DML Dinosaur Genera List

This page lists all known Dinosaur genera. It also includes all genera previously assigned to the Dinosauria that are no longer considered Dinosaurs, or that are now considered to be synonyms of other Dinosaur genera.

[It should be noted that whether a particular genus is currently considered dinosaurian or not can vary among paleontologists. For example, many dispute Mr. Olshevsky's listing of Archaeopteryx as no longer considered dinosaurian. --ed.]

Last updated January 26, 2004.

Genus names in boldface are scientifically valid; all other names are vernacular, preoccupied, or otherwise scientifically invalid.

[nomen nudum] = name lacking a description and/or a type specimen.
non = incorrect reference by first indicated author to a name attributed to second indicated author.
vide = name attributed to the first indicated author by the second.
/ = name preoccupied by the second indicated author.
* = not presently considered to be dinosaurian.

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