Jensen, 1985 [JSS --> Supersaurus]

Echinodon Owen, 1861
Edmarka Bakker, Kralis, Siegwarth & Filla, 1992
Edmontonia C. M. Sternberg, 1928
Edmontosaurus Lambe, 1917
Efraasia Galton, 1973
Einiosaurus Sampson, 1995
Elachistosuchus Janensch, 1949* [rhynchocephalian]
Elaphrosaurus Janensch, 1920
Elmisaurus Osmólska, 1981
Elopteryx Andrews, 1913
Elosaurus Peterson & Gilmore, 1902 [JSS --> Apatosaurus]
Elvisaurus Holmes, 1993 [nomen nudum --> Cryolophosaurus]
Emausaurus Haubold, 1991
Embasaurus Riabinin, 1931 [nomen dubium]
Enigmosaurus Barsbold & Perle, 1983 [JSS --> Erlikosaurus]
Eobrontosaurus Bakker, 1998
Eoceratops Lambe, 1915 [PSS --> Chasmosaurus]
"Eohadrosaurus" Kirkland, 1997 [nomen nudum --> Eolambia]
Eolambia Kirkland, 1998
Eoraptor Sereno, Forster, Rogers & Monetta, 1993
Eotyrannus Hutt, Naish, Martill, Barker & Newberry, 2001
Epachthosaurus J. Powell, 1990
Epanterias Cope, 1878 [nomen dubium; PSS --> Allosaurus or Saurophaganax]
Ephoenosaurus [Anonymous] 1839* [nomen nudum; PSS --> Machimosaurus; crocodilian]
Epicampodon Lydekker, 1885* [PSS --> Ankistrodon; proterosuchid archosaur]
Epidendrosaurus Zhang, Zhou, Xu & Wang, 2002
Equijubus You, Luo, Shubin, Witmer, Tang Z. & Tang F., 2003
Erectopus von Huene, 1922
Erliansaurus Xu, Zhang, Sereno, Zhao, Kuang, Han & Tan, 2002
Erlikosaurus Perle vide Barsbold & Perle, 1980
Eshanosaurus Xu, Zhao & Clark, 2001
Euacanthus Owen vide Tennyson, 1897 [nomen nudum; JOS --> Polacanthus]
Eucamerotus Hulke, 1872 [nomen dubium]
Eucentrosaurus Chure & McIntosh, 1989 [JOS --> Centrosaurus]
Eucercosaurus Seeley, 1879 [nomen dubium; PSS --> Acanthopholis]
Eucnemesaurus van Hoepen, 1920 [JSS --> Euskelosaurus]
Eucoelophysis Sullivan & S. G. Lucas, 1999
Eugongbusaurus Knoll, 1999
Euhelopus Romer, 1956
Euoplocephalus Lambe, 1910
Eupodosaurus Boulenger, 1891* [nomen dubium; probable marine reptile]
Eureodon Brown vide Olshevsky, 1991 [nomen nudum --> Tenontosaurus]
Eurolimnornis Kessler & Jurcsák, 1986* [probable bird]
Euronychodon Telles-Antunes & Sigogneau-Russell, 1991
Euskelosaurus Huxley, 1866
Eustreptospondylus Walker, 1964

Fabrosaurus Ginsburg, 1964 [nomen dubium]
Fenestrosaurus Osborn, 1924 [nomen nudum --> Oviraptor]
Ferganasaurus Alifanov & Averianov, 2003
Frenguellisaurus Novas, 1986 [JSS --> Herrerasaurus]
Fukuiraptor Azuma & Currie, 2000
Fukuisaurus Kobayashi & Azuma, 2003
Fulengia Carroll & Galton, 1977 [JSS --> Lufengosaurus]
Fulgurotherium von Huene, 1932
Fusinasus Hutt, 2002 [nomen nudum --> Eotyrannus]
"Futabasaurus" Lambert, 1990 [nomen nudum]

Gadolosaurus Saito, 1979 [nomen nudum]
Galesaurus Owen, 1859* [therapsid]
Gallimimus Osmólska, Roniewicz & Barsbold, 1972
Galtonia Huber, S. G. Lucas & Hunt, 1993
Gargoyleosaurus Carpenter, Miles & Cloward, 1998
Garudimimus Barsbold, 1981
Gasosaurus Dong, 1985
Gasparinisaura Coria & Salgado, 1996
Gastonia Kirkland, 1998
Gavinosaurus Kelly, 1998 [nomen nudum --> Eotyrannus]
Genusaurus Accarie, Beaudoin, Dejax, Friès, Michard & Taquet, 1995
Genyodectes Woodward, 1901
Geranosaurus Broom, 1911
Giganotosaurus Coria & Salgado, 1995
Gigantosaurus Seeley, 1869 [nomen dubium; PSS --> Pelorosaurus]
Gigantosaurus E. Fraas, 1908/Seeley, 1869 --> Tornieria
Gigantoscelus van Hoepen, 1916 [JSS --> Euskelosaurus]
Gigantspinosaurus [Anonymous] 1993 [nomen nudum]
Gilmoreosaurus Brett-Surman, 1979
Ginnareemimus Kaneko, 2000 [nomen nudum]
Giraffatitan Paul, 1988 [PSS --> Brachiosaurus]
Glyptodontopelta Ford, 2000
Gobipteryx Elzanowski, 1974* [enantiornithan bird]
Gobisaurus Vickaryous, A. P. Russell, Currie & Zhao, 2001
Gobititan You, Tang & Luo, 2003
Godzillasaurus Ikejiri, 2003 [nomen nudum; JOS --> Gojirasaurus (misspelling)]
Gojirasaurus Carpenter, 1997
Gondwanatitan Kellner & de Azevedo, 1999
Gongbusaurus Dong, Zhou & Zhang, 1983
Gongxianosaurus He, Wang, Liu S., Zhou, Liu T., Cai & Dai, 1998
Gorgosaurus Lambe, 1914 [PSS --> Albertosaurus]
Goyocephale Perle, Maryanska & Osmólska, 1982
Graciliceratops Sereno, 2000
Gracilisuchus Romer, 1972* [non-dinosaurian archosaur]
Gravisaurus Chabli vide Norman, 1989 [nomen nudum --> Lurdusaurus]
Gravitholus Wall & Galton, 1979 [nomen dubium]
Gresslyosaurus Rütimeyer, 1856 [PSS --> Plateosaurus]
Griphornis Owen vide Woodward, 1862* [nomen rejectum --> Archaeopteryx; bird]
Griphosaurus Wagner, 1861* [nomen rejectum --> Archaeopteryx; bird]
Gryponyx Broom, 1911 [JSS --> Massospondylus]
Gryposaurus Lambe, 1914
Guaibasaurus Bonaparte, Ferigolo & Ribeiro, 1999
Gwyneddosaurus Bock, 1945* [non-dinosaurian reptile]
Gyposaurus Broom, 1911 [JSS --> Massospondylus]

"Hadrosauravus" Lambert, 1990 [nomen nudum --> Gryposaurus]
Hadrosaurus Leidy, 1859 [nomen dubium]
Hallopus Marsh, 1881* [crocodilian]
Halticosaurus von Huene, 1908 [nomen dubium]
Hanssuesia Sullivan, 2003
"Hanwulosaurus" [Anonymous] 2001 [nomen nudum; in Xinhua News Service news articles]
Haplocanthosaurus Hatcher, 1903
Haplocanthus Hatcher, 1903/Agassiz, 1845 --> Haplocanthosaurus
Harpymimus Barsbold & Perle, 1984
Hecatasaurus Brown, 1910 [JOS --> Telmatosaurus]
Heilongjiangosaurus Li & Jin, 2001 [nomen nudum]
Heishansaurus Bohlin, 1953 [nomen dubium]
Helopus Wiman, 1929/Wagler, 1832 --> Euhelopus
Heptasteornis Harrison & C. A. Walker, 1975
Herbstosaurus Casamiquela, 1974* [pterosaur]
Herrerasaurus Reig, 1963
Hesperosaurus Carpenter, Miles & Cloward, 2001
Heterodontosaurus Crompton & Charig, 1962
Heterosaurus Cornuel, 1850 [JSS --> Iguanodon]
Heyuannia Lü, 2003
Hierosaurus Wieland, 1909
Hikanodon Keferstein, 1834 [JOS --> Iguanodon]
"Hironosaurus" Hisa, 1988 [nomen nudum]
"Hisanohamasaurus" Lambert, 1990 [nomen nudum]
Histriasaurus Dalla Vecchia, 1998
Homalocephale Maryanska & Osmólska, 1974
Honghesaurus [Anonymous] 1981 [nomen nudum --> Yandusaurus]
Hongshanosaurus You, Xu & Wang X., 2003
Hoplitosaurus F. A. Lucas, 1902
Hoplosaurus Seeley, 1881 [nomen dubium; PSS --> Struthiosaurus]
Hortalotarsus Seeley, 1894 [JSS --> Massospondylus]
Huabeisaurus Pang & Cheng, 2000
"Huaxiasaurus" Rey, 2002 [nomen nudum]
Huayangosaurus Dong, Tang & Zhou, 1982
Hudiesaurus Dong, 1997
Hulsanpes Osmólska, 1982
Hylaeosaurus Mantell, 1833
Hylosaurus Fitzinger, 1840 [JOS --> Hylaeosaurus]
Hypacrosaurus Brown, 1913
Hypselorhachis Charig, 1967* [nomen nudum; non-dinosaurian archosaur]
Hypselosaurus Matheron, 1869
Hypsibema Cope, 1869 [nomen dubium]
Hypsilophodon Huxley, 1869
Hypsirophus Cope, 1878 [nomen dubium; PSS --> Stegosaurus]

Ichabodcraniosaurus" Novacek, 1996 [nomen nudum]
Iguanodon Mantell, 1825
Iguanosaurus [Anonymous] 1824 [nomen nudum --> Iguanodon]
Iliosuchus von Huene, 1932
Ilokelesia Coria & Salgado, 2000 (not 1998)
Incisivosaurus Xu, Cheng, Wang & Chang, 2002
Indosaurus von Huene & Matley, 1933
Indosuchus von Huene & Matley, 1933
Ingenia Barsbold, 1981
Inosaurus de Lapparent, 1960 [nomen dubium]
Irritator Martill, Cruickshank, Frey, Small & Clarke, 1996
Isanosaurus Buffetaut, Suteethorn, Cuny, Tong, Le Loeuff, Khansubha & Jongautchariyakul, 2000
Ischisaurus Reig, 1963 [JSS --> Herrerasaurus]
Ischyrosaurus Hulke, 1874 vide Lydekker, 1888/Cope, 1869 [nomen dubium; PSS --> Pelorosaurus]
Isisaurus J. A. Wilson & Upchurch, 2003
"Issasaurus" Maier, 2003 [nomen nudum --> Dicraeosaurus]
Itemirus Kurzanov, 1976
Iuticosaurus Le Loeuff, 1993 [nomen dubium]

Jainosaurus Hunt, Lockley, S. G. Lucas & Meyer, 1995 (not 1994) [nomen dubium; PSS --> Titanosaurus]
Janenschia Wild, 1991
Jaxartosaurus Riabinin, 1937 [nomen dubium]
Jeholornis Zhou & Zhang, 2002 [JSS --> Shenzhouraptor; possible bird]
Jeholosaurus Xu, Wang & You, 2000
Jenghizkhan Olshevsky vide Olshevsky, Ford & Yamamoto, 1995 [JSS --> Tarbosaurus]
Jensenosaurus Olshevsky vide B. D. Curtice, Stadtman & L. J. Curtice, 1996 [nomen nudum --> Ultrasauros; JSS --> Supersaurus]
"Jiangjunmiaosaurus" [Anonymous] 1987 [nomen nudum --> Monolophosaurus & Sinraptor]
Jiangshanosaurus Tang, Kang, Jin, Wei & Wu, 2001
Jingshanosaurus Zhang & Yang, 1995
Jinzhousaurus Wang & Xu, 2001
Jixiangornis Ji Q., Ji S., Zhang H., You, Zhang J., Wang, Yuan & Ji X., 2002 [possible bird]
Jobaria Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, G. P. Wilson & J. A. Wilson, 1999
Jubbulpuria von Huene & Matley, 1933 [nomen dubium]
Jurapteryx Howgate, 1985* [PSS --> Archaeopteryx; bird]
"Jurassosaurus" Dong vide Holden, 1992 [nomen nudum --> Tianchisaurus]

"Kagasaurus" Hisa, 1988 [nomen nudum]
Kaijiangosaurus He, 1984
Kakuru Molnar & Pledge, 1980
Kangnasaurus Haughton, 1915
"Katsuyamasaurus" Lambert, 1990 [nomen nudum --> Fukuiraptor (likely)]
Kelmayisaurus Dong, 1973
Kentrosaurus Hennig, 1915/Lambe, 1904 --> Kentrurosaurus & Doryphorosaurus (both unnecessary)
Kentrurosaurus Hennig, 1916 [JOS --> Kentrosaurus]
Khaan Clark, Norell & Barsbold, 2001
"Kitadanisaurus" Lambert, 1990 [nomen nudum]
Kittysaurus Hargreaves, 2001 [nomen nudum --> Eotyrannus]
Klamelisaurus Zhao, 1993
Koparion Chure, 1994
Koreanosaurus H. M. Kim, 1979 [nomen nudum]
Kotasaurus Yadagiri, 1988
Kritosaurus Brown, 1910 [nomen dubium; PSS --> Anasazisaurus, Gryposaurus, and/or Naashoibitosaurus]
Kulceratops Nessov, 1995
Kunmingosaurus Chao, 1985
Kuszholia Nessov, 1992* [bird]

Labocania Molnar, 1974
Labrosaurus Marsh, 1879 [JSS --> Allosaurus]
Laelaps Cope, 1866/Koch, 1839 --> Dryptosaurus
Laevisuchus von Huene & Matley, 1933 [nomen dubium]
Lagerpeton Romer, 1971
Lagosuchus Romer, 1971 [nomen dubium]
Lamaceratops Alifanov, 2003
Lambeosaurus Parks, 1923
Lametasaurus Matley, 1923 [nomen dubium]
Lanasaurus Gow, 1975
Lancangosaurus Dong, Zhou & Zhang, 1983 [nomen nudum --> Datousaurus]
Lancanjiangosaurus Zhao, 1983 [nomen nudum]
Laornis Marsh, 1870* [bird]
Laosaurus Marsh, 1878 [nomen dubium]
Laplatasaurus von Huene, 1929
Lapparentosaurus Bonaparte, 1986
Leaellynasaura T. Rich & P. Rich, 1989
Leipsanosaurus Nopcsa, 1918 [PSS --> Struthiosaurus]
Lengosaurus Kelly, 1998 [nomen nudum --> Eotyrannus]
Leptoceratops Brown, 1914
Leptospondylus Owen, 1854 [JSS --> Massospondylus]
Lesothosaurus Galton, 1978 [PSS --> Fabrosaurus]
Lessemsaurus Bonaparte, 1999
Lewisuchus Romer, 1972* [non-dinosaurian archosaur]
Lexovisaurus Hoffstetter, 1957
Liaoceratops Xu, Makovicky, Wang, Norell & You, 2002
Liaoningosaurus Xu, Wang & You, 2001
Liassaurus Welles, H. P. Powell & Pickering vide Pickering, 1995 [nomen nudum]
Libycosaurus Bonarelli, 1947* [anthracothere mammal]
Ligabueino Bonaparte, 1996
"Ligomasaurus" Maier, 2003 [nomen nudum --> Giraffatitan or Brachiosaurus]
Likhoelesaurus Ellenberger, 1970* [nomen nudum; non-dinosaurian archosaur]
Liliensternus Welles, 1984
Limaysaurus Calvo & Salgado vide Novas, 1997 [nomen nudum --> Rayososaurus]
Limnornis Kessler & Jurcsák, 1984/Gould, 1839* --> Eurolimnornis & Palaeocursornis [probable bird]
Limnosaurus Nopcsa, 1899/Marsh, 1872 --> Telmatosaurus
Lirainosaurus Sanz, J. E. Powell, Le Loeuff, Martínez & Pereda-Suberbiola, 1999
Lisboasaurus Seiffert, 1973* [crocodilian]
Loncosaurus Ameghino, 1898 [nomen dubium]
Longisquama Sharov, 1970* [gliding reptile]
Longosaurus Welles, 1984
Lophorhothon Langston, 1960
Loricosaurus von Huene, 1929
Losillasaurus Casanovas, Santafe & Sanz, 2001
Lourinhanosaurus Mateus, 1998
Lourinhasaurus Dantas, Sanz, Da Silva, Ortega, Dos Santos & Cachao, 1998
Luanpingosaurus Cheng vide Chen, 1996 [nomen nudum --> Psittacosaurus]
Lucianosaurus Hunt & S. G. Lucas, 1994
Lufengocephalus Young, 1974 [JSS --> Lufengosaurus]
Lufengosaurus Young, 1941
Lukousaurus Young, 1948
Lurdusaurus Taquet & D. A. Russell, 1999
Lusitanosaurus de Lapparent & Zbyszewski, 1957
Lusotitan Antunes & Mateus, 2003
Lycorhinus Haughton, 1924

Macelognathus Marsh, 1884* [crocodilian]
Macrodontophion Zborzewski, 1834 [nomen dubium]
Macrophalangia C. M. Sternberg, 1932 [JSS --> Chirostenotes]
Macroscelosaurus Muenster vide von Meyer, 1847* [nomen nudum --> Tanystropheus (likely); prolacertiform reptile]
Macrurosaurus Seeley, 1876
"Madsenius" Lambert, 1990 [nomen nudum --> Allosaurus]
Magnirostris You & Dong, 2003
Magnosaurus von Huene, 1932
Magulodon Kranz, 1996 [nomen nudum]
Magyarosaurus von Huene, 1932
Maiasaura Horner & Makela, 1979
Majungasaurus Lavocat, 1955 [nomen dubium; PSS --> Majungatholus]
Majungatholus Sues & Taquet, 1979
Malawisaurus Jacobs, Winkler, Downs & Gomani, 1993
Maleevosaurus Carpenter, 1992 [JSS --> Tarbosaurus]
Maleevus Tumanova, 1987
Mamenchisaurus Young, 1954
Mandschurosaurus Riabinin, 1930 [nomen dubium; PSS -->Amurosaurus or Charonosaurus]
Manospondylus Cope, 1892 [nomen dubium; PSS --> Tyrannosaurus]
Marasuchus Sereno & Arcucci, 1994
Marmarospondylus Owen, 1875 [nomen dubium]
Marshosaurus Madsen, 1976
Masiakasaurus Sampson, Carrano & Forster, 2001
Massospondylus Owen, 1854
Megacervixosaurus Zhao, 1983 [nomen nudum]
Megadactylus Hitchcock, 1865/Fitzinger, 1843 --> Amphisaurus
"Megadontosaurus" Brown vide Ostrom, 1970 [nomen nudum --> Deinonychus & Microvenator]
Megalosaurus Buckland, 1824
Megapnosaurus Ivie, Slipinski & Wegrzynowicz, 2001
Megaraptor Novas, 1998
Melanorosaurus Haughton, 1924
Mendozasaurus González Riga, 2003
Merosaurus Welles, H. P. Powell & Pickering vide Pickering, 1995 [nomen nudum]
Metriacanthosaurus Walker, 1964
Microcephale Sereno, 1997 [nomen nudum]
Microceratops Bohlin, 1953 [nomen dubium]
Microcoelus Lydekker, 1893 [nomen dubium; PSS --> Saltasaurus]
Microdontosaurus Zhao, 1983 [nomen nudum]
Microhadrosaurus Dong, 1979 [nomen dubium]
Micropachycephalosaurus Dong, 1978
Microraptor Xu, Zhou & Wang, 2000
Microsaurops Kuhn, 1963 [JOS --> Microcoelus]
Microvenator Ostrom, 1970
"Mifunesaurus" Hisa, 1985 [nomen nudum]
Minmi Molnar, 1980
Mochlodon Seeley, 1881
"Mohammadisaurus" Maier, 2003 [nomen nudum --> Tornieria]
Mongolosaurus Gilmore, 1933 [nomen dubium]
Monkonosaurus Zhao vide Dong, 1990
Monoclonius Cope, 1876 [nomen dubium; PSS --> Centrosaurus or Styracosaurus]
Monolophosaurus Zhao & Currie, 1994 (not 1993)
Mononychus Perle, Norell, Chiappe & Clark, 1993/Schueppel, 1824 --> Mononykus
Mononykus Perle, Norell, Chiappe & Clark, 1993
Montanoceratops C. M. Sternberg, 1951
Morinosaurus Sauvage, 1874 [nomen dubium; PSS --> Pelorosaurus]
Morosaurus Marsh, 1878 [JSS --> Camarasaurus]
"Moshisaurus" Hisa, 1985 [nomen nudum --> Mamenchisaurus]
"Mtapaiasaurus" Maier, 2003 [nomen nudum --> Giraffatitan or Brachiosaurus]
"Mtotosaurus" Maier, 2003 [nomen nudum --> Dicraeosaurus]
Mussaurus Bonaparte & Vince, 1979
Muttaburrasaurus Bartholomai & Molnar, 1981
Mymoorapelta Kirkland & Carpenter, 1994

Naashoibitosaurus Hunt & S. G. Lucas, 1993 [PSS --> Gryposaurus or Kritosaurus]
Nanosaurus Marsh, 1877
Nanotyrannus Bakker, Williams & Currie, 1988 [PSS --> Tyrannosaurus]
Nanshiungosaurus Dong, 1979
Nanyangosaurus Xu, Zhao, Lü, Huang, Li & Dong, 2000
Nectosaurus Versluys, 1910/Merriam, 1905 --> Kritosaurus
Nedcolbertia Kirkland, Britt, Whittle, S. K. Madsen & Burge, 1998
Neimongosaurus Zhang, Xu, Zhao, Sereno, Kuang & Tan, 2001
Nemegtosaurus Nowinski, 1971
Neosaurus Gilmore vide Gilmore & Stewart, 1945/Nopcsa, 1923 --> Parrosaurus
Neosodon de la Moussaye, 1885
Neovenator Hutt, Martill & Barker, 1996
Neuquensaurus J. Powell, 1992
Newtonsaurus Welles vide Welles & Pickering, 1999 [nomen nudum]
Ngexisaurus Zhao, 1983 [nomen nudum]
Nigersaurus Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, G. P. Wilson & J. A. Wilson, 1999
Niobrarasaurus Carpenter, Dilkes & Weishampel, 1995
Nipponosaurus Nagao, 1936
Noasaurus Bonaparte & J. Powell, 1980
Nodocephalosaurus Sullivan, 1999
Nodosaurus Marsh, 1889
Nomingia Barsbold,Osmólska, Watabe, Currie & Tsogtbaatar, 2000
Nothronychus Kirkland & Wolfe, 2001
Notoceratops Tapia, 1918 [nomen dubium]
Notohypsilophodon Martínez, 1998
Nqwebasaurus de Klerk, Forster, Sampson, Chinsamy & Ross, 2000
"Nteregosaurus" Maier, 2003 [nomen nudum --> Janenschia]
Nuoersaurus Dong & Li, 1991 [nomen nudum; later spelled Nuoerosaurus and Nurosaurus but as yet not formally described and named]
Nuthetes Owen, 1854
Nyasasaurus Charig, 1967* [nomen nudum; non-dinosaurian archosaur]
"Nyororosaurus" Maier, 2003 [nomen nudum --> Dicraeosaurus]

Ohmdenosaurus Wild, 1978
Oligosaurus Seeley, 1881 [nomen dubium; PSS --> Rhabdodon]
Olorotitan Godefroit, Bolotsky & Alifanov, 2003
Omeisaurus Young, 1939
Omosaurus Owen, 1875/Leidy, 1856 --> Dacentrurus
Omnivoropteryx Czerkas & Ji Q., 2002
Onychosaurus Nopcsa, 1902 [nomen dubium; PSS --> Rhabdodon]
Opisthocoelicaudia Borsuk-Bialynicka, 1977
Oplosaurus Gervais, 1852 [nomen dubium; PSS --> Pelorosaurus]
Orcomimus Triebold, 1997 [nomen nudum]
Orinosaurus Lydekker, 1889 [JSS --> Euskelosaurus]
Ornatotholus Galton & Sues, 1983 [JSS --> Stegoceras]
Ornithodesmus Seeley, 1887
Ornithoides Osborn, 1924 [nomen nudum --> Saurornithoides]
Ornitholestes Osborn, 1903
Ornithomerus Seeley, 1881 [JSS --> Rhabdodon]
Ornithomimoides von Huene & Matley, 1933 [nomen dubium]
Ornithomimus Marsh, 1890
Ornithopsis Seeley, 1870 [nomen dubium]
Ornithosuchus Newton, 1894* [ornithosuchid archosaur]
Ornithotarsus Cope, 1869 [nomen dubium; PSS --> Hadrosaurus]
Orodromeus Horner & Weishampel, 1988
Orosaurus Huxley, 1867/Peters, 1862 --> Orinosaurus
Orthogoniosaurus Das-Gupta, 1931 [nomen dubium]
Orthomerus Seeley, 1883 [nomen dubium; PSS --> Telmatosaurus]
Oshanosaurus Chao, 1985 [nomen nudum]
Othnielia Galton, 1977
Ouranosaurus Taquet, 1976
Oviraptor Osborn, 1924
Ovoraptor Osborn, 1924 [nomen nudum --> Velociraptor]
Ozraptor Long & Molnar, 1998

Pachycephalosaurus Brown & Schlaikjer, 1943
Pachyrhinosaurus C. M. Sternberg, 1950
Pachysauriscus Kuhn, 1959 [nomen dubium; PSS --> Plateosaurus]
Pachysaurops von Huene, 1961 (not 1959) [JOS --> Pachysauriscus]
Pachysaurus von Huene, 1908/Fitzinger, 1843 --> Pachysauriscus
Pachyspondylus Owen, 1854 [JSS --> Massospondylus]
Palaeoctonus Cope, 1877* [nomen dubium; phytosaur]
Palaeocursornis Kessler & Jurcsák, 1986* [probable bird]
Palaeolimnornis Jurcsák & Kessler, 1985* [nomen nudum --> Palaeocursornis; probable bird]
Palaeopteryx Jensen, 1981
Palaeosauriscus Kuhn, 1959* [JOS --> Paleosaurus; non-dinosaurian archosaur]
Palaeosaurus Fitzinger, 1840/Geoffroy Saint-Hilare, 1833* --> Sphenosaurus [procolophonid]
Palaeosaurus Riley & Stutchbury, 1836/Geoffroy Saint-Hilaire, 1833* --> Paleosaurus [non-dinosaurian archosaur]
Palaeoscincus Leidy, 1856 [nomen dubium; PSS --> Edmontonia or Panoplosaurus]
Paleosaurus Riley & Stutchbury, 1840* [nomen dubium; non-dinosaurian archosaur]
Panoplosaurus Lambe, 1919
Paraiguanodon Brown vide Olshevsky, 1991 [nomen nudum --> Bactrosaurus]
Paralititan J. B. Smith, Lamanna, Lacovara, Dodson, J. R. Smith, Poole, Giegengack & Attia, 2001
Paranthodon Nopcsa, 1929
Pararhabdodon Casanovas-Cladellas, Santafe-Llopis & Isidro-Llorens, 1993
Parasaurolophus Parks, 1922
Pareiasaurus Owen, 1876* [non-dinosaurian reptile]
Parksosaurus C. M. Sternberg, 1937
Paronychodon Cope, 1876 [nomen dubium]
Parrosaurus Gilmore, 1945 [nomen dubium; PSS --> Hypsibema]
Parvicursor Karhu & Rautian, 1996
Patagonykus Novas, 1996
Patagosaurus Bonaparte, 1979
Patricosaurus Seeley, 1887* [lepidosaur/archosaur chimera]
Pawpawsaurus Lee, 1996
Pectinodon Carpenter, 1982 [nomen dubium; PSS --> Troodon]
Peishansaurus Bohlin, 1953 [nomen dubium]
Pekinosaurus Hunt & S. G. Lucas, 1994
Pelecanimimus Perez-Moreno, Sanz, Buscalioni, Moretalia, Ortega & Rasskin-Gutman, 1994
Pellegrinisaurus Salgado, 1996
Pelorosaurus Mantell, 1850
Peltosaurus Brown vide Chure & McIntosh, 1989 (see also Glut, 1972)/Cope, 1873 --> Sauropelta
Pentaceratops Osborn, 1923
Phaedrolosaurus Dong, 1973
Phuwiangosaurus Martin, Buffetaut & Suteethorn, 1994
Phyllodon Thulborn, 1973
Piatnitzkysaurus Bonaparte, 1979
Picrodon Seeley, 1898* [nomen dubium; PSS --> Avalonianus; non-dinosaurian archosaur]
Pinacosaurus Gilmore, 1933
Pisanosaurus Casamiquela, 1967
Piveteausaurus Taquet & Welles, 1977
Planicoxa DiCroce & Carpenter, 2001
Plateosauravus von Huene, 1932 [JSS --> Euskelosaurus]
Plateosaurus von Meyer, 1837
Platyceratops Alifanov, 2003
Pleurocoelus Marsh, 1888
Pleuropeltus Seeley, 1881 [nomen dubium; PSS --> Struthiosaurus]
Pneumatoarthrus Cope, 1870* [nomen dubium; marine turtle]
Podokesaurus Talbot, 1911 [PSS --> Coelophysis]
Poekilopleuron Eudes-Deslongchamps, 1838
Polacanthoides Nopcsa, 1928 [PSS --> Hylaeosaurus]
Polacanthus Owen vide [Anonymous] 1865
Polyodontosaurus Gilmore, 1932 [JSS --> Troodon]
Polyonax Cope, 1874 [JSS --> Triceratops]
Ponerosteus Olshevsky, 2000 [nomen dubium]
Poposaurus Mehl, 1915* [non-dinosaurian archosaur]
Prenocephale Maryanska & Osmólska, 1974
Priconodon Marsh, 1888 [nomen dubium]
Priodontognathus Seeley, 1875 [nomen dubium]
Probactrosaurus Rozhdestvensky, 1966
Proceratops Lull, 1906 [JOS --> Ceratops]
Proceratosaurus von Huene, 1926
Procerosaurus von Huene, 1902* [non-dinosaurian reptile]
Procerosaurus Fritsch, 1905/von Huene, 1902 --> Ponerosteus
Procheneosaurus Matthew, 1920 [JSS --> Lambeosaurus]
Procompsognathus E. Fraas, 1913
Prodeinodon Osborn, 1924 [nomen dubium]
Proiguanodon van den Broeck, 1900 [nomen nudum --> Iguanodon]
Prosaurolophus Brown, 1916
Protarchaeopteryx Ji Q. & Ji S., 1997
Protecovasaurus Heckert, 2002 [nomen nudum; in abstract of dissertation]
Protiguanodon Osborn, 1923 [JSS --> Psittacosaurus]
Protoavis Chatterjee, 1991
Protoceratops Granger & Gregory, 1923
Protognathosaurus Olshevsky, 1991
Protognathus Zhang, 1988/Basilewsky, 1950 --> Protognathosaurus
Protohadros Head, 1998
Protorosaurus von Meyer, 1830* [non-dinosaurian reptile]
Protorosaurus Lambe, 1914/von Meyer, 1830 --> Chasmosaurus
Protrachodon Nopcsa, 1923 [nomen nudum --> Orthomerus]
Proyandusaurus Knoll, 1999
Pseudolagosuchus Arcucci, 1987
Psittacosaurus Osborn, 1923
Pteropelyx Cope, 1889 [nomen dubium]
Pterospondylus Jaekel, 1913 [JSS --> Procompsognathus]
Pukyongosaurus Dong, Paik & H. J. Kim, 2001
Pycnonemosaurus Kellner & Campos, 2002
Pyroraptor Allain & Taquet, 2000

Qantassaurus T. Rich & Vickers-Rich, 1999
Qinlingosaurus Xue, Zhang & Bi, 1996
Quaesitosaurus Bannikov & Kurzanov vide Kurzanov & Bannikov, 1983
Quilmesaurus Coria, 2001

Rachitrema Sauvage, 1882* [nomen dubium; probable ichthyosaur]
Rahona Forster, Sampson, Chiappe & Krause, 1998/Griveaud, 1975 --> Rahonavis
Rahonavis Forster, Sampson, Chiappe & Krause, 1998
Rajasaurus J. A. Wilson, Sereno, Srivastava, Bhatt, Khosla & Sahni, 2003
Rapator von Huene, 1932 [nomen dubium]
Rapetosaurus Curry Rogers & Forster, 2001
Rayososaurus Bonaparte, 1996
Rebbachisaurus Lavocat, 1954
Regnosaurus Mantell, 1848
Revueltosaurus Hunt, 1989
Rhabdodon Matheron, 1869
Rhadinosaurus Seeley, 1881 [nomen dubium]
Rhodanosaurus Nopcsa, 1929 [JSS --> Struthiosaurus]
Rhoetosaurus Longman, 1925
Rhopalodon Fischer de Waldheim, 1841* [therapsid]
Ricardoestesia Currie, Rigby & Sloan, 1990
Rileya von Huene, 1902/Ashmead, 1888 --> Rileyasuchus [nomen dubium]
Rileyasuchus Kuhn, 1961 [nomen dubium]
Rinchenia Barsbold, 1997 [nomen nudum]
Rioarribasaurus Hunt & S. G. Lucas, 1991 [nomen rejectum --> Coelophysis]
Riojasaurus Bonaparte, 1969
Riojasuchus Bonaparte, 1969* [ornithosuchid archosaur]
Rocasaurus Salgado & Azpilicueta, 2000
Roccosaurus van Heerden vide Anderson & Cruickshank, 1978 [nomen nudum --> Melanorosaurus]
Ruehleia Galton, 2001
Rutellum Lhuyd, 1699 [nomen oblitum; pre-Linnaean name: cf. Delair & Sarjeant, 2002]

Saichania Maryanska, 1977
"Salimosaurus" Maier, 2003 [nomen nudum --> Giraffatitan or Brachiosaurus]
Saltasaurus Bonaparte & J. E. Powell, 1980
Saltopus von Huene, 1910
"Saltriosaurus" Dal Sasso, 2000 [nomen nudum]
"Sanchusaurus" Hisa, 1985 [nomen nudum --> Gallimimus]
Sangonghesaurus Zhao, 1983 [nomen nudum --> Tianchisaurus]
Sanpasaurus Young, 1944 [nomen dubium]
Santanaraptor Kellner, 1999
Sarcolestes Lydekker, 1893
Sarcosaurus Andrews, 1921
Saturnalia Langer, Abdala, Richter & Benton, 1999
Sauraechmodon Falconer, 1861 [nomen nudum --> Echinodon]
Saurolophus Brown, 1912
Sauropelta Ostrom, 1970
Saurophaganax Chure, 1995
Saurophagus Stovall vide Ray, 1941/Swainson 1831
Sauroplites Bohlin, 1953 [nomen dubium]
Sauroposeidon Wedel, Cifelli & Sanders, 2000
Saurornithoides Osborn, 1924
Saurornitholestes Sues, 1978
Scansoriopteryx Czerkas & Yuan, 2002
Scaphonyx Woodward, 1908* [rhynchosaur]
Scelidosaurus Owen, 1859
Scipionyx Dal Sasso & Signore, 1998
Scleromochlus Woodward, 1907* [non-dinosaurian archosaur]
Scolosaurus Nopcsa, 1928
Scrotum Brookes, 1763 [nomen oblitum; PSS --> Megalosaurus]
Scutellosaurus Colbert, 1981
Secernosaurus Brett-Surman, 1979
Segisaurus Camp, 1936
Segnosaurus Perle, 1979
Seismosaurus Gillette, 1991
"Selimanosaurus" Maier, 2003 [nomen nudum --> Dicraeosaurus]
Sellosaurus von Huene, 1908
Serendipaceratops T. Rich & Vickers-Rich, 2003
Shamosaurus Tumanova, 1983
Shanshanosaurus Dong, 1977 [JSS --> Tarbosaurus]
Shantungosaurus Hu, 1973
Shanxia Barrett, You, Upchurch & Burton, 1998
Shanyangosaurus Xue, Zhang & Bi, 1996
Shenzhouraptor Ji Q., Ji S., You, Zhang, Yuan, Ji X., Li J. L. & Li Y. X., 2002 [possible bird]
Shenzhousaurus Ji Q., Norell, Makovicky, Gao, Ji S. & Yuan, 2003
Shuangmiaosaurus You, Ji Q., Li J. & Li Y., 2003
Shunosaurus Dong, Zhou & Zhang, 1983
Shuvosaurus Chatterjee, 1993 [dinosaurian status currently in debate]
Shuvuuia Chiappe, Norell & Clark, 1998
Siamosaurus Buffetaut & Ingavat, 1986
Siamotyrannus Buffetaut, Suteethorn & Tong, 1996
Sigilmassasaurus D. A. Russell, 1996
Silesaurus Dzik, 2003
Siluosaurus Dong, 1997 [nomen dubium]
Silvisaurus Eaton, 1960
Sinocoelurus Young, 1942
Sinornithoides D. A. Russell & Dong, 1994 (not 1993)
Sinornithomimus Kobayashi & Lü, 2003
Sinornithosaurus Xu, Wang & Wu, 1999
Sinosauropteryx Ji Q. & Ji S., 1996
Sinosaurus Young, 1948
Sinovenator Xu, Norell, Wang, Makovicky & Wu, 2002
Sinraptor Currie & Zhao, 1994 (not 1993)
Smilodon Plieninger, 1846/Lund, 1842* --> Zanclodon [non-dinosaurian archosaur]
Sonorasaurus Ratkevich, 1998
Sphaerotholus Williamson & Carr, 2003 [PSS --> Prenocephale]
Sphenosaurus von Meyer, 1847* [procolophonid]
Sphenospondylus Seeley, 1882 [JSS --> Iguanodon]
Spinosaurus Stromer, 1915
Spinosuchus von Huene, 1932* [non-dinosaurian reptile]
Spondylosoma von Huene, 1942* [rauisuchian]
Squalodon Grateloup, 1840* [cetacean]
Staurikosaurus Colbert, 1970
Stegoceras Lambe, 1902
Stegopelta Williston, 1905
Stegosaurides Bohlin, 1953 [nomen dubium]
Stegosaurus Marsh, 1877
Stenonychosaurus C. M. Sternberg, 1932 [JSS --> Troodon]
Stenopelix von Meyer, 1857
Stenotholus Giffin, Gabriel & Johnson, 1988 [JSS --> Stygimoloch]
Stephanosaurus Lambe, 1914 [nomen dubium; PSS --> Lambeosaurus]
Stereocephalus Lambe, 1902/Lynch Arribalzaga, 1884 --> Euoplocephalus
Stereosaurus Seeley, 1869* [nomen nudum; probable plesiosaur]
Sterrholophus Marsh, 1891 [JSS --> Triceratops]
Stokesosaurus Madsen, 1974
Strenusaurus Bonaparte, 1969 [JSS --> Riojasaurus]
Streptospondylus von Meyer, 1830 [nomen dubium]
Struthiomimus Osborn, 1916
Struthiosaurus Bunzel, 1870
Stygimoloch Galton & Sues, 1983
Stygivenator Olshevsky vide Olshevsky, Ford & Yamamoto, 1995 [JSS --> Tyrannosaurus]
Styracosaurus Lambe, 1913
Succinodon von Huene, 1941* [mollusc borings]
Suchomimus Sereno, Beck, Dutheil, Gado, Larsson, Lyon, Marcot, Rauhut, Sadleir, Sidor, Varricchio, G. P. Wilson & J. A. Wilson, 1998
Suchoprion Cope, 1877* [nomen dubium; phytosaur]
"Sugiyamasaurus" Lambert, 1990 [nomen nudum]
Supersaurus Jensen, 1985
Symphyrophus Cope, 1878 [JSS --> Camptosaurus]
Syngonosaurus Seeley, 1879 [nomen dubium]
Syntarsus Raath, 1969/Fairmaire, 1869 --> Megapnosaurus
Syrmosaurus Maleev, 1952 [JSS --> Pinacosaurus]
Szechuanoraptor Chure, 2001 [nomen ex dissertatione]
Szechuanosaurus Young, 1942 [nomen dubium]

Talarurus Maleev, 1952
Tangvayosaurus Allain, Taquet, Battail, Dejax, Richir, Véran, Limon-Duparcmeur, Vacant, Mateus, Sayarath, Khenthavong & Phouyavong, 1999
Tanius Wiman, 1929
Tanycolagreus [Anonymous] 2001 [nomen nudum; in North American Museum of Ancient Life guidebook]
Tanystropheus von Meyer, 1855* [prolacertiform reptile]
Tanystrosuchus Kuhn, 1963 [nomen dubium; PSS --> Halticosaurus or Liliensternus]
Tapinocephalus Owen, 1876* [therapsid]
Tarascosaurus Le Loeuff & Buffetaut, 1991
Tarbosaurus Maleev, 1955
Tarchia Maryanska, 1977
Tatisaurus Simmons, 1965
Taveirosaurus Telles-Antunes & Sigogneau-Russell, 1991
Tawasaurus Young, 1982
Tazoudasaurus [Anonymous] 2003 [nomen nudum; in French press releases]
Technosaurus Chatterjee, 1984
Tecovasaurus Hunt & S. G. Lucas, 1994
Tehuelchesaurus T. Rich, Vickers-Rich, Gimenez, Cúneo, Puerta & Vacca, 1999
Teinurosaurus Nopcsa, 1928 vide Nopcsa, 1929 [nomen dubium]
Teleocrater Charig, 1956* [nomen nudum; non-dinosaurian archosaur]
Telmatosaurus Nopcsa, 1903
Tenantosaurus Brown vide Chure & McIntosh, 1989 [nomen nudum --> Tenontosaurus]
Tendaguria Bonaparte, Heinrich & Wild, 2000
Tenontosaurus Ostrom, 1970
Teratosaurus von Meyer, 1861* [nomen dubium; probable rauisuchid archosaur]
Termatosaurus von Meyer & Plieninger, 1844* [nomen dubium; phytosaur]
Tetragonosaurus Parks, 1931 [nomen rejectum --> Procheneosaurus]
Texasetes Coombs, 1995
Teyuwasu Kischlat, 1999
Thecocoelurus von Huene, 1923 [nomen dubium]
Thecodontosaurus Riley & Stutchbury, 1836
Thecospondylus Seeley, 1882 [nomen dubium]
Therizinosaurus Maleev, 1954
Therosaurus Fitzinger, 1840 [JOS --> Iguanodon]
Thescelosaurus Gilmore, 1913
Thespesius Leidy, 1856 [nomen dubium]
Thotobolosaurus Ellenberger, 1972 [nomen nudum]
Tianchisaurus Dong, 1993
Tianchungosaurus Zhao, 1983 [nomen nudum]
Tianzhenosaurus Pang & Cheng, 1998
Tichosteus Cope, 1877 [nomen dubium]
Tienshanosaurus Young, 1937
Timimus T. Rich & Vickers-Rich, 1994
Titanosaurus Lydekker, 1877 [nomen dubium]
Titanosaurus Marsh, 1877/Lydekker, 1877 --> Atlantosaurus [nomen dubium]
Tochisaurus Kurzanov & Osmólska, 1991
Tomodon Leidy, 1865/Dumeril 1853 --> Diplotomodon
Tonouchisaurus Barsbold, 1994 [nomen nudum]
Tornieria Sternfeld, 1911
Torosaurus Marsh, 1891
Torvosaurus Galton & Jensen, 1979
Trachodon Leidy, 1856 [nomen dubium]
Trialestes Bonaparte, 1982* [crocodilian]
Triassolestes Reig, 1963/Tillyard, 1918* --> Trialestes [non-dinosaurian archosaur]
Tribelesodon Bassani, 1886* [JSS --> Tanystropheus; prolacertiform reptile]
Triceratops Marsh, 1889
Trimucrodon Thulborn, 1973
Troodon Leidy, 1856
Tsagantegia Tumanova, 1993
Tsintaosaurus Young, 1958
Tugulusaurus Dong, 1973
Tuojiangosaurus Dong, Li, Zhou & Zhang, 1977
Turanoceratops Nessov & Kaznyshkina vide Nessov, Kaznyshkina & Cherepanov, 1989
Tylocephale Maryanska & Osmólska, 1974
Tylosteus Leidy, 1872 [nomen oblitum; SSS --> Pachycephalosaurus]
Tyrannosaurus Osborn, 1905
Tyreophorus von Huene, 1929 [nomen nudum]

Udanoceratops Kurzanov, 1992
Ugrosaurus Cobabe & Fastovsky, 1987 [JSS --> Triceratops]
Uintasaurus Holland, 1919 [JSS --> Camarasaurus]
Ultrasauros Jensen vide Olshevsky, 1991 [JSS --> Supersaurus]
Ultrasaurus H. M. Kim, 1983 [nomen dubium]
Ultrasaurus Jensen, 1985/H. M. Kim, 1983 --> Ultrasauros
Umarsaurus Maryanska & Osmólska, 1981 vide Olshevsky, 1992 [nomen nudum --> Barsboldia]
Unenlagia Novas & Puerta, 1997
Unicerosaurus Baugh vide Armstrong, 1987* [nomen nudum; fish]
Unquillosaurus J. E. Powell, 1979
Utahraptor Kirkland, Burge & Gaston, 1993

Valdoraptor Olshevsky, 1991
Valdosaurus Galton, 1977
Variraptor Le Loeuff & Buffetaut, 1998
Vectensia Delair, 1982 [nomen nudum --> Hylaeosaurus]
Vectisaurus Hulke, 1879 [JSS --> Iguanodon]
Velocipes von Huene, 1932 [nomen dubium]
Velociraptor Osborn, 1924
Velocisaurus Bonaparte, 1991
Venaticosuchus Bonaparte, 1971* [ornithosuchid archosaur]
Venenosaurus Tidwell, Carpenter & Meyer, 2001
Volkheimeria Bonaparte, 1979
Vulcanodon Raath, 1972

Wakinosaurus Okazaki, 1992 [nomen dubium]
Walgettosuchus von Huene, 1932 [nomen dubium]
Walkeria Chatterjee, 1987/Fleming, 1823 --> Alwalkeria
Walkersaurus Welles, H. P. Powell & Pickering vide Pickering, 1995 [nomen nudum]
"Wangonisaurus" Maier, 2003 [nomen nudum --> Giraffatitan or Brachiosaurus]
Wannanosaurus Hou, 1977
Wellnhoferia Elzanowski, 2001* [bird]
Wuerhosaurus Dong, 1973
Wyleyia Harrison & C. A. Walker, 1973* [enantiornithan bird]
Wyomingraptor [Anonymous] 1997 [nomen nudum --> Allosaurus]

Xenotarsosaurus Martinez, Gimenez, Rodriguez & Bochatey, 1986
Xiaosaurus Dong & Tang, 1983
Xuanhanosaurus Dong, 1984
Xuanhuasaurus Chao, 1985 [nomen nudum]

Yaleosaurus von Huene, 1932 [JSS --> Anchisaurus]
Yandusaurus He, 1979
Yangchuanosaurus Dong, Chang, Li & Zhou, 1978
Yaverlandia Galton, 1971
Yezosaurus Obata & Muramoto, 1977* [nomen nudum; marine reptile]
Yibinosaurus Ouyang vide [Anonymous: Chongqing Natural History Museum guidebook] 2001 [nomen nudum]
Yimenosaurus Bai vide Bai, Yang & Wang, 1990
Yingshanosaurus Zhou, 1984 [nomen nudum]
Yixianosaurus Xu & Wang, 2003
Yubasaurus He, 1975? [nomen nudum? --> Yandusaurus]
Yunnanosaurus Young, 1942

Zalmoxes Weishampel, Jianu, Csiki & Norman, 2003
Zanclodon Plieninger, 1846* [nomen dubium; non-dinosaurian archosaur]
Zapsalis Cope, 1876 [nomen dubium]
Zatomus Cope, 1871* [nomen dubium; non-dinosaurian archosaur]
Zephyrosaurus Sues, 1980
Zigongosaurus Hou, Chao & Chu, 1976 [JSS --> Mamenchisaurus]
Zizhongosaurus Dong, Zhou & Zhang, 1983
Zuniceratops Wolfe & Kirkland, 1998
Zupaysaurus Arcucci & Coria, 2003