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Updated: June 19, 2010
Additions/Comments:

Explanation of terms used

nomen ex dissertatione = "Name from dissertation"
A name of a new taxon published without a description or diagnosis or reference to a description or diagnosis.

nomen dubium = "Doubtful name"
Name of doubtful status, not identifiable. Uncertain name; insufficient evidence to permit identification.

nomen nudum = "Naked name"
A name of a new taxon published without a description or diagnosis or reference to a description or diagnosis.

nomen rejectum = "Rejected name"
Name rejected permanently.

non
Incorrect reference.

vide
Name attributed to the first author by the second author.

JOS = Junior Objective Synonym
Homotypic or nomenclatural synonyms (different scientific names used for a single taxon).

JSS = Junior Subjective Synonym
Heterotypic or taxonomic synonyms (different scientific names used for a single taxon).

PSS = Possible Subjective Synonym of the indicated genus.

SSS = Suppressed Senior Synonym of the indicated genus.

A

• Aardonyx A.M. Yates, M.F. Bonnan, J. Neveling, A. Chinsamy and M.G. Blackbeard, 2009
• "Abdallahsaurus" G. Maier, 2003 [nomen nudum -> Giraffatitan or Brachiosaurus]
• Abelisaurus J.F. Bonaparte and F.E. Novas, 1985

Abelisaurus

• Abrictosaurus J.A. Hopson, 1975
• Abrosaurus Ouyang H., 1989
• Abydosaurus Chure, Britt, Whitlock and J. A. Wilson, 2010
• Acanthopholis T.H. Huxley, 1867 [nomen dubium]
• Achelousaurus S.D. Sampson, 1995

Achelousaurus

• Achillesaurus Martinelli and Vera, 2007
• Achillobator Perle, Norell and Clark, 1999
• Acracanthus W.R. Langston, 1947 vide N.J. Czaplewski, R.L. Cifelli and W.R. Langston, 1994 [nomen ex dissertatione -> Acrocanthosaurus]
• Acrocanthosaurus J.W. Stovall and W.R. Langston, 1950

Acrocanthosaurus

• Adamantisaurus Santucci and Bertini, 2006
• Adasaurus Barsbold, 1983
• Adeopapposaurus R.N. Martínez, 2009
• Aegyptosaurus E. Stromer, 1932
• Aeolosaurus J.E. Powell, 1987
• Aepisaurus P. Gervais, 1852 [nomen dubium]
• Aerosteon Sereno, R.N. Martínez, J.A. Wilson, Varricchio, Alcober and Larsson, 2008

Aerosteon

• Aetonyx Broom, 1911 [JSS -> Massospondylus
• Afrovenator Sereno, J.A. Wilson, Larsson, Dutheil and Sues, 1994

Afrovenator

• Agathaumas E.D. Cope, 1872 [nomen dubium; PSS -> Nedoceratops, Torosaurus or Triceratops]
• Agilisaurus Peng G., 1990
• Agnosphitys Fraser, Padian, Walkden and Davis, 2002
• Agrosaurus H.G. Seeley, 1891 [JSS -> Thecodontosaurus]
• Agujaceratops S.G. Lucas, R. Sullivan and Hunt, 2006
• Agustinia J.F. Bonaparte, 1999
• Airakoraptor Perle, Norell and Clark, 1999 [nomen nudum]
• Ajkaceratops Ösi, Butler and Weishampel, 2010
• Alamosaurus Gilmore, 1922
• Alashansaurus Chure, 2001 [nomen ex dissertatione]
• Alaskacephale R. Sullivan, 2006
• Albalophosaurus Ohashi and Barrett, 2009
• Albertaceratops Ryan, 2007

Albertaceratops

• Albertonykus N.R. Longrich and P.J. Currie, 2008
• Albertosaurus Osborn, 1905

Albertosaurus

• Alectrosaurus Gilmore, 1933

Alectrosaurus

• Aletopelta Ford and Kirkland, 2001
• Algoasaurus Broom, 1904 [nomen dubium]
• Alioramus Kurzanov, 1976

Alioramus

• Aliwalia Galton, 1985 [JSS -> Eucnemesaurus]
• Allosaurus O.C. Marsh, 1877

Allosaurus

• Alocodon Thulborn, 1973
• Altirhinus D.B. Norman, 1998
• Altispinax F. von Huene, 1923 [nomen dubium]
• Alvarezsaurus J.F. Bonaparte, 1991
• Alwalkeria Chatterjee and Creisler, 1994
• Alxasaurus D.A. Russell and Dong Z.M., 1994

Alxasaurus

• Amargasaurus Salgado and J.F. Bonaparte, 1991

Amargasaurus

• Amargatitanis Apesteguía, 2007
• Amazonsaurus Carvalho, Avilla and Salgado, 2003
• Ammosaurus O.C. Marsh, 1891
• Ampelosaurus LeLoeuff, 1995
• Amphicoelias E.D. Cope, 1877 [nomen dubium]
• Amphicoelicaudia Cheng Z., etal, 1994 vide Li K., 1998 [nomen nudum -> Huabeisaurus]
• Amphisaurus O.C. Marsh, 1882 / Barkas, 1870 -> Anchisaurus
• Amtosaurus Kurzanov and Tumanova, 1978 [nomen dubium]
• Amurosaurus Bolotsky and Kurzanov, 1991
• Amygdalodon Cabrera, 1947 [nomen dubium]
• Anabisetia R.A. Coria and Calvo, 2002
• Anasazisaurus Hunt and S.G. Lucas, 1993 [PSS –> Gryposaurus or Kritosaurus]
• Anatosaurus Lull and Wright, 1942 [JSS -> Edmontosaurus]
• Anatotitan Brett-Surman vide Chapman and Brett-Surman, 1990
• Anchiceratops Brown, 1914

Anchiceratops

• Anchiornis Xu X., Zhao Q., Norell, C. Sullivan, Hone, Erickson, Wang X.L., Han F. and Guo Y., 2009
• Anchisaurus O.C. Marsh, 1885
• Andesaurus Calvo and J.F. Bonaparte, 1991
• Angaturama Kellner and Campos, 1996 [JSS -> Irritator]
• Angulomastacator daviesi Wagner, J.R. and T.M. Lehman, 2009
• Aniksosaurus R.D. Martínez and F.E. Novas, 2006
• Animantarx Carpenter, Kirkland, Burge and Bird, 1999
• Ankylosaurus Brown, 1908

Ankylosaurus

• Anodontosaurus C.M. Sternberg, 1929 [JSS -> Dyoplosaurus]
• Anoplosaurus H.G. Seeley, 1879
• Anserimimus Barsbold, 1988
• Antarctopelta Salgado and Gasparini, 2006
• Antarctosaurus F. von Huene, 1929
• Antetonitrus Yates and Kitching, 2003
• Antrodemus J. Leidy, 1870 [nomen dubium; PSS -> Allosaurus]
• Apatodon O.C. Marsh, 1877 [nomen dubium; PSS -> Allosaurus]
• Apatosaurus O.C. Marsh, 1877

Apatosaurus

• Appalachiosaurus Carr, Williamson and Schwimmer, 2005
• Aragosaurus Sanz, Buscalioni, Casanovas-Cladellas (as Casanovas) and Santafe, 1987
• Aralosaurus Rozhdestvensky, 1968
• Araucanoraptor F.E. Novas, 1997 [nomen dubium -> Neuquenraptor]
• Archaeoceratops Dong Z.M. and Azuma, 1997
• Archaeodontosaurus Buffetaut, 2005
• Archaeoraptor Czerkas vide C.P. Sloan, 1999 vide Olson, 2000 [nomen rejectum (pending) -> Microraptor]
• Archaeornithoides Elzanowski and Wellnhofer, 1992
• Archaeornithomimus D.A. Russell, 1972
• Arenysaurus Pereda-Suberbiola, Canudo, Cruzado-Caballero, Barco, López-Martínez, Oms and Ruíz-Omeñaca, 2009
• Argentinosaurus J.F. Bonaparte and R.A. Coria, 1993

Argentinosaurus

• Argyrosaurus R. Lydekker, 1893
• Aristosaurus van Hoepen, 1920 [JSS -> Massospondylus]
• Aristosuchus H.G. Seeley, 1887 [nomen dubium]
• "Arkanosaurus" Sattler, 1983 [nomen nudum]
• Arkharavia V.R. Alifanov and Bolotsky, 2010
• Arrhinoceratops Parks, 1925
• Arstanosaurus Suslov vide Suslov and Shilin, 1982 [nomen dubium]
• Asiaceratops Nessov and Kaznyshkina vide Nessov, Kaznyshkina and Cherepanov, 1989
• Asiamericana Nessov, 1995 [nomen dubium]
• Asiatosaurus Osborn, 1924 [nomen dubium]
• Astrodon Johnston, 1859 [nomen dubium; PSS -> Pleurocoelus]
• Astrodonius Kuhn, 1961 [JOS -> Astrodon]
• Astrodontaurus C. Johnston, 1858 vide Kranz, 2004 [JOS -> Astrodon]
• Asylosaurus Galton, 2007
• Atlantosaurus O.C. Marsh, 1877 [nomen dubium; PSS –> Apatosaurus or Camarasaurus]
• Atlasaurus Monbaron, D.A. Russell and Taquet, 1999
• Atlascopcosaurus T. Rich and Vickers-Rich (as P. Rich), 1989
• Atrociraptor P.J. Currie and Varricchio, 2004
• Aublysodon J. Leidy, 1868 [nomen dubium; PSS –> Albertosaurus or Deinodon]
• Aucasaurus R.A. Coria, Chiappe and Dingus, 2002

Aucasaurus

• Augustia J.F. Bonaparte, 1998 / Zariquiey, 1927 -> Agustinia
• Auroraceratops You, Li D., Ji Q., Lamanna and Dodson, 2005
• Australodocus Remes, 2007
• Australovenator Scott A. Hocknull, Mathew A. White, Travis R. Tischler, Alex G. Cook, Naomi D. Calleja, Trish Sloan, David A. Elliott, 2009
• Austrocheirus Ezcurra, Agnolin and Novas, 2010
• Austroraptor F.E. Novas, Pol, Canale, Porfiri and Calvo, 2008
• Austrosaurus Longman, 1933
• Avaceratops Dodson, 1986
• Aviatyrannis Rauhut, 2003
• Avimimus Kurzanov, 1981

Avimimus

• Avipes F. von Huene, 1932 [nomen dubium]
• Azendohsaurus Dutuit, 1972 [non-dinosaurian archosaur]

B

• Bactrosaurus Gilmore, 1933

Bactrosaurus

• Bagaceratops Maryanska and Osmólska, 1975
• Bagaraatan Osmólska, 1996
• Bahariasaurus E. Stromer, 1934
• Bainoceratops Tereschenko and Alifanov, 2003
• Bakesaurus Zhou S., 2005 [nomen nudum]
• Balochisaurus Malkani, 2006
• Bambiraptor Burnham, Derstler, P.J. Currie, Bakker, Zhou Z. and Ostrom, 2000

Bambiraptor

• Banji Xu X. and Han F., 2010
• Baotianmansaurus Zhang Xingliao et al, 2009
• Barapasaurus Jain, Kutty, Roy-Chowdhury and Chatterjee, 1975
• Barilium Norman, 2010
• Barosaurus O.C. Marsh, 1890

Barosaurus

• Barrosasaurus L. Salgado and R.A. Coria, 2009
• Barsboldia Maryanska and Osmólska, 1981
• Baryonyx Charig and Milner, 1986

Baryonyx

• Bashunosaurus Li K., 1998 [nomen nudum; possibly -> Datousaurus]
• Baurutitan Kellner, Campos and Trotta, 2005
• Bayosaurus R.A. Coria, P.J. Currie and Carabajal, 2006 [nomen nudum]
• Becklespinax Olshevsky, 1991

Becklespinax

• "Beelemodon" Bakker, 1997 [nomen nudum]
• Beipiaosaurus Xu X., Tang Z. and Wang X.L., 1999

Beipiaosaurus

• Beishanlong Peter J. Makovicky et al, 2009
• Bellusaurus Dong Z.M., 1990
• Berberosaurus Allain, Tykoski, Aquesbi, Jalil, Monbaron, D.A. Russell and Taquet, 2007
• Betasuchus F. von Huene, 1932 [nomen dubium]
• Bienosaurus Dong Z.M., 2001
• Bihariosaurus Marinescu, 1989
• Bilbeyhallorum Burge, Bird, McClelland and Cicconetti, 1999 [nomen nudum -> Cedarpelta]
• Bissektipelta Parish and P.M. Barrett, 2004
• Bistahieversor T.D. Carr and T.E. Williamson, 2010
• "Blancocerosaurus" G. Maier, 2003 [nomen nudum -> Giraffatitan or Brachiosaurus]
• Blikanasaurus Galton and van Heerden, 1985
• Bonatitan Martinelli and Forasiepi, 2004
• Bonitasaura Apesteguía, 2004
• Borealosaurus You, Ji Q., Lamanna, Li J. and Li Y.X., 2004
• Borogovia Osmólska, 1987
• Bothriospondylus R. Owen, 1875
• Brachiosaurus Riggs, 1903

Brachiosaurus

• Brachyceratops Gilmore, 1914
• Brachylophosaurus C.M. Sternberg, 1953
• Brachypodosaurus Chakravarti, 1934 [nomen dubium]
• Brachyrophus E.D. Cope, 1878 [JSS -> Camptosaurus]
• Brachytrachelopan Rauhut, K. Remes, R. Fechner, G. Cladera, and P. Puerta, 2005
• Bradycneme Harrison and C.A. Walker, 1975 [nomen dubium; PSS -> Elopteryx]
• Breviceratops Kurzanov, 1990
• Brohisaurus Malkani, 2003
• Brontoraptor Redman, 1995 [nomen nudum]
• Brontosaurus O.C. Marsh, 1879 [JSS -> Apatosaurus]
• Bruhathkayosaurus Yadagiri and Ayyasami, 1987 [nomen dubium]
• Bugenasaura P.M. Galton, 1995 [PSS -> Thescelosaurus]
• Buitreraptor Makovicky, Apesteguía and Agnolín, 2005
• Byranjaffia Novacek, 2002 [nomen nudum -> Byronosaurus]
• Byronosaurus Norell, Makovicky and Clark, 2000

C

• Caenagnathasia P.J. Currie, Godfrey and Nessov, 1994 (not 1993)
• Caenagnathus R.M. Sternberg, 1940
• Calamosaurus R. Lydekker, 1891 [nomen dubium]
• Calamospondylus W.D. Fox vide [Anonymous], 1866 [nomen dubium]
• Calamospondylus R. Lydekker, 1889 / W.D. Fox vide [Anonymous], 1866 -> Calamosaurus
• Callovosaurus Galton, 1980
• Camarasaurus E.D. Cope, 1877

Camarasaurus

• Camelotia Galton, 1985
• Camposaurus Hunt, S.G. Lucas, Heckert, R. Sullivan and Lockley, 1998
• Camptonotus O.C. Marsh, 1879 / Uhler, 1864 -> Camptosaurus
• Camptosaurus O.C. Marsh, 1885

Camptosaurus

• Campylodon F. von Huene, 1929 / G. Cuvier and A. Valenciennes, 1832 -> Campylodoniscus
• Campylodoniscus Kuhn, 1961 [nomen dubium]
• "Capitalsaurus" Kranz, 1998 [nomen nudum]
• Carcharodontosaurus E. Stromer, 1931

Carcharodontosaurus

• Cardiodon R. Owen, 1841 [nomen dubium; PSS -> Cetiosaurus]
• Carnosaurus F. von Huene, 1929 [nomen nudum]
• Carnotaurus J.F. Bonaparte, 1985

Carnotaurus

• Caseosaurus Hunt, S.G. Lucas, Heckert, R. Sullivan and Lockley, 1998
• Cathartesaura Gallina and Apesteguía, 2005
• Cathetosaurus Jensen, 1988 [JSS -> Camarasaurus]
• Caudipteryx Ji Q., P.J. Currie, Norell and Ji S., 1998

Caudipteryx

• Caudocoelus F. von Huene, 1932 [JOS -> Teinurosaurus]
• Caulodon E.D. Cope, 1877 [JSS -> Camarasaurus]
• Cedarosaurus Tidwell, Carpenter and Brooks, 1999
• Cedarpelta Carpenter, Kirkland, Burge and Bird, 2001
• Cedrorestes Gilpin, DiCroce and Carpenter, 2006
• Centrosaurus Lambe, 1904 / L.J. Fitzinger, 1843 -> Eucentrosaurus

Centrosaurus

• Cerasinops Chinnery and Horner, 2007
• Ceratonykus Alifanov and Barsbold, 2009
• Ceratops O.C. Marsh, 1888 / C.S. Rafinesque, 1815 -> Proceratops [nomen dubium]
• Ceratosaurus O.C. Marsh, 1884

Ceratosaurus

• Cetiosauriscus F. von Huene, 1927
• Cetiosaurus R. Owen, 1841
• Changchunsaurus Zan S.Q., Chen J., Jin L.Y. and Li T., 2005
• Changtusaurus Zhao X., 1983 [nomen nudum]
• Chaoyangsaurus Zhao X., Cheng Z. and Xu X., 1999
• Charonosaurus Godefroit, Zan and Jin L., 2000
• Chasmosaurus Lambe, 1914

Chasmosaurus

• Chassternbergia Bakker, 1988
• Chebsaurus Mahammed, Läng, Mami, Mekahli, Benhamou, Bouterfa, Kacemi, Chérief, Chaouati and Taquet, 2005
• Cheneosaurus Lambe, 1917 [JSS -> Hypacrosaurus]
• Chiayusaurus Bohlin, 1953 [nomen dubium]
• Chihuahuasaurus Ratkevich vide [Anonymous], 1997 [nomen nudum -> Sonorasaurus]
• Chilantaisaurus Hu S., 1964
• Chindesaurus R.A. Long and Murry, 1995
• Chingkankousaurus Yang Z.J. (as Young C.C.), 1958 [JSS -> Tarbosaurus]
• Chinshakiangosaurus Yeh, 1975 vide Dong Z.M., 1992 vide P. Upchurch, P.M. Barrett, Zhao X. and Xu X., 2007
• Chirostenotes Gilmore, 1924

Chirostenotes

• Chondrosteosaurus R. Owen, 1876 [nomen dubium]
• Chuandongocoelurus He X., 1984
• Chuanjiesaurus Fang, Pang, Lü, Zhang Z., Pan, Wang Y., Li X.K. and Cheng Z., 2000
• Chubutisaurus del Corro, 1974
• Chungkingosaurus Dong Z.M., Zhou S. and Zhang Y.H., 1983
• Cinizasaurus Heckert, 1997 vide Nesbitt, Irmis and Parker, 2007 [nomen ex dissertatione]
• Cionodon E.D. Cope, 1874 [nomen dubium]
• Citipati Clark, Norell and Barsbold, 2001
• Claorhynchus E.D. Cope, 1892 [nomen dubium; PSS -> Triceratops]
• Claosaurus O.C. Marsh, 1890
• Clasmodosaurus F. Ameghino, 1898 [nomen dubium]
• Clevelanotyrannus Bakker, Williams and P.J. Currie vide P.J. Currie, 1987 [nomen nudum -> Nanotyrannus]
• Coahuilaceratops Loewen, S.D. Sampson, E.K. Lund, Farke, Aguillón Martínez, de Leon, Rodríguez de la Rosa, Getty and Eberth, 2009 [nomen manuscriptum]
• Coelophysis E.D. Cope, 1889

Ceolophysis

• Coelosaurus J. Leidy, 1865 / [Anonymous, known to be R. Owen] 1854 -> Ornithomimus
• Coeluroides F. von Huene and Matley, 1933 [nomen dubium]
• Coelurosaurus F. von Huene, 1929 [nomen nudum]
• Coelurus O.C. Marsh, 1879

Coelurus

• Colepiocephale R. Sullivan, 2003
• Coloradia J.F. Bonaparte, 1978 / Blake, 1863 -> Coloradisaurus
• Coloradisaurus Lambert, 1983
• Colossosaurus G. Mantell, 1849 vide Torrens, 1997 [nomen nudum -> Pelorosaurus]
• Comanchesaurus Hunt, 1994 vide Nesbitt, Irmis and Parker, 2007 [nomen ex dissertatione]
• Compsognathus J.A. Wagner, 1859

Compsognathus

• Compsosuchus F. von Huene and Matley, 1933
• Conchoraptor Barsbold, 1986

Conchoraptor

• Condorraptor Rauhut, 2005
• Corythosaurus Brown, 1914

Corythosaurus

• Craspedodon L. Dollo, 1883
• Crataeomus H.G. Seeley, 1881 [nomen dubium; PSS -> Struthiosaurus]
• Craterosaurus H.G. Seeley, 1874 [nomen dubium; PSS -> Regnosaurus]
• Creosaurus O.C. Marsh, 1878 [nomen dubium; PSS -> Allosaurus]]
• Crichtonsaurus Dong Z.M., 2002
• Cristatusaurus Taquet and D.A. Russell, 1998
• Cruxicheiros R.B.J. Benson and J.D. Radley, 2009
• Cryolophosaurus Hammer and Hickerson, 1994

Cryolophosaurus

• Cryptodraco R. Lydekker, 1889 [JOS -> Cryptosaurus]
• Cryptoraptor Hunt, 1994 vide Nesbitt, Irmis and Parker, 2007 [nomen ex dissertatione]
• Cryptosaurus H.G. Seeley, 1869
• Cryptovolans Czerkas, Zhang D., Li J. and Li Y.X., 2002 [PSS -> Microraptor]
• Cumnoria H.G. Seeley, 1888 [JSS -> Camptosaurus]
• Cylindricodon R. Owen vide Ingles and Sawyer, 1979 / G. Jaeger, 1828 -> Hylaeosaurus

D

• Daanosaurus Ye, Gao Y. and Jiang, 2005
• Dacentrurus F.A. Lucas, 1902
• Dachungosaurus Zhao X. (as Chao S.), 1985 [nomen nudum]
• Dakotadon Paul, 2008
• Dalianraptor Gao C. and Liu J., 2005 [possible bird]
• Damalasaurus Zhao X., 1983 [nomen nudum]
• Dandakosaurus Yadagiri, 1982 [nomen dubium]
• Danubiosaurus E. Bunzel, 1871 [nomen dubium; PSS -> Struthiosaurus]
• Daptosaurus Brown vide Chure and McIntosh, 1989 [nomen nudum –> Deinonychus]
• Dashanpusaurus Peng G., Ye, Gao Y., Shu and Jiang, 2005
• Daspletosaurus D.A. Russell, 1970 [PSS -> Albertosaurus]

Daspletosaurus

• Datousaurus Dong Z.M. and Tang Z., 1984
• Daxiatitan You, Li D., Zhou L., and Ji Q., 2008
• Deinocheirus Osmólska and Roniewicz, 1970
• Deinodon J. Leidy, 1856 [nomen dubium; PSS -> Albertosaurus]
• Deinonychus Ostrom, 1969

Deinonychus

• Deltadromeus Sereno, Duthiel, Iarochene, Larsson, Lyon, Magwene, Sidor, Varricchio and J.A. Wilson, 1996

Deltadromeus

• Denversaurus Bakker, 1988
• Diamantinasaurus Scott A. Hocknull, Mathew A. White, Travis R. Tischler, Alex G. Cook, Naomi D. Calleja, Trish Sloan, David A. Elliott, 2009
• Diceratops Lull vide Hatcher, 1905 / Foerster, 1868 -> Diceratus (unnecessary) * Nedoceratops
• Diceratus Mateus, 2008 [JOS -> Nedoceratops]
• Diclonius E.D. Cope, 1876 [nomen dubium]
• Dicraeosaurus Janensch, 1914

Dicraeosaurus

• Didanodon Osborn, 1902 [nomen dubium; PSS -> Lambeosaurus]
• Dilong Xu X., Norell, Kuang, Wang X., Zhao Q. and Jia C., 2004

Dilong

• Dilophosaurus Welles, 1970

Dilophosaurus

• Dimodosaurus Pidancet and Chopard, 1862 [nomen dubium; PSS -> Plateosaurus]
• Dinheirosaurus J.F. Bonaparte and Mateus, 1999
• Dinodocus R. Owen, 1884 [nomen dubium]
• Dinosaurus L. Rütimeyer, 1856 / Fischer von Waldheim, 1847 -> Gresslyosaurus
• Dinotyrannus Olshevsky vide Olshevsky, Ford and Yamamoto, 1995 [JSS -> Tyrannosaurus]
• Diplodocus O.C. Marsh, 1878

Diplodocus

• Diplotomodon J. Leidy, 1868 [nomen dubium; PSS -> Dryptosaurus]
• Diracodon O.C. Marsh, 1881 [nomen dubium; PSS -> Stegosaurus]
• Dolichosuchus F. von Huene, 1932 [nomen dubium]
• Dollodon Paul, 2008
• Domeykosaurus Rubilar-Rogers (as Rubilar) and Vargas vide [Anonymous], 2003 [nomen nudum; in May 29, 2003 Reuters news reports]
• Dongbeititan Wang X., You H., Meng Q., Gao C., Chang X., and Liu J., 2007
• Dongyangosaurus Lü, Azuma, Chen R., Zheng W. and Jin X., 2008
• Doryphorosaurus F. Nopcsa, 1916 [JOS -> Kentrosaurus]
• Draconyx Mateus and Telles Antunes, 2001
• Dracopelta Galton, 1980
• Dracorex Bakker, R. Sullivan, Porter, Larson and Saulsbury, 2006
• Dracovenator Yates, 2006 [for 2005]
• Dravidosaurus Yadagiri and Ayyasami, 1979
• Drinker Bakker, Galton, Siegwarth and Filla, 1990
• Dromaeosauroides P. Christiansen and Bonde, 2003
• Dromaeosaurus Matthew and Brown, 1922

Dromaeosaurus

• Dromiceiomimus D.A. Russell, 1972

Dromiceiomimus

• Dromicosaurus van Hoepen, 1920 [JSS -> Massospondylus]
• Dromomeron Irmis, Nesbitt, Padian, N.D. Smith, Turner, Woody and A. Downs, 2007
• Dryosaurus O.C. Marsh, 1894

Dryosaurus

• Dryptosauroides F. von Huene and Matley, 1933 [nomen dubium]
• Dryptosaurus O.C. Marsh, 1877
• Dubreuillosaurus Allain, 2005
• Duriavenator Benson, 2008
• Dynamosaurus Osborn, 1905 [JSS -> Tyrannosaurus]
• Dyoplosaurus Parks, 1924
• Dysalotosaurus Virchow, 1919 [JSS -> Dryosaurus]
• Dysganus E.D. Cope, 1876 [nomen dubium]
• Dyslocosaurus McIntosh, Coombs and D.A. Russell, 1992
• Dystrophaeus E.D. Cope, 1877
• Dystylosaurus Jensen, 1985 [JSS -> Supersaurus]

E

• Echinodon R. Owen, 1861
• Edmarka Bakker, Kralis, Siegwarth and Filla, 1992
• Edmontonia C.M. Sternberg, 1928

Edmontonia

• Edmontosaurus Lambe, 1917

Edmontosaurus

• Efraasia Galton, 1973
• Einiosaurus S.D. Sampson, 1995

Einiosaurus

• Ekrixinatosaurus Calvo, Rubilar-Rogers and Moreno, 2004
• Elaphrosaurus Janensch, 1920

Elaphrosaurus

• Elmisaurus Osmólska, 1981
• Elosaurus Peterson and Gilmore, 1902 [JSS -> Apatosaurus]
• Elrhazosaurus P.M. Galton, 2009
• Elvisaurus Holmes, 1993 [nomen nudum -> Cryolophosaurus]
• Emausaurus Haubold, 1990
• Embasaurus Riabinin, 1931 [nomen dubium]
• Enigmosaurus Barsbold and Perle vide Barsbold, 1983 [JSS -> Erlikosaurus]
• Eobrontosaurus Bakker, 1998
• Eocarcharia Sereno and Brusatte, 2008
• Eoceratops Lambe, 1915 [PSS -> Chasmosaurus]
• Eocursor Butler, R.M.H. Smith and D.B. Norman, 2007
• "Eohadrosaurus" Kirkland, 1997 [nomen nudum -> Eolambia]
• Eolambia Kirkland, 1998
• Eomamenchisaurus Lü, Li T.G., Zhong, Ji Q. and Li S.X., 2008
• Eoraptor Sereno, Forster, Rogers and Monetta, 1993

Eoraptor

• Eotriceratops Wu X., Brinkman, Eberth and Braman, 2007
• Eotyrannus Hutt, Naish, Martill, Barker and Newberry, 2001

Eotyrannus

• Epachthosaurus J. Powell, 1990
• Epanterias E.D. Cope, 1878 [nomen dubium; PSS -> Allosaurus or Saurophaganax]
• Epidendrosaurus Zhang F., Zhou Z., Xu X. and Wang X., 2002
• Equijubus You, Luo, Shubin, Witmer, Tang Z. and Tang F., 2003
• Epidexipteryx Zhang F., Zhou Z., Xu X., Wang X. L. and C. Sullivan, 2008
• Erectopus F. von Huene, 1922
• Erketu Ksepka and Norell, 2006
• Erliansaurus Xu X., Zhang X.H., Sereno, Zhao X., Kuang, Han J. and Tan L., 2002
• Erlikosaurus Perle vide Barsbold and Perle, 1980
• Eshanosaurus Xu X., Zhau X. and Clark, 2001
• Euacanthus R. Owen vide Tennyson, 1897 [nomen nudum; JOS -> Polacanthus]
• Eucamerotus J.W. Hulke, 1872 [nomen dubium]
• Eucentrosaurus Chure and McIntosh, 1989 [JOS -> Centrosaurus]
• Eucercosaurus H.G. Seeley, 1879 [nomen dubium; PSS -> Acanthopholis]
• Eucnemesaurus van Hoepen, 1920
• Eucoelophysis R. Sullivan and S.G. Lucas, 1999
• Eugongbusaurus Knoll, 1999
• Euhelopus Romer, 1956
• Euoplocephalus Lambe, 1910

Euplocephalus

• Eureodon Brown vide Olshevsky, 1991 [nomen nudum -> Tenontosaurus]
• Euronychodon Telles Antunes and Sigogneau-Russell, 1991
• Europasaurus Mateus, Laven and Knötschke vide Sander, Mateus, Laven and Knötschke, 2006
• Euskelosaurus T.H. Huxley, 1866
• Eustreptospondylus A.D. Walker, 1964

Eustreptospondylus

F

• Fabrosaurus Ginsburg, 1964 [nomen dubium]
• Falcarius Kirkland, Zanno, S.D. Sampson, Clark and DeBlieux, 2005
• Fenestrosaurus Osborn, 1924 [nomen nudum -> Oviraptor]
• Ferganasaurus Alifanov and Averianov, 2003
• Ferganocephale Averianov, T. Martin and Bakirov, 2005
• Frenguellisaurus F.E. Novas, 1986 [JSS -> Herrerasaurus]
• Fukuiraptor Azume and P.J. Currie, 2000

Fukuiraptor

• Fukuisaurus Kobayashi and Azuma, 2003
• Fukuititan Azuma & Shibata, 2010
• Fulengia Carroll and Galton, 1977 [JSS -> Lufengosaurus]
• Fulgurotherium F. von Huene, 1932
• Fusinasus Hutt, 2002 [nomen nudum -> Eotyrannus]
• Fusuisaurus Mo, Wang W., Huang Z., Huang X. and Xu X., 2006
• "Futabasaurus" Lambert, 1990 [nomen nudum; this name now belongs to a plesiosaur (Sato, Hasegawa and Manabe, 2006)]
• Futalognkosaurus Calvo, Porfiri, González-Riga and Kellner, 2007

G

• Gadolosaurus Saito, 1979 [nomen nudum]
• Gallimimus Osmólska, Roniewicz and Barsbold, 1972

Gallimimus

• Galveosaurus Sánchez-Hernández, 2005
• Galvesaurus Barco, Canudo, Cuenca-Bescós and Ruíz-Omeñaca, 2005 [JOS -> Galveosaurus]
• Gansutitan You, Li D., Zhou L., and Ji Q., 2008 [nomen nudum -> Daxiatitan]
• Gargoyleosaurus Carpenter, C.A. Miles and Cloward, 1998

Gargoyleosaurus

• Garudimimus Barsbold, 1981
• Gasosaurus Dong Z.M., 1985

Gasosaurus

• Gasparinisaura R.A. Coria and Salgado, 1996
• Gastonia Kirkland, 1998

Gastonia

• Gavinosaurus Kelly, 1998 [nomen nudum -> Eotyrannus]
• Genusaurus Accarie, Beaudoin, Dejax, Fries, Michard and Taquet, 1995
• Genyodectes Woodward, 1901
• Geranosaurus Broom, 1911
• Gigantoraptor Xu X., Tan Q., Wang J., Zhao X. and Tan L., 2007
• Giganotosaurus R.A. Coria and Salgado, 1995

Giganotosaurus

• Gigantosaurus H.G. Seeley, 1869 [nomen dubium; PSS -> Pelorosaurus]
• Gigantosaurus E. Fraas, 1908 / H.G. Seeley, 1869 -> Tornieria
• Gigantoscelus van Hoepen, 1916 [JSS -> Euskelosaurus]
• Gigantspinosaurus Ouyang H., 1992
• Gilmoreosaurus Brett-Surman, 1979
• Ginnareemimus Kaneko, 2000 [nomen nudum]
• Giraffatitan Paul, 1988
• Glacialisaurus N.D. Smith and Pol, 2007
• Glishades Prieto-Márquez, 2010
• Glyptodontopelta Ford, 2000
• Gobiceratops Alifanov, 2008
• Gobisaurus Vickaryous, A.P. Russell, P.J. Currie and Zhao X., 2001
• Gobititan You, Tang F. and Luo, 2003
• Godzillasaurus Ikejiri, 2003 [nomen nudum; JOS –> Gojirasaurus (misspelled)]
• Gojirasaurus Carpenter, 1997

Gojirasaurus

• Gondwanatitan Kellner and Azevedo, 1999
• Gongbusaurus Dong Z.M., Zhou S. and Zhang Y.H., 1983
• Gongxianosaurus He X., Wang C., Liu S., Zhou F., Liu T., Cai and Dai, 1998
• Gorgosaurus Lambe, 1914 [PSS -> Albertosaurus]
• Goyocephale Perle, Maryanska and Osmólska, 1982
• Graciliceratops Sereno, 2000
• Graciliraptor Xu X. and Wang X., 2004
• Gravisaurus Chabli vide D.B. Norman, 1989 [nomen nudum -> Lurdusaurus]
• Gravitholus Wall and Galton, 1979 [nomen dubium]
• Gresslyosaurus L. Rütimeyer, 1856 [PSS -> Plateosaurus]
• "Gripposaurus" P.M. Barrett, P. Upchurch, Zhou X. and Wang X., 2007 [nomen nudum]
• Gryponyx Broom, 1911 [JSS -> Massospondylus]
• Gryposaurus Lambe, 1914
• Guaibasaurus J.F. Bonaparte, Ferigolo and Ribeiro, 1999
• Guanlong Xu X., Clark, Forster, Norell, Erickson, Eberth, Jia C. and Zhao Q., 2006

Guanlong

• Gyposaurus Broom, 1911 [JSS -> Massospondylus]

H

• "Hadrosauravus" Lambert, 1990 [nomen nudum -> Gryposaurus]
• Hadrosaurus J. Leidy, 1859 [nomen dubium]
• Hagryphus Zanno and S.D. Sampson, 2005
• Halticosaurus F. von Huene, 1908 [nomen dubium]
• Hanssuesia R. Sullivan, 2003
• "Hanwulosaurus" [Anonymous] 2001 [nomen nudum; in Xinhua News Service news articles]
• Haplocanthosaurus Hatcher, 1903
• Haplocanthus Hatcher, 1903 / L. Agassiz, 1845 -> Haplocanthosurus
• Harpymimus Barsbold and Perle, 1984
• Hecatasaurus Brown, 1910 [JOS -> Telmatosaurus]
• Heilongjiangosaurus Li W. and Jin J., 2001 [nomen nudum]
• Heishansaurus Bohlin, 1953 [nomen dubium]
• Helioceratops, Jin Liyong et al, 2009
• Helopus Wiman, 1929 / J.G. Wagler, 1832 -> Euhelopus
• Heptasteornis Harrison and C.A. Walker, 1975 [nomen dubium; PSS -> Elopteryx]
• Herrerasaurus Reig, 1963

Herrerasaurus

• Hesperonychus N.R. Longrich and P.J. Currie, 2009
• Hesperosaurus Carpenter, C.A. Miles and Cloward, 2001

Hesperosaurus

• Heterodontosaurus Crompton and Charig, 1962

Heterodontosaurus

• Heterosaurus Cornuel, 1850 [JSS -> Iguanodon]
• Hexinlusaurus P.M. Barrett, Butler and Knoll, 2005
• Heyuannia Lü, 2003
• Hierosaurus Wieland, 1909
• Hikanodon W.M. Keferstein, 1834 [JOS -> Iguanodon]
• "Hironosaurus" Hisa, 1988 [nomen nudum]
• "Hisanohamasaurus" Lambert, 1990 [nomen nudum]
• Histriasaurus Dalla Vecchia, 1998
• Homalocephale Maryanska and Osmólska, 1974

Homalocephale

• Honghesaurus [Anonymous], 1981 [nomen nudum -> Yandusaurus]
• Hongshanosaurus You, Xu X. and Wang X., 2003
• Hoplitosaurus F.A. Lucas, 1902
• Hoplosaurus H.G. Seeley, 1881 [nomen dubium; PSS -> Struthiosaurus]
• Hortalotarsus H.G. Seeley, 1894 [JSS -> Massospondylus]
• Huabeisaurus Pang and Cheng Z., 2000
• Huanghetitan You, Li D., Zhou L. and Ji Q., 2006
• Huaxiagnathus Hwang, Norell, Ji Q. and Gao K., 2004
• "Huaxiasaurus" Rey, 2002 [nomen nudum -> Huaxiagnathus]
• Huayangosaurus Dong Z.M., Tang Z. and Zhou S., 1982

Huayangosaurus

• Hudiesaurus Dong Z.M., 1997
• Hulsanpes Osmólska, 1982
• Hungarosaurus Ösi, 2005
• Hylaeosaurus G. Mantell, 1833
• Hylosaurus L.J. Fitzinger, 1840 [JOS -> Hylaeosaurus]
• Hypacrosaurus Brown, 1913

Hypacrosaurus

• Hypselosaurus Matheron, 1869
• Hypselospinus Norman, 2010
• Hypsibema E.D. Cope, 1869 [nomen dubium]
• Hypsilophodon T.H. Huxley, 1869

Hypsilophodon

• Hypsirophus E.D. Cope, 1878 [nomen dubium; >Stegosaurus]

I

• "Ichabodcraniosaurus" Novacek, 1996 [nomen nudum]
• Iguanodon G. Mantell, 1825

Iguanodon

• "Iguanoides" Conybeare vide Cadbury, 2000 [nomen nudum –> Iguanodon]
• Iguanosaurus [Anonymous], 1824 [nomen nudum -> Iguanodon]
• Iliosuchus F. von Huene, 1932
• Ilokelesia R.A. Coria and Salgado,2000 (not 1998)
• Incisivosaurus Xu X., Cheng Y., Wang X. and Chang C., 2002 [PSS -> Protarchaeopteryx]
• Indosaurus F. von Huene and Matley, 1933
• Indosuchus F. von Huene and Matley, 1933

Indosuchus

• Ingenia Barsbold, 1981 / Gerlach, 1957 (replacement name not yet published)

Huayangosaurus

• Inosaurus de Lapparent, 1960 [nomen dubium]
• Irritator Martill, Cruickshank, Frey, Small and M. Clarke, 1996

Irritator

• Isanosaurus Buffetaut, Suteethorn, Cuny, Tong, LeLoeuff, Khansubha and Jongautchariyakul, 2000
• Ischisaurus Reig, 1963 [JSS -> Herrerasaurus]
• Ischyrosaurus J.W. Hulke, 1874 vide R. Lydekker, 1888 / E.D. Cope, 1869
• Isisaurus J.A. Wilson and P. Upchurch, 2003
• "Issasaurus" G. Maier, 2003 [nomen nudum -> Dicraeosaurus]
• Itemirus Kurzanov, 1976
• Iuticosaurus LeLoeuff, 1993 [nomen dubium]

J

• Jainosaurus Hunt, Lockley, S.G. Lucas and C. Meyer, 1995 (not 1994) [nomen dubium; PSS -> Titanosaurus]
• Janenschia Wild, 1991
• Jaxartosaurus Riabinin, 1937 [nomen dubium]
• Jeholornis Zhou Z. and Zhang F., 2002 [JSS -> Shenzhouraptor; possible bird]
• Jeholosaurus Xu X., Wang X. and You, 2000
• Jenghizkhan Olshevsky vide Olshevsky, Ford and Yamamoto, 1995 [JSS -> Tarbosaurus]
• Jensenosaurus Olshevsky vide B.D. Curtice, Stadtman and L.J. Curtice, 1996 [nomen nudum -> Ultrasauros; JSS -> Supersaurus]
Jeyawati McDonald, Wolfe & Kirkland, 2010
• "Jiangjunmiaosaurus" [Anonymous], 1987 [nomen nudum -> Monolophosaurus and Sinraptor]
• Jiangjunosaurus Jia C., Forster (as Foster), Xu X. and Clark, 2007
• Jiangshanosaurus Tang F., Kang, Jin X., Wei and Wu W.T., 2001
• Jinfengopteryx Ji Q., Ji S., Lü, You, Chen W., Liu Y.Q. and Liu Y.X., 2005
• Jingshanosaurus Zhang Y.H. and Yang Z.L., 1995
• Jinzhousaurus Wang X. and Xu X., 2001
• Jiutaisaurus Wu W.H., Dong Z.M., Sun, Li C. and Li T., 2006
• Jixiangornis Ji Q., Ji S., Zhang H., You, Zhang J.P., Wang L., Yuan and Ji X., 2002 [possible bird]
• Jobaria Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, G.P. Wilson and J.A. Wilson, 1999

Jobaria

• Jubbulpuria F. von Huene and Matley, 1933 [nomen dubium]
• "Jurassosaurus" Dong Z.M. vide Holden, 1992 [nomen nudum -> Tianchisaurus]
• Juravenator Göhlich and Chiappe, 2006

K

• "Kagasaurus" Hisa, 1988 [nomen nudum]
• Kaijiangosaurus He X., 1984
• Kakuru Molnar and Pledge, 1980
• Kangnasaurus Haughton, 1915
• Karongasaurus Gomani, 2005 [electronically published]
• "Katsuyamasaurus" Lambert, 1990 [nomen nudum -> Fukuiraptor]
• Kelmayisaurus Dong Z.M., 1973
• Kemkemia Cau, Andrea; Maganuco, Simone, 2009
• Kentrosaurus Hennig, 1915 / Lambe, 1904 -> Kentrurosaurus and Doryphorosaurus

Kentrosaurus

• Kentrurosaurus Hennig, 1916 [JOS -> Kentrosaurus]
• Kerberosaurus Bolotsky and Godefroit, 2004
• Khaan Clark, Norell and Barsbold, 2001
• Khetranisaurus Malkani, 2006
• Kinnareemimus Buffetaut, E., V. Suteethorn and H. Tong, 2009
• "Kitadanisaurus" Lambert, 1990 [nomen nudum]
• Kittysaurus Hargreaves, 2001 [nomen nudum -> Eotyrannus]
• Klamelisaurus Zhao X., 1993
• Kol ghuva Alan H. Turner, Sterling J. Nesbitt, and Mark A. Norell, 2009
• Koparion Chure, 1994
• Koreanosaurus Kim H.M., 1979 [nomen nudum]
• Kotasaurus Yadagiri, 1988
• Koutalisaurus Prieto-Marquez, Gaete, Rivas, Galobart and Boada, 2006
• Kritosaurus Brown, 1910 [nomen dubium; PSS -> Anasazisaurus, Gryposaurus, and/or Naashoibitosaurus]
• Kryptops Sereno and Brusatte, 2008
• Kulceratops Nessov, 1995
• Kunmingosaurus Zhao X. (as Chao S.), 1985

L

• Labocania Molnar, 1974
• Labrosaurus O.C. Marsh, 1879 [JSS -> Allosaurus]
• Laelaps E.D. Cope, 1866 / Koch, 1836 -> Drytosaurus
• Laevisuchus F. von Huene and Matley, 1933 [nomen dubium]
• Lagerpeton Romer, 1971
• Lagosuchus Romer, 1971 [nomen dubium]
• Lamaceratops Alifanov, 2003
• Lambeosaurus Parks, 1923

Lambeosaurus

• Lametasaurus Matley, 1923 [nomen dubium]
• Lamplughsaura Kutty, Chatterjee, Galton and P. Upchurch, 2007
• Lanasaurus Gow, 1975
• Lancangosaurus Zhao X. vide Dong Z.M., Zhou S. and Zhang Y.H., 1983 [nomen nudum -> Datousaurus]
• Lancanjiangosaurus Zhao X., 1983 [nomen nudum]
• Lanzhousaurus You, Ji Q and Li D, 2005
• Laosaurus O.C. Marsh, 1878 [nomen dubium]
• Laplatasaurus F. von Huene, 1929
• Lapparentosaurus J.F. Bonaparte, 1986
• Leaellynasaura T. Rich and Vickers-Rich (as P. Rich), 1989

Leaellynasaura

• Leipsanosaurus F. Nopcsa, 1918 [PSS -> Struthiosaurus]
• Lengosaurus Kelly, 1998 [nomen nudum -> Eotyrannus]
• Leptoceratops Brown, 1914
• Leptospondylus R. Owen, 1854 [JSS -> Massospondylus]
• Leshansaurus Li F., Peng G., Ye Y., Jiang S. and Huang D., 2009
• Lesothosaurus Galton, 1978 [PSS -> Fabrosaurus]

Lesothosaurus

• Lessemsaurus J.F. Bonaparte, 1999
• Levnesovia, Hans-Dieter Sues and Alexander Averianov, 2009
• Lexovisaurus Hoffstetter, 1957
• Liaoceratops Xu X., Makovicky, Wang X., Norell and You, 2002
• Liaoningosaurus Xu X., Wang X. and You, 2001
• Liassaurus Welles, H.P. Powell and Pickering vide Pickering, 1995 [nomen nudum]
• Ligabueino J.F. Bonaparte, 1996
• Ligabuesaurus J.F. Bonaparte, González-Riga (as González Riga) and Apesteguía, 2006
• "Ligomasaurus" G. Maier, 2003 [nomen nudum -> Giraffatitan or Brachiosaurus]
• Liliensternus Welles, 1984

Liliensternus

• Limaysaurus Salgado, Garrido, S.E. Cocca and J.R. Cocca, 2004
• Limnosaurus F. Nopcsa, 1899 / O.C. Marsh, 1872 -> Telmatosaurus and Hecatasaurus
• Limusaurus Xu, X., et al, 2009
• Lirainosaurus Sanz, J.E. Powell, Le Loeuff, R.D. Martínez and Pereda-Suberbiola, 1999
• Loncosaurus F. Ameghino, 1898 [nomen dubium]
• Longosaurus Welles, 1984 [JSS -> Coelophysis]
• Lophorhothon W.R. Langston, 1960
• Lophostropheus Ezcurra and Cuny, 2007
• Loricatosaurus S. Maidment, D.B. Norman, P.M. Barrett and P. Upchurch, 2008
• Loricosaurus F. von Huene, 1929
• Losillasaurus Casanovas-Cladellas (as Casanovas), Santafe and Sanz, 2001
• Lourinhanosaurus Mateus, 1998
• Lourinhasaurus Dantas, Sanz, Da Silva, Ortega, Dos Santos and Cachao, 1998
• Luanchuanraptor Lü, Xu L., Zhang X.L., Ji Q., Jia S., Hu W., Zhang J.M. and Wu Y., 2007
• Luanpingosaurus Cheng vide Chen P., 1996 [nomen nudum -> Psittacosaurus]
• Luckyraptor [Anonymous], 2007 [nomen nudum]
• Lufengocephalus Yang Z.J. (as Young C.C.), 1974 [JSS -> Lufengosaurus]
• Lufengosaurus Yang Z.J. (as Young C.C.), 1941
• Lukousaurus Yang Z.J. (as Young C.C.), 1948
• Luoyanggia Lü, Xu L., Jiang X., Jia S., Li M., Yuan, Zhang X.L. and Ji Q., 2009
• Luoyangosaurus Lü, 2009 [nomen nudum -> Luoyanggia]
• Lurdusaurus Taquet and D.A. Russell, 1999
• Lusitanosaurus de Lapparent and Zbyszewski, 1957
• Lusotitan Telles Antunes and Mateus, 2003
• Lycorhinus Haughton, 1924

M

• Macrodontophion A. Zborzewski, 1834 [nomen dubium]
• Macrogryphosaurus Calvo, Porfiri and F.E. Novas, 2007
• Macrophalangia C.M. Sternberg, 1932 [JSS -> Chirostenotes]
• Macrurosaurus H.G. Seeley, 1876
• "Madsenius" Lambert, 1990 [nomen nudum -> Allosaurus]
• Magnirostris You and Dong Z.M., 2003
• Magnosaurus F. von Huene, 1932
• Magulodon Kranz, 1996 [nomen nudum]
• Magyarosaurus F. von Huene, 1932
• Mahakala Turner, Pol, J.A. Clarke, Erickson and Norell, 2007
• Maiasaura Horner and Makela, 1979

Maiasaura

• Majungasaurus Lavocat, 1955

Majungasaurus

• Majungatholus Sues and Taquet, 1979 [JSS -> Majungasaurus]
• Malarguesaurus González-Riga, Previtera and Pirrone, 2008
• Malawisaurus Jacobs, Winkler, W.R. Downs and Gomani, 1993
• Maleevosaurus Carpenter, 1992 [JSS -> Tarbosaurus]
• Maleevus Tumanova, 1987
• Mamenchisaurus Yang Z.J. (as Young C.C.), 1954

Mamenchisaurus

• Mandschurosaurus Riabinin, 1930 [nomen dubium; PSS ->Amurosaurus or Charonosaurus]
• Manospondylus E.D. Cope, 1892 [nomen dubium; PSS -> Tyrannosaurus]
• Mantellisaurus Paul, 2006
• Mapusaurus R.A. Coria and P.J. Currie, 2006

Mapusaurus

• Marasuchus Sereno and Arcucci, 1994
• Marisaurus Malkani, 2006
• Marmarospondylus R. Owen, 1875 [nomen dubium]
• Marshosaurus J.H. Madsen, 1976
• Masiakasaurus S.D. Sampson, Carrano and Forster, 2001

Masiakasaurus

• Massospondylus R. Owen, 1854
• Maxakalisaurus Kellner, Campos, Azevedo, Trotta, Henriques, Craik and Silva, 2006
• Medusaceratops Ryan, A. P. Russell and Hartman, 2010
• Megacervixosaurus Zhao X., 1983 [nomen nudum]
• Megadactylus E. Hitchcock, 1865 / L.J. Fitzinger, 1843 -> Amphisaurus
• "Megadontosaurus" Brown vide Ostrom, 1970 [nomen nudum -> Deinonychus and Microvenator]
• Megalosaurus W. Buckland, 1824

Megalosaurus

• Megapnosaurus Ivie, Slipinski and Wegrzynowicz, 2001 [JSS -> Coelophysis]
• Megaraptor F.E. Novas, 1998
• Mei Xu X., and Norell, 2004
• Melanorosaurus Haughton, 1924
• Mendozasaurus González-Riga (as González Riga), 2003
• Merosaurus Welles, H.P. Powell and Pickering vide Pickering, 1995 [nomen nudum]
• Metriacanthosaurus A.D. Walker, 1964

Metriacanthosaurus

• Microcephale Sereno, 1997 [nomen nudum]
• Microceratops Bohlin, 1953 / Seyrig, 1952 -> Microceratus
• Microceratus Mateus, 2008 [nomen dubium]
• Microcoelus R. Lydekker, 1893 [nomen dubium; PSS -> Saltasaurus]
• Microdontosaurus Zhao X., 1983 [nomen nudum]
• Microhadrosaurus Dong Z.M., 1979 [nomen dubium]
• Micropachycephalosaurus Dong Z.M., 1978
• Microraptor Xu X., Zhou Z. and Wang X., 2000

Microraptor

• Microsaurops Kuhn, 1963 [JOS -> Microcoelus]
• Microvenator Ostrom, 1970
• "Mifunesaurus" Hisa, 1985 [nomen nudum]
• Minmi Molnar, 1980

Minmi

• Minotaurasaurus C.A. Miles and C.J. Miles, 2009
• Miragaia Mateus, S. Maidment and N.A. Christiansen, 2009
• Mirischia Naish, Martill and Frey, 2004
• Moabosaurus Britt vide [Anonymous] 2006 [nomen nudum, in "The Gigantic Dinosaur Expo 2006 Official Guidebook"]
• Mochlodon H.G. Seeley, 1881
• "Mohammadisaurus" G. Maier, 2003 [nomen nudum -> Tornieria]
• Mongolosaurus Gilmore, 1933 [nomen dubium]
• Monkonosaurus Zhao X. vide Dong Z.M., 1990
• Monoclonius E.D. Cope, 1876 [nomen dubium; PSS -> Centrosaurus or Styracosaurus]
• Monolophosaurus Zhao X. and P.J. Currie, 1994 (not 1993)

Monolophosaurus

• Mononychus Perle, Norell, Chiappe and Clark, 1993 / Schueppel, 1824 -> Mononykus
• Mononykus Perle, Norell, Chiappe and Clark, 1993

Mononykus

• Montanoceratops C.M. Sternberg, 1951
• Morinosaurus H.E. Sauvage, 1874 [nomen dubium; PSS -> Pelorosaurus]
• Morosaurus O.C. Marsh, 1878 [JSS -> Camarasaurus]
• "Moshisaurus" Hisa, 1985 [nomen nudum -> Mamenchisaurus]
• "Mtapaiasaurus" G. Maier, 2003 [nomen nudum -> Giraffatitan or Brachiosaurus]
• "Mtotosaurus" G. Maier, 2003 [nomen nudum -> Dicraeosaurus]
• Mussaurus J.F. Bonaparte and Vince, 1979
• Muttaburrasaurus Bartholomai and Molnar, 1981

Muttaburrasaurus
Muttaburasaurus

• Muyelensaurus Calvo, González-Riga and Porfiri, 2007
• Mymoorapelta Kirkland and Carpenter, 1994

N

• Naashoibitosaurus Hunt and S.G. Lucas, 1993 [PSS -> Gryposaurus or Kritosaurus]
• Nanningosaurus Mo, Zhao Z., Wang W. and Xu X., 2007
• Nanosaurus O.C. Marsh, 1877
• Nanotyrannus Bakker, Williams and P.J. Currie, 1988 [PSS -> Tyrannosaurus]

Nanotyrannus

• Nanshiungosaurus Dong Z.M., 1979
• Nanyangosaurus Xu X., Zhao X., Lü, Huang W., Li Z. and Dong Z.M., 2000
• Nectosaurus Versluys, 1910 / Merriam, 1905 -> Kritosaurus
• Nedcolbertia Kirkland, Britt, Whittle, S.K. Madsen and Burge, 1998
• Nedoceratops Ukrainsky, 2007 [PSS -> Triceratops]
• Neimongosaurus Zhang X.H., Xu X., Zhao X., Sereno, Kuang and Tan L., 2001
• Nemegtia Lü, Tomida, Azuma, Dong Z.M. and Lee, 2004 / Szczechura, 1978 -> Nemegtomaia
• Nemegtomaia Lü, Tomida, Azuma, Dong Z.M. and Lee, 2005
• Nemegtosaurus Nowinski, 1971
• Neosaurus Gilmore vide Gilmore and Stewart, 1945 / F. Nopcsa, 1923 -> Parrosaurus
• Neosodon M. de la Moussaye, 1885
• Neovenator Hutt, Martill and Barker, 1996

Neovenator

• Neuquenraptor F.E. Novas and D. Pol, 2005 [PSS -> Unenlagia]
• Neuquensaurus J.E. Powell, 1992
• Newtonsaurus Welles vide Welles and Pickering, 1999 [nomen nudum]
• Ngexisaurus Zhao X., 1983 [nomen nudum]
• Nigersaurus Sereno, Beck, Dutheil, Larsson, Lyon, Moussa, Sadleir, Sidor, Varricchio, G.P. Wilson and J.A. Wilson, 1999

Nigersaurus

• Niobrarasaurus Carpenter, Dilkes and Weishampel, 1995
• Nipponosaurus Nagao, 1936
• Noasaurus J.F. Bonaparte and J.E. Powell, 1980
• Nodocephalosaurus R. Sullivan, 1999
• Nodosaurus O.C. Marsh, 1889
• Nomingia Barsbold, Osmólska, Watabe, P.J. Currie and Tsogtbaatar, 2000
• Nopcsaspondylus Apesteguía, 2007
• Nothronychus Kirkland and Wolfe, 2001
• Notoceratops Tapia, 1918 [nomen dubium]
• Notohypsilophodon R.D. Martínez, 1998
• Nqwebasaurus de Klerk, Foster, S.D. Sampson, Chinsamy and Ross, 2000
• "Nteregosaurus" G. Maier, 2003 [nomen nudum -> Janenschia]
• Nuoersaurus Dong Z.M. and Li X.M., 1991 [nomen nudum; later spelled Nuoerosaurus and Nurosaurus but neither formally described nor named]
• Nuthetes R. Owen, 1854
• "Nyororosaurus" G. Maier, 2003 [nomen nudum -> Dicraeosaurus]

O

• Ohmdenosaurus Wild, 1978
• Ojoceratops R. Sullivan and S. G. Lucas, 2010
• Oligosaurus H.G. Seeley, 1881 [nomen dubium; PSS -> Rhabdodon]
• Olorotitan Godefroit, Bolotsky and Alifanov, 2003
• Omeisaurus Yang Z.J. (as Young C.C.), 1939
• Omnivoropteryx Czerkas and Ji Q., 2002
• Omosaurus R. Owen, 1875 / J. Leidy, 1856 -> Dacentrurus
• Onychosaurus F. Nopcsa, 1902 [nomen dubium; PSS -> Rhabdodon]
• Opisthocoelicaudia Borsuk-Bialynicka, 1977
• Oplosaurus P. Gervais, 1852 [nomen dubium; PSS -> Pelorosaurus]
• Orcomimus Triebold, 1997 [nomen nudum]
• Orinosaurus R. Lydekker, 1889 [JOS -> Orosaurus]
• Orkoraptor F.E. Novas, Ezcurra and Lecuona, 2008
• Ornatotholus Galton and Sues, 1983 [JSS -> Stegoceras]
• Ornithodesmus H.G. Seeley, 1887
• Ornithoides Osborn, 1924 [nomen nudum -> Saurornithoides]
• Ornitholestes Osborn, 1903

Ornitholestes

• Ornithomerus H.G. Seeley, 1881 [JSS -> Rhabdodon]
• Ornithomimoides F. von Huene and Matley, 1933 [nomen dubium]
• Ornithomimus O.C. Marsh, 1890
• Ornithopsis H.G. Seeley, 1870 [nomen dubium]
• Ornithotarsus E.D. Cope, 1869 [nomen dubium; PSS -> Hadrosaurus]
• Orodromeus Horner and Weishampel, 1988
• Orosaurus T.H. Huxley, 1867 [JSS -> Euskelosaurus]
• Orthogoniosaurus Das-Gupta, 1931 [nomen dubium]
• Orthomerus H.G. Seeley, 1883 [nomen dubium; PSS -> Telmatosaurus]
• Oryctodromeus Varricchio, A.J. Martin and Katsura, 2007
• Oshanosaurus Zhao X. (as Chao S.), 1985 [nomen nudum]
• Othnielosaurus Galton, 2006

Othnielosaurus

• Otogosaurus Zhao X. and Tan L., 2004 [citation not seen, author's name(s) may change]
• Ouranosaurus Taquet, 1976

Ouranosaurus

• Oviraptor Osborn, 1924

Oviraptor

• Ovoraptor Osborn, 1924 [nomen nudum -> Velociraptor]
• Ozraptor J.A. Long and Molnar, 1998

P

• Pachycephalosaurus Brown and Schlaikjer, 1943

Pachycephalosaurus

• Pachyrhinosaurus C.M. Sternberg, 1950

Pachyrhinosaurus

• Pachysauriscus Kuhn, 1959 [nomen dubium; PSS -> Plateosaurus]
• Pachysaurops F. von Huene, 1961 (not 1959) [JOS -> Pachysauriscus]
• Pachysaurus F. von Huene, 1908 / L.J. Fitzinger, 1843 -> Pachysauriscus
• Pachyspondylus R. Owen, 1854 [JSS -> Massospondylus]
• Pakisaurus Malkani, 2006
• Palaeopteryx Jensen, 1981
• Palaeoscincus J. Leidy, 1856 [nomen dubium; PSS -> Edmontonia or Panoplosaurus]
• Paluxysaurus Rose, 2007 [electronically published]
• Panoplosaurus Lambe, 1919
• Panphagia R.N. Martínez and Alcober, 2009
• Pantydraco Galton, Yates and Kermack, 2007
• Paraiguanodon Brown vide Olshevsky, 1991 [nomen nudum -> Bactrosaurus]
• Paralititan J.B. Smith, Lamanna, Locovara, Dodson, J.R. Smith, Poole, Giegengack and Attia, 2001
• Paranthodon F. Nopcsa, 1929
• Pararhabdodon Casanovas-Cladellas, Santafé-Llopis and Isidro-Llorens, 1993
• Parasaurolophus Parks, 1922

Parasaurolophus

• Parksosaurus C.M. Sternberg, 1937
• Paronychodon E.D. Cope, 1876 [nomen dubium]
• Parrosaurus Gilmore, 1945 [nomen dubium; PSS -> Hypsibema]
• Parvicursor Karhu and Rautian, 1996
• Patagonykus F.E. Novas, 1996
• Patagosaurus J.F. Bonaparte, 1979

Patagosaurus

• Pawpawsaurus Lee, 1996
• Pectinodon Carpenter, 1982
• Pedopenna Xu X. and Zhang F., 2005
• Peishansaurus Bohlin, 1953 [nomen dubium]
• Pelecanimimus Perez-Moreno, Sanz, Buscalioni, Moratalla, Ortega and Rasskin-Gutman, 1994

Pelecanimimus

• Pellegrinisaurus Salgado, 1996
• Peloroplites Carpenter, Bartlett, Bird and Barrick, 2008
• Pelorosaurus G. Mantell, 1850

Pelorosaurus

• Peltosaurus Brown vide Chure and McIntosh, 1989 (see also Glut, 1972) / E.D. Cope, 1873 -> Sauropelta
• Penelopognathus Godefroit, Li H. and Shang, 2005
• Pentaceratops Osborn, 1923

Pentaceratops

• Phaedrolosaurus Dong Z.M., 1973
• Phuwiangosaurus V. Martin, Buffetaut and Suteethorn, 1994
• Phyllodon Thulborn, 1973
• Piatnitzkysaurus J.F. Bonaparte, 1979

Piatnitzkysaurus

• Pinacosaurus Gilmore, 1933
• Pisanosaurus Casamiquela, 1967
• Pitekunsaurus Filippi and Garrido, 2008
• Piveteausaurus Taquet and Welles, 1977
• Planicoxa DiCroce and Carpenter, 2001
• Plateosauravus F. von Huene, 1932 [JSS -> Euskelosaurus]
• Plateosaurus von Meyer, 1837

Plateosaurus

• Platyceratops Alifanov, 2003
• Pleurocoelus O.C. Marsh, 1888
• Pleuropeltus H.G. Seeley, 1881 [nomen dubium; PSS -> Struthiosaurus]
• Pneumatoraptor Ösi, Apesteguía and Kowalewski, 2010
• Podokesaurus Talbot, 1911 [JSS -> Coelophysis]
• Poekilopleuron Eudes-Deslongchamps, 1838
• Polacanthoides F. Nopcsa, 1928 [PSS -> Hylaeosaurus]
• Polacanthus R. Owen vide [Anonymous], 1865
• Polyodontosaurus Gilmore, 1932 [JSS -> Troodon]
• Polyonax E.D. Cope, 1874 [JSS -> Triceratops]
• Ponerosteus Olshevsky, 2000 [nomen dubium]
• Pradhania Kutty, Chatterjee, Galton and P. Upchurch, 2007
• Prenocephale Maryanska and Osmólska, 1974

Prenocephale

• Prenoceratops Chinnery, 2004
• Priconodon O.C. Marsh, 1888 [nomen dubium]
• Priodontognathus H.G. Seeley, 1875 [nomen dubium]
• Probactrosaurus Rozhdestvensky, 1966
• Proceratops Lull, 1906 [JOS -> Ceratops]
• Proceratosaurus F. von Huene, 1926

Proceratosaurus

• Procerosaurus Fritsch, 1905 / F. von Huene, 1902 -> Ponerosteus
• Procheneosaurus Matthew, 1920 [JSS -> Lambeosaurus]
• Procompsognathus E. Fraas, 1913

Protoceratops

• Prodeinodon Osborn, 1924 [nomen dubium]
• Proiguanodon van den Broeck, 1900 [nomen nudum -> Iguanodon]
• Prosaurolophus Brown, 1916
• Protarchaeopteryx Ji Q. and Ji S., 1997
• Protiguanodon Osborn, 1923 [JSS -> Psittacosaurus]
• Protoavis Chatterjee, 1991
• Protoceratops Granger and Gregory, 1923

Protoceratops

• Protognathosaurus Olshevsky, 1991
• Protognathus Zhang Y.H., 1988 / Basilewsky, 1950 -> Protognathosaurus
• Protohadros Head, 1998
• Protorosaurus Lambe, 1914 / H. von Meyer, 1830 -> Chasmosaurus
• Protrachodon F. Nopcsa, 1923 [nomen nudum -> Orthomerus]
• Proyandusaurus Knoll, 1999
• Pseudolagosuchus Arcucci, 1987
• Psittacosaurus Osborn, 1923

Psittacosaurus

• Pteropelyx E.D. Cope, 1889 [nomen dubium]
• Pterospondylus Jaekel, 1913 [PSS -> Procompsognathus]
• Puertasaurus F.E. Novas, Salgado, Calvo and Agnolin, 2005
• Pukyongosaurus Dong Z.M., Paik and Kim H.J., 2001
• Pycnonemosaurus Kellner and Campos, 2002
• Pyroraptor Allain and Taquet, 2000

Q

• Qantassaurus T. Rich and Vickers-Rich, 1999
• Qiaowanlong You H.-L. and Li D.-Q., 2009
• Qingxiusaurus Mo, Huang C., Zhao Z., Wang W. and Xu X., 2008
• Qinlingosaurus Xue, Zhang Y.X., Bi, Yue and Chen D., 1996
• Quaesitosaurus Bannikov and Kurzanov vide Kurzanov and Bannikov, 1983
• Quilmesaurus R.A. Coria, 2001

R

• Rahona Forster, S.D. Sampson, Chiappe and Krause, 1998 / Griveaud, 1975 -> Rahonavis
• Rahonavis Forster, S.D. Sampson, Chiappe and Krause, 1998
• Rajasaurus J.A. Wilson, Sereno, Srivastava, Bhatt, Khosla and Sahni, 2003

Rajasaurus

• Rapator F. von Huene, 1932 [nomen dubium]
• Rapetosaurus Rogers and Forster, 2001
• Raptorex P.C. Sereno, Tan L., S.L. Brusatte, H.J. Kriegstein, Zhao X. and K. Cloward, 2009
• Rayososaurus J.F. Bonaparte, 1996
• Razanandrongobe Maganuco, Dal Sasso and Pasini, 2006 (possible crocodylomorph or theropod)
• Rebbachisaurus Lavocat, 1954
• Regnosaurus G. Mantell, 1848
• Revueltoraptor Hunt, 1994 vide Nesbitt, Irmis and Parker, 2007 [nomen ex dissertatione -> Gojirasaurus]
• Rhabdodon Matheron, 1869
• Rhadinosaurus H.G. Seeley, 1881 [nomen dubium]
• Rhodanosaurus F. Nopcsa, 1929 [JSS -> Struthiosaurus]
• Rhoetosaurus Longman, 1926

Rhoetosaurus

• Ricardoestesia P.J. Currie, Rigby and R.E. Sloan, 1990
• Rileya F. von Huene, 1902 / W.H. Ashmead, 1888 -> Rileyasuchus [nomen dubium]
• Rileyasuchus Kuhn, 1961 [nomen dubium]
• Rinchenia Barsbold, 1997 vide Osmólska, P.J. Currie and Barsbold, 2004
• Rinconsaurus Calvo and González-Riga (as González Riga), 2003
• Rioarribasaurus Hunt and S.G. Lucas, 1991 [nomen rejectum -> Coelophysis]
• Riojasaurus J.F. Bonaparte, 1969
• Rocasaurus Salgado and Azpilicueta, 2000
• Roccosaurus van Heerden vide Anderson and Cruickshank, 1978 [nomen nudum -> Melanorosaurus]
• Rubeosaurus McDonald and Horner, 2010
• Ruehleia Galton, 2001
• Rugops Sereno, J.A. Wilson and Conrad, 2004

Rugops

• Rutellum E. Lhuyd, 1699 [nomen oblitum; pre-Linnaean name cf. Delair and Sarjeant, 2002]
• Ruyangosaurus Lu J, Xu L, Jia S, Zhang X, Zhang J, Yang L, You H and Ji Q, 2009

S

• Sacisaurus Ferigolo and Langer, 2006
• Sahaliyania Godefroit, Hai, Yu and Lauters, 2008
• Saichania Maryanska, 1977

Saichania

• "Salimosaurus" G. Maier, 2003 [nomen nudum -> Giraffatitan or Brachiosaurus]
• Saltasaurus J.F. Bonaparte and J.E. Powell, 1980

Saltasaurus

• Saltopus F. von Huene, 1910
• "Saltriosaurus" Dal Sasso, 2000 [nomen nudum]
• "Sanchusaurus" Hisa, 1985 [nomen nudum -> Gallimimus]
• Sangonghesaurus Zhao X., 1983 [nomen nudum -> Tianchisaurus]
• Sanpasaurus Yang Z.J. (as Young C.C.), 1944 [nomen dubium]
• Santanaraptor Kellner, 1999
• Sarcolestes R. Lydekker, 1893
• Sarcosaurus Andrews, 1921
• Saturnalia Langer, Abdala, Richter and Benton, 1998
• Sauraechmodon H. Falconer, 1861 [nomen nudum -> Echinodon]
• Saurolophus Brown, 1912

Saurolophus

• Sauropelta Ostrom, 1970

Sauropelta

• Saurophaganax Chure, 1995

Saurophaganax

• Saurophagus J.W. Stovall vide Ray, 1941 / W.J. Swainson 1831
• Sauroplites Bohlin, 1953 [nomen dubium]
• Sauroposeidon Wedel, Cifelli and Sanders, 2000
• Saurornithoides Osborn, 1924

Saurornithoides

• Saurornitholestes Sues, 1978
• Scansoriopteryx Czerkas and Yuan, 2002
• Scelidosaurus R. Owen, 1859

Scelidosaurus

• Scipionyx Dal Sasso and Signore, 1998
• Scolosaurus F. Nopcsa, 1928
• Scrotum Brookes, 1763 [nomen oblitum; PSS -> Megalosaurus]
• Scutellosaurus Colbert, 1981
• Secernosaurus Brett-Surman, 1979
• Segisaurus Camp, 1936
• Segnosaurus Perle, 1979

Segnosaurus

• "Selimanosaurus" G. Maier, 2003 [nomen nudum -> Dicraeosaurus]
• Sellosaurus F. von Huene, 1908
• Serendipaceratops T. Rich and Vickers-Rich, 2003
• Shamosaurus Tumanova, 1983
• Shanag Turner, Hwang and Norell, 2007
• Shanshanosaurus Dong Z.M., 1977 [JSS -> Tarbosaurus]
• Shantungosaurus Hu C., 1973
• Shanxia P.M. Barrett, You, P. Upchurch and Burton, 1998
• Shanyangosaurus Xue, Zhang Y.H., Bi, Yue and Chen D., 1996
Shaochilong
• Shenzhouraptor Ji Q., Ji S., You, Zhang J.P., Yuan, Ji X., Li J. and Li Y.X., 2002 [possible bird]
• Shenzhousaurus Ji Q., Norell, Makovicky, Gao K., Ji S. and Yuan, 2003
• Shidaisaurus Wu X., P.J. Currie, Dong Z.M., Pan S. and Wang T., 2009
• Shixinggia Lü and Zhang B., 2005
• Shuangmiaosaurus You, Ji Q., Li J. and Li Y.X., 2003
• Shunosaurus Dong Z.M., Zhou S. and Zhang Y.H., 1983

Shunosaurus

• Shuvosaurus Chatterjee, 1993 [dinosaurian status currently in debate]
• Shuvuuia Chiappe, Norell and Clark, 1998
• Siamosaurus Buffetaut and Ingavat, 1986
• Siamotyrannus Buffetaut, Suteethorn and Tong, 1996
• Sigilmassasaurus D.A. Russell, 1996
• Silesaurus Dzik, 2003
• Siluosaurus Dong Z.M., 1997 [nomen dubium]
• Silvisaurus Eaton, 1960
• Similicaudipteryx He T., Wang X.L. and Zhou Z., 2008
• Sinocalliopteryx Ji S., Ji Q., Lü and Yuan, 2007
• Sinoceratops Xu X., Wang K., Zhao X. and Li D. J., 2010
• Sinocoelurus Yang Z.J. (as Young C.C.), 1942
• Sinornithoides D.A. Russell and Dong Z.M., 1994 (not 1993)

Sinornithoides

• Sinornithomimus Kobayashi and Lü, 2003
• Sinornithosaurus Xu X., Wang X. and Wu X., 1999

Sinornithosaurus

• Sinosauropteryx Ji Q. and Ji S., 1996

Sinosauropteryx

• Sinosaurus Yang Z.J. (as Young C.C.), 1948
• Sinotyrannus Ji Q., Ji S.-A. and Zhang L.-J., 2009
• Sinovenator Xu X., Norell, Wang X., Makovicky and Wu X., 2002
• Sinraptor P.J. Currie and Zhao X., 1994 (not 1993)

Sinraptor

• Sinucerasaurus Xu X. and Wang X., 2004 vide Xu X. and Norell, 2006 [JOS -> Sinusonasus]
• Sinusonasus Xu X. and Wang X., 2004
• Skorpiovenator Canale, Scanferla, Agnolin and F.E. Novas, 2008
• Sonidosaurus Xu X., Zhang X.H., Tan Q., Zhao X. and Tan L., 2006
• Sonorasaurus Ratkevich, 1998
• Sphaerotholus Williamson and Carr, 2003 [PSS -> Prenocephale]
• Sphenospondylus H.G. Seeley, 1882 [JSS -> Iguanodon]
• Spinophorosaurus K. Remes, F. Ortega, I. Fierro, U. Joger, R. Kosma, J.M.M. Ferrer, Chiappe, Dantas, Escaso, Gasulla, López, Pomares, B. Ribeiro, Sanz, Tent-Manclús, Faust, H. Joger, J. Joger, Krüger, Mudroch, Rabe, Ritter, Sommer, O.A. Ide and A. Maga, 2009
• Spinosaurus E. Stromer, 1915

Spinosaurus

• Spinostropheus Sereno, J.A. Wilson and Conrad, 2004
• Staurikosaurus Colbert, 1970

Staurikosaurus

• Stegoceras Lambe, 1902

Stegoceras

• Stegopelta Williston, 1905 [PSS -> Nodosaurus]
• Stegosaurides Bohlin, 1953 [nomen dubium]
• Stegosaurus O.C. Marsh, 1877

Stegosaurus

• Stenonychosaurus C.M. Sternberg, 1932 [JSS -> Troodon]
• Stenopelix H. von Meyer, 1857
• Stenotholus Giffin, Gabriel and Johnson, 1988 [JSS -> Stygimoloch]
• Stephanosaurus Lambe, 1914 [nomen dubium; PSS -> Lambeosaurus]
• Stereocephalus Lambe, 1902 / Lynch-Arribalzaga, 1884 -> Euoplocephalus
• Sterrholophus O.C. Marsh, 1891 [JSS -> Triceratops]
• Stokesosaurus J.H. Madsen, 1974
• Stormbergia Butler, 2005
• Strenusaurus J.F. Bonaparte, 1969 [JSS -> Riojasaurus]
• Streptospondylus H. von Meyer, 1830 [nomen dubium]
• Struthiomimus Osborn, 1916

Struthiomimus

• Struthiosaurus E. Bunzel, 1870
• Stygimoloch Galton and Sues, 1983

Stygimoloch

• Stygivenator Olshevsky vide Olshevsky, Ford and Yamamoto, 1995 [JSS -> Tyrannosaurus]
• Styracosaurus Lambe, 1913

Styracosaurus

• Suchomimus Sereno, Beck, Dutheil, Gado, Larsson, Lyon, Marcot, Rauhut, Sadleir, Sidor, Varricchio, G.P. Wilson and J.A. Wilson, 1998

Suchomimus

• Suchosaurus R. Owen, 1841 [nomen dubium; PSS ->Baryonyx]
• "Sugiyamasaurus" Lambert, 1990 [nomen nudum]
• Sulaimanisaurus Malkani, 2006
• Supersaurus Jensen, 1985

Supersaurus

• Suuwassea Harris and Dodson, 2004
• Suzhousaurus Li D., Peng C., You, Lamanna, Harris, Lacovara and Zhang J.P., 2007
• Symphyrophus E.D. Cope, 1878 [JSS -> Camptosaurus]
• Syngonosaurus H.G. Seeley, 1879 [nomen dubium]
• Syntarsus Raath, 1969 / L. Fairmaire, 1869 -> Megapnosaurus
• Syrmosaurus Maleev, 1952 [JSS -> Pinacosaurus]
• Szechuanoraptor Chure, 2001 [nomen ex dissertatione]

Szechuanosaurus

• Szechuanosaurus Yang Z.J. (as Young C.C.), 1942 [nomen dubium]

T

• Talarurus Maleev, 1952
• Talenkauen F.E. Novas, Cambiaso and Ambrosio, 2004
• Tangvayosaurus Allain, Taquet, Battail, Dejax, Richir, Veran, Limon-Duparcmeur, Vacant, Mateus, Sayarath, Khenthavong and Phouyavong, 1999
• Tanius Wiman, 1929
• Tanycolagreus Carpenter, C.A. Miles and Cloward, 2005
• Tanystrosuchus Kuhn, 1963 [nomen dubium; PSS -> Halticosaurus or Liliensternus]
• Tarascosaurus Le Loeuff and Buffetaut, 1991
• Tarbosaurus Maleev, 1955

Tarbosaurus

• Tarchia Maryanska, 1977
• Tastavinsaurus Canudo, Royo-Torres and Cuenca-Bescós, 2008
• Tatankacephalus W.L. Parsons and K.M. Parsons, 2009
• Tatankaceratops Ott & Larson, 2010

Tarchia

• Tatisaurus Simmons, 1965
• Taveirosaurus Telles Antunes and Sigogneau-Russell, 1991
• Tawa S.J. Nesbitt, N.D. Smith, R.B. Irmis, A.H. Turner, A. Downs and M.A. Norell, 2009
• Tawasaurus Yang Z.J. (as Young C.C.), 1982
• Tazoudasaurus Allain, Aquesbi, Dejax, C. Meyer, Monbaron, Montenat, Richir, Rochdy, D.A. Russell and Taquet, 2004
• Technosaurus Chatterjee, 1984
• Tehuelchesaurus T. Rich, Vickers-Rich, Gimenez, Cúneo, Puerta and Vacca, 1999
• Teinurosaurus F. Nopcsa, 1928 vide F. Nopcsa, 1929 [nomen dubium]
• Telmatosaurus F. Nopcsa, 1903
• Tenantosaurus Brown vide Chure and McIntosh, 1989 [nomen nudum -> Tenontosaurus]
• Tendaguria J.F. Bonaparte, Heinrich and Wild, 2000
• Tenontosaurus Ostrom, 1970

Tenontosaurus

• Tethyshadros F.M. Dalla Vecchia, 2009
• Tetragonosaurus Parks, 1931 [nomen rejectum -> Procheneosaurus]
• Texacephale N.R. Longrich, J. Sankey, and D. Tanke, 2010
• Texasetes Coombs, 1995
• Teyuwasu Kischlat, 1999
• Thecocoelurus F. von Huene, 1923 [nomen dubium]
• Thecodontosaurus Riley and Stutchbury, 1836
• Thecospondylus H.G. Seeley, 1882 [nomen dubium]
• Theiophytalia Brill and Carpenter, 2006
• Therizinosaurus Maleev, 1954

Therizinosaurus

• Therosaurus L.J. Fitzinger, 1840 [JOS -> Iguanodon]
• Thescelosaurus Gilmore, 1913
• Thespesius J. Leidy, 1856 [nomen dubium]
• Thotobolosaurus Ellenberger, 1972 [nomen nudum]
• Tianchisaurus Dong Z.M., 1993
• Tianchungosaurus Zhao X., 1983 [nomen nudum]
• Tianyulong Zheng X.T., You H.L., Xu X. and Dong Z.M., 2009
• Tianyuraptor Zheng, X., Xu, X., You, H., Zhao, Q. and Dong, Z. 2009
• Tianzhenosaurus Pang and Cheng Z., 1998
• Tichosteus E.D. Cope, 1877 [nomen dubium]
• Tienshanosaurus Yang Z.J. (as Young C.C.), 1937
• Timimus T. Rich and Vickers-Rich, 1994
• Titanosaurus R. Lydekker, 1877 [nomen dubium]
• Titanosaurus O.C. Marsh, 1877 / R. Lydekker, 1877 -> Atlantosaurus [nomen dubium]

Titanosaurus

• Tochisaurus Kurzanov and Osmólska, 1991
• Tomodon J. Leidy, 1865 / A. Duméril 1853 -> Diplotomodon
• Tonouchisaurus Barsbold, 1994 [nomen nudum]
• Tornieria Sternfeld, 1911
• Torosaurus O.C. Marsh, 1891

Torosaurus

• Torvosaurus Galton and Jensen, 1979

Torvosaurus

• Trachodon J. Leidy, 1856 [nomen dubium] (The original material has turned out to be from two different types of dinosaurs. This makes the name useless for scientific purposes.)
• Triceratops O.C. Marsh, 1889

Triceratops

• Trigonosaurus Campos, Kellner, Bertini and Santucci, 2005
• Trimucrodon Thulborn, 1973
• Troodon J. Leidy, 1856

Troodon

• Tsaagan Norell, Clark, Turner, Makovicky, Barsbold and Rowe, 2006
• Tsagantegia Tumanova, 1993
• Tsintaosaurus Yang Z.J. (as Young C.C.), 1958

Tsintaosaurus

• Tugulusaurus Dong Z.M., 1973
• Tuojiangosaurus Dong Z.M., Li X.M., Zhou S. and Zhang Y.H., 1977

Tuojiangosaurus

• Turanoceratops Nessov and Kaznyshkina vide Nessov, Kaznyshkina and Cherepanov, 1989
• Turiasaurus Royo-Torres, Cobos and Alcalá, 2006
• Tylocephale Maryanska and Osmólska, 1974
• Tylosteus J. Leidy, 1872 [nomen oblitum; SSS -> Pachycephalosaurus]
• Tyrannosaurus Osborn, 1905

Tyrannosaurus

• Tyrannotitan F.E. Novas, S. de Valai, P. Vickers-Rich and T. Rich, 2005
• Tyreophorus F. von Huene, 1929 [nomen nudum]

U

• Uberabatitan Salgado and Carvalho, 2008
• Udanoceratops Kurzanov, 1992
• Ugrosaurus Cobabe and Fastovsky, 1987 [JSS -> Triceratops]
• Uintasaurus Holland, 1919 [JSS -> Camarasaurus]
• Ultrasauros Jensen vide Olshevsky, 1991 [JSS -> Supersaurus]
• Ultrasaurus Kim H.M., 1983 [nomen dubium]
• Ultrasaurus Jensen, 1985 / Kim H.M., 1983 -> Ultrasauros
• Umarsaurus Maryanska and Osmólska, 1981 vide Olshevsky, 1992 [nomen nudum -> Barsdoldia]
• Unaysaurus Leal, Azevedo, Kellner and Da Rosa, 2004
• Unenlagia Nova and Puerta, 1997
• Unquillosaurus J.E. Powell, 1979
• Urbacodon Averianov and Sues, 2007
• Utahraptor Kirkland, Burge and Gaston, 1993

Utahraptor

V

• Valdoraptor Olshevsky, 1991
• Valdosaurus Galton, 1977
• Variraptor Le Loeuff and Buffetaut, 1998
• Vectensia Delair, 1982 [nomen nudum -> Hylaeosaurus]
• Vectisaurus J.W. Hulke, 1879 [JSS -> Iguanodon]
• Velafrons Gates, S.D. Sampson, Delgado deJesús, Zanno, Eberth, Hernandez-Rivera, Aguilló Martínez and Kirkland, 2007
• Velocipes F. von Huene, 1932 [nomen dubium]
• Velociraptor Osborn, 1924

Velociraptor

• Velocisaurus J.F. Bonaparte, 1991
• Venenosaurus Tidwell, Carpenter and S. Meyer, 2001
• Vitakridrinda Malkani, 2006
• Volkheimeria J.F. Bonaparte, 1979
• Vulcanodon Raath, 1972

W

• Wakinosaurus Okazaki, 1992
• Walgettosuchus F. von Huene, 1932
• Walkeria Chatterjee, 1987 / J. Fleming, 1823 -> Alwalkeria
• Walkersaurus Welles, H.P. Powell and Pickering vide Pickering, 1995 [nomen nudum -> Duriavenator]
• "Wangonisaurus" G. Maier, 2003 [nomen nudum -> Giraffatitan or Brachiosaurus]
• Wannanosaurus Hou, 1977
• Wintonotitan Scott A. Hocknull, Mathew A. White, Travis R. Tischler, Alex G. Cook, Naomi D. Calleja, Trish Sloan, David A. Elliott, 2009
• Wuerhosaurus Dong Z.M., 1973

Wuerhosaurus

• Wulagasaurus Godefroit, Hai, Yu and Lauters, 2008
• Wyomingraptor [Anonymous], 1997 [nomen nudum -> Allosaurus]

X

• Xenoposeidon Taylor and Naish, 2007
• Xenotarsosaurus R.D. Martínez, Gimenez, Rodriguez and Bochatey, 1986
• Xianshanosaurus Lü, Xu L., Jiang X., Jia S., Li M., Yuan, Zhang X.L. and Ji Q., 2009
• Xiaosaurus Dong Z.M. and Tang Z., 1983
• Xinghesaurus Hasegawa, Carpenter, Lamanna and Xu X., 2009 [nomen nudum]
• Xinjianogovenator Rauhut and Xu X., 2005
• Xiongguanlong Daqing Li, Mark A. Norell, Ke-Qin Gao, Nathan D. Smith and Peter J. Makovicky, 2009
• Xuanhanosaurus Dong Z.M., 1984
• Xuanhuaceratops Zhao X., Cheng Z., Xu X. and Makovicky, 2006
• Xuanhuasaurus Zhao X. (as Chao S.), 1985 [nomen nudum -> Xuanhuaceratops]

Y

• Yaleosaurus F. von Huene, 1932 [JSS -> Anchisaurus]
• Yamaceratops Makovicky and Norell, 2006
• Yandusaurus He X., 1979
• Yangchuanosaurus Dong Z.M., Chang Y.H. (as Chang Y.), Li X.M. and Zhou S., 1978

Yanchuanosaurus

• Yaverlandia Galton, 1971
• Yibinosaurus Ouyang H., 2001
• Yimenosaurus Bai vide Bai, Yang J. and Wang G.H., 1990
• Yingshanosaurus Zhou S., 1984 [nomen nudum]
• Yinlong Xu X., Forster, Clark and Mo, 2006
• Yixianosaurus Xu X. and Wang X., 2003
• Yuanmousaurus Lü, Li S., Ji Q., Wang G.F., Zhang J.H. and Dong Z.M., 2006
• Yubasaurus He X., 1975 ? [nomen nudum -> Yandusaurus]
• Yunnanosaurus Yang Z.J. (as Young C.C.), 1942
• Yunxiansaurus Zhou S., 2005 [nomen nudum]

Z

• Zalmoxes Weishampel, Jianu, Csiki and D.B. Norman, 2003
• Zanabazar Norell, M.A.; Makovicky, P.J., Bever, G.S., Balanoff, A.M., Clark, J.M., Barsbold, R. and Rowe, T., 2009
• Zapalasaurus Salgado, Carvalho and Garrido, 2006
• Zapsalis E.D. Cope, 1876 [nomen dubium]
• Zephyrosaurus Sues, 1980
• Zhejiangosaurus Lü , Jin X., Sheng, Li Y.H., Wang G.P. and Azuma, 2007
• Zhongyuansaurus Xu L., Lü, Zhang X.L., Jia S., Hu W., Zhang J.M., Wu Y. and Ji Q., 2007
• Zhuchengosaurus Zhao X., Li D., Han G., Zhao H., Liu F., Li L. and Fang X., 2007
• Zigongosaurus Hou, Chao and Chu, 1976 [JSS -> Mamenchisaurus]
• Zizhongosaurus Dong Z.M., Zhou S. and Zhang Y.H., 1983
• Zuniceratops Wolfe and Kirkland, 1998
• Zupaysaurus Arcucci and R.A. Coria, 2003