DINOSAUR GENERA

since - October 28, 1995 / last updated - February 5, 2012
Thank you to George Olshevsky ("Mesozoic Meanderings #3")
for the original listing on October 23, 1995 and the help to keep this list current;
and also to all the other contributors from the Dinosaur Mailing List.
NOW available: d-genera.pdf

Genera count = 1358 (including 113 not presently considered to be dinosaurian)
[nomen ex dissertatione] = name appears in a dissertation
[nomen dubium] = name usually based on more than one type specimen
[nomen nudum] = name lacking a description and/or a type specimen
[nomen oblitum] = name forgotten for at least 50 years
[nomen rejectum] = name rejected by the ICZN
non = incorrect reference by the first to a name by the second author
vide = name attributed to the first author by the second author
/ = name preoccupied by the second author
JOS -> Junior Objective Synonym of the indicated genus
JSS -> Junior Subjective Synonym of the indicated genus
PSS -> Possible Subjective Synonym of the indicated genus
SSS -> Suppressed Senior Synonym of the indicated genus

Aardonyx: A.M. Yates, M.F. Bonnan, J. Neveling, A. Chinsamy & M.G. Blackbeard, 2009
"Abdallahsaurus": G. Maier, 2003 [nomen nudum -> Giraffatitan]
Abelisaurus: J.F. Bonaparte & F.E. Novas, 1985
Abrictosaurus: J.A. Hopson, 1975
Abrosaurus: Ouyang H., 1989
Abydosaurus: D. Chure, B.B. Britt, J.A. Whitlock & J.A. Wilson, 2010
Acanthopholis: T.H. Huxley, 1867 [nomen dubium]
Achelousaurus: S.D. Sampson, 1995
Achillesaurus: A.G. Martinelli & E.I. Vera, 2007
Achillobator: A. Perle, M.A. Norell & J.M. Clark, 1999
Acracanthus: W.R. Langston, 1947 vide N.J. Czaplewski, R.L. Cifelli & W.R. Langston, 1994 [nomen ex dissertatione -> Acrocanthosaurus]
Acristavus: T.A. Gates, J.R. Horner, R.R. Hanna & C.R. Nelson, 2011
Acrocanthosaurus: J.W. Stovall & W.R. Langston, 1950
Adamantisaurus: R.A. Santucci & Bertini, 2006
Adasaurus: R. Barsbold, 1983
Adeopapposaurus: R.N. Martínez, 2009
Aegyptosaurus: E. Stromer, 1932
Aeolosaurus: J.E. Powell, 1987
Aepisaurus: P. Gervais, 1852 [nomen dubium]
Aerosteon: P.C. Sereno, R.N. Martínez, J.A. Wilson, D.J. Varricchio, O.A. Alcober & H.C.E. Larsson, 2008
Aetonyx: R. Broom, 1911 [JSS -> Massospondylus]
Afrovenator: P.C. Sereno, J.A. Wilson, H.C.E. Larsson, D.B. Dutheil & H-D Sues, 1994
Agathaumas: E.D. Cope, 1872 [nomen dubium; PSS -> Nedoceratops, Torosaurus or Triceratops]
Agilisaurus: Peng G., 1990
Agnosphitys: Fraser, Padian, Walkden & Davis, 2002
Agrosaurus: H.G. Seeley, 1891 [JSS -> Thecodontosaurus]
Agujaceratops: S.G. Lucas, R. Sullivan & Hunt, 2006
Agustinia: J.F. Bonaparte, 1999
Ahshislepelta: M.E. Burns & R.M. Sullivan, 2011
Airakoraptor: A. Perle, M.A. Norell & J.M. Clark, 1999 [nomen nudum]
Ajkaceratops: Ösi A., R.J. Butler & D.B. Weishampel, 2010
Alamosaurus: Gilmore, 1922
Alashansaurus: D. Chure, 2001 [nomen ex dissertatione -> Shaochilong]
Alaskacephale: R. Sullivan, 2006
Albalophosaurus: T. Ohashi & P.M. Barrett, 2009
Albertaceratops: M.J. Ryan, 2007
Albertonykus: N.R. Longrich & P.J. Currie, 2008
Albertosaurus: H.F. Osborn, 1905
Albinykus: S.J. Nesbitt, J.A. Clarke, A.H. Turner & M.A. Norell, 2011
Alectrosaurus: Gilmore, 1933
Aletopelta: Ford & J.I. Kirkland, 2001
Algoasaurus: R. Broom, 1904 [nomen dubium]
Alioramus: Kurzanov, 1976
Aliwalia: P.M. Galton, 1985 [JSS -> Eucnemesaurus]
Allosaurus: O.C. Marsh, 1877
Alocodon: Thulborn, 1973
Altirhinus: D.B. Norman, 1998
Altispinax: F. von Huene, 1923 [nomen dubium]
Alvarezsaurus: J.F. Bonaparte, 1991
Alwalkeria: S. Chatterjee & Creisler, 1994
Alxasaurus: D.A. Russell & Dong Z-M, 1994 (not 1993)
Amargasaurus: L.J. Salgado & J.F. Bonaparte, 1991
Amargatitanis: Apesteguía, 2007
Amazonsaurus: A.B. Carvalho, Avilla & L.J. 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, 1877 / Barkas, 1870 -> Anchisaurus
Amtocephale: M. Watabe, K. Tsogtbaatar & R.M. Sullivan, 2011
Amtosaurus: Kurzanov & Tumanova, 1978 [nomen dubium]
Amurosaurus: Y.L. Bolotsky & Kurzanov, 1991
Amygdalodon: Cabrera, 1947 [nomen dubium]
Anabisetia: R.A. Coria & J.O. Calvo, 2002
Anasazisaurus: Hunt & S.G. Lucas, 1993 [PSS –> Gryposaurus or Kritosaurus]
Anatosaurus: Lull & Wright, 1942 [JSS -> Edmontosaurus]
All species of "Anatosaurus", except "Anatosaurus copei", were assimilated into "Edmontosaurus" in 1979. "Anatosaurus copei" was changed to "Anatotitan" in 1990.
Anatotitan: M.K. Brett-Surman vide R.E. Chapman & M.K. Brett-Surman, 1990
Anchiceratops: B. Brown, 1914
Anchiornis: Xu X., Zhao Q., M.A. Norell, C. Sullivan, Hone, G.M. Erickson, Wang X-L, Han F. & Guo Y., 2009
Anchisaurus: O.C. Marsh, 1885
Andesaurus: J.O. Calvo & J.F. Bonaparte, 1991
Angaturama: A.W.A. Kellner & D. Campos, 1996 [JSS -> Irritator]
Angolatitan: O. Mateus, L.L. Jacobs, A.S. Schulp, M.J. Polcyn, T.S. Tavares, A.B. Neto, M.L. Morais & M.T. Antunes, 2011
Angulomastacator: J.R. Wagner & T.M. Lehman, 2009
Aniksosaurus: R.D. Martínez & F.E. Novas, 2006
Animantarx: K. Carpenter, J.I. Kirkland, Burge & J. Bird, 1999
Ankylosaurus: B. Brown, 1908
Anodontosaurus: C.M. Sternberg, 1929 [JSS -> Dyoplosaurus]
Anoplosaurus: H.G. Seeley, 1879
Anserimimus: R. Barsbold, 1988
Antarctopelta: L.J. Salgado & Gasparini, 2006
Antarctosaurus: F. von Huene, 1929
Antetonitrus: A.M. Yates & Kitching, 2003
Antrodemus: J. Leidy, 1870 [nomen dubium; PSS -> Allosaurus]
Apatodon: O.C. Marsh, 1877 [nomen dubium; PSS -> Allosaurus]
Apatosaurus: O.C. Marsh, 1877
Appalachiosaurus: T.D. Carr, T.E. Williamson & Schwimmer, 2005
Aragosaurus: J.L. Sanz, Buscalioni, Casanovas-Cladellas (as Casanovas) & Santafe, 1987
Aralosaurus: Rozhdestvensky, 1968
Araucanoraptor: F.E. Novas, 1997 [nomen dubium -> Neuquenraptor]
Archaeoceratops: Dong Z-M & Y. Azuma, 1997
Archaeodontosaurus: E. Buffetaut, 2005
Archaeoraptor: Czerkas vide C.P. Sloan, 1999 vide Olson, 2000 [nomen rejectum (pending) -> Microraptor]
Archaeornithoides: Elzanowski & Wellnhofer, 1992
Archaeornithomimus: D.A. Russell, 1972
Arcusaurus: A.M. Yates, M.F. Bonnan & J. Neveling, 2011
Arenysaurus: X. Pereda-Suberbiola, J.I. Canudo, P. Cruzado-Caballero, J.L. Barco, N. López-Martínez, O. Oms & J.I. Ruíz-Omeñaca, 2009
Argentinosaurus: J.F. Bonaparte & R.A. Coria, 1993
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 & Y.L. Bolotsky, 2010
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: H.F. Osborn, 1924 [nomen dubium]
Asilisaurus: S.J. Nesbitt, C.A. Sidor, R.B. Irmis, K.D. Angielczyk, R.M.H. Smith, & Tsuji L.A., 2010
Astrodon: Johnston, 1859 [nomen dubium; PSS -> Pleurocoelus]
Astrodonius: Kuhn, 1961 [JOS -> Astrodon]
Astrodontaurus: C. Johnston, 1858 vide Kranz, 2004 [JOS -> Astrodon]
Asylosaurus: P.M. Galton, 2007
Atacamatitan: A.W.A. Kellner, Rubilar-Rogers, Vargas & Suárez, 2011
Atlantosaurus: O.C. Marsh, 1877 [nomen dubium; PSS –> Apatosaurus or Camarasaurus]
Atlasaurus: Monbaron, D.A. Russell & Taquet, 1999
Atlascopcosaurus: T. Rich & Vickers-Rich (as P. Rich), 1989
Atrociraptor: P.J. Currie & D.J. Varricchio, 2004
Atsinganosaurus: G. Garcia, S. Amico, F. Fournier, E. Thouand & X. Valentin, 2010
Aublysodon: J. Leidy, 1868 [nomen dubium; PSS –> Albertosaurus or Deinodon]
Aucasaurus: R.A. Coria, L.M. Chiappe & Dingus, 2002
Augustia: J.F. Bonaparte, 1998 / Zariquiey, 1927 -> Agustinia
Auroraceratops: You H, Li D-Q, Ji Q, M.C. Lamanna & P. Dodson, 2005
Australodocus: Remes, 2007
Australovenator: S.A. Hocknull, M.A. White, T.R. Tischler, A.G. Cook, N.D. Calleja, T. Sloan & D.A. Elliott, 2009
Austrocheirus: M.D. Ezcurra, F.L. Agnolin & F.E. Novas, 2010
Austroraptor: F.E. Novas, D. Pol, Canale, Porfiri & J.O. Calvo, 2008
Austrosaurus: Longman, 1933
Avaceratops: P. Dodson, 1986
Aviatyrannis: O.W.M. Rauhut, 2003
Avimimus: Kurzanov, 1981
Avipes: F. von Huene, 1932 [nomen dubium]

Bactrosaurus: Gilmore, 1933
Bagaceratops: T. Maryanska & H. Osmólska, 1975
Bagaraatan: H. Osmólska, 1996
Bahariasaurus: E. Stromer, 1934
Bainoceratops: Tereschenko & V.R. Alifanov, 2003
Bakesaurus: Zhou S., 2005 [nomen nudum]
Balaur: Z. Csiki, M. Vremir, S.L. Brusatte & M.A. Norell, 2010
Balochisaurus: M.S. Malkani, 2006
Bambiraptor: D.A. Burnham, K.L. Derstler, P.J. Currie, R.T. Bakker, Zhou Z. & J.H. Ostrom, 2000
Banji: Xu X. & Han F., 2010
Baotianmansaurus: Zhang X.L., Lü J., Xu L., Li J.H., Yang L.K., Hu W., Jia S., Ji Q. & Zhang C., 2009
Barackosaurus: [Anonymous], 2010 [nomen nudum; in The Dana Quarry Report]
Barapasaurus: Jain, T.S. Kutty, Roy-Chowdhury & S. Chatterjee, 1975
Barilium: D.B. Norman, 2010
Barosaurus: O.C. Marsh, 1890
Barrosasaurus: L.J. Salgado & R.A. Coria, 2009
Barsboldia: T. Maryanska & H. Osmólska, 1981
Baryonyx: A.J. Charig & A.C. Milner, 1986
Bashunosaurus: Li K., 1998 [nomen nudum; possibly -> Datousaurus]
Baurutitan: A.W.A. Kellner, D. Campos & Trotta, 2005
Bayosaurus: R.A. Coria, P.J. Currie & Carabajal, 2006 [nomen nudum]
Becklespinax: G. Olshevsky, 1991
"Beelemodon": R.T. Bakker, 1997 [nomen nudum]
Beipiaosaurus: Xu X., Tang Z. & Wang X-L, 1999
Beishanlong: P.J. Makovicky, Li D-Q, Gao K-Q, M. Lewin, G.M. Erickson & M.A. Norell, 2009
Bellusaurus: Dong Z-M, 1990
Berberosaurus: Allain, Tykoski, Aquesbi, Jalil, Monbaron, D.A. Russell & Taquet, 2007
Betasuchus: F. von Huene, 1932 [nomen dubium]
Bienosaurus: Dong Z-M, 2001
Bihariosaurus: Marinescu, 1989
Bilbeyhallorum: Burge, J. Bird, McClelland & Cicconetti, 1999 [nomen nudum -> Cedarpelta]
Bissektipelta: Parish & P.M. Barrett, 2004
Bistahieversor: T.D. Carr & T.E. Williamson, 2010
"Blancocerosaurus": G. Maier, 2003 [nomen nudum -> Giraffatitan]
Blasisaurus: P. Cruzado-Caballero, X. Pereda-Suberbiola & J.I. Ruíz-Omeñaca, 2010
Blikanasaurus: P.M. Galton & van Heerden, 1985
Bolong: Wu W-H, P. Godefroit & Hu D, 2010
Bonapartenykus: F.L. Agnolin, J.E. Powell, F.E. Novas & M. Kundrát, 2011
Bonatitan: A.G. Martinelli & Forasiepi, 2004
Bonitasaura: Apesteguía, 2004
Borealosaurus: You H, Ji Q., M.C. Lamanna, Li J.L. & Li Y.X., 2004
Borogovia: H. Osmólska, 1987
Bothriospondylus: R. Owen, 1875
Brachiosaurus: Riggs, 1903
Brachyceratops: Gilmore, 1914
Brachylophosaurus: C.M. Sternberg, 1953
Brachypodosaurus: Chakravarti, 1934 [nomen dubium]
Brachyrophus: E.D. Cope, 1878 [JSS -> Camptosaurus]
Brachytrachelopan: O.W.M. Rauhut, K. Remes, R. Fechner, G. Cladera & P. Puerta, 2005
Bradycneme: Harrison & C.A. Walker, 1975 [nomen dubium; PSS -> Elopteryx]
Breviceratops: Kurzanov, 1990
Brohisaurus: M.S. Malkani, 2003
Brontodiplodocus: [Anonymous], 2010 [nomen nudum; in The Dana Quarry Report]
Brontomerus: M.P. Taylor, M.J. Wedel & R.L. Cifelli, 2011
Brontoraptor: Redman, 1995 [nomen nudum]
Brontosaurus: O.C. Marsh, 1879 [JSS -> Apatosaurus]
Bruhathkayosaurus: Yadagiri & Ayyasami, 1987 [nomen dubium]
Bugenasaura: P.M. Galton, 1995 [PSS -> Thescelosaurus]
Buitreraptor: P.J. Makovicky, Apesteguía & Agnolín, 2005
Byranjaffia: Novacek, 2002 [nomen nudum -> Byronosaurus]
Byronosaurus: M.A. Norell, P.J. Makovicky & J.M. Clark, 2000

Caenagnathasia: P.J. Currie, Godfrey & 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: P.M. Galton, 1980
Camarasaurus: E.D. Cope, 1877
Camelotia: P.M. Galton, 1985
Camposaurus: Hunt, S.G. Lucas, Heckert, R. Sullivan & Lockley, 1998
Camptonotus: O.C. Marsh, 1879 / Uhler, 1864 -> Camptosaurus
Camptosaurus: O.C. Marsh, 1885
Campylodon: F. von Huene, 1929 / G. Cuvier & A. Valenciennes, 1832 -> Campylodoniscus
Campylodoniscus: Kuhn, 1961 [nomen dubium]
"Capitalsaurus": Kranz, 1998 [nomen nudum]
Carcharodontosaurus: E. Stromer, 1931
Cardiodon: R. Owen, 1841 [nomen dubium; PSS -> Cetiosaurus]
Carnosaurus: F. von Huene, 1929 [nomen nudum]
Carnotaurus: J.F. Bonaparte, 1985
Caseosaurus: Hunt, S.G. Lucas, Heckert, R. Sullivan & Lockley, 1998
Cathartesaura: Gallina & Apesteguía, 2005
Cathetosaurus: Jensen, 1988 [JSS -> Camarasaurus]
Caudipteryx: Ji Q., P.J. Currie, M.A. Norell & Ji S., 1998
Caudocoelus: F. von Huene, 1932 [JOS -> Teinurosaurus]
Caulodon: E.D. Cope, 1877 [JSS -> Camarasaurus]
Cedarosaurus: Tidwell, K. Carpenter & Brooks, 1999
Cedarpelta: K. Carpenter, J.I. Kirkland, Burge & J. Bird, 2001
Cedrorestes: Gilpin, DiCroce & K. Carpenter, 2006
Centrosaurus: Lambe, 1904 / L.J. Fitzinger, 1843 -> Eucentrosaurus
Cerasinops: Chinnery & J.R. Horner, 2007
Ceratonykus: V.R. Alifanov & R. Barsbold, 2009
Ceratops: O.C. Marsh, 1888 / C.S. Rafinesque, 1815 -> Proceratops [nomen dubium]
Ceratosaurus: O.C. Marsh, 1884
Cetiosauriscus: F. von Huene, 1927
Cetiosaurus: R. Owen, 1841
Changchunsaurus: Zan S.Q., Chen J., Jin L.Y. & Li T., 2005
Changtusaurus: Zhao X., 1983 [nomen nudum]
Chaoyangsaurus: Zhao X., Cheng Z. & Xu X., 1999
Charonosaurus: P. Godefroit, Zan & Jin L., 2000
Chasmosaurus: Lambe, 1914
Chassternbergia: R.T. Bakker, 1988
Chebsaurus: Mahammed, Läng, Mami, Mekahli, Benhamou, Bouterfa, Kacemi, Chérief, Chaouati & Taquet, 2005
Cheneosaurus: Lambe, 1917 [JSS -> Hypacrosaurus]
Chialingosaurus: Yang Z.J. (as Young C.C.), 1959
Chiayusaurus: Bohlin, 1953 [nomen dubium]
Chihuahuasaurus: Ratkevich vide [Anonymous], 1997 [nomen nudum -> Sonorasaurus]
Chilantaisaurus: Hu S., 1964
Chindesaurus: R.A. Long & 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. & Xu X., 2007
Chirostenotes: Gilmore, 1924
Chondrosteosaurus: R. Owen, 1876 [nomen dubium]
Chromogisaurus: M.D. Ezcurra, 2010
Chuandongocoelurus: He X., 1984
Chuanjiesaurus: Fang, Pang, Lü, Zhang Z., Pan, Wang Y., Li X.K. & Cheng Z., 2000
Chubutisaurus: del Corro, 1974
Chungkingosaurus: Dong Z-M, Zhou S. & Zhang Y.H., 1983
Chuxiongosaurus: Lü J, Y. Kobayashi, Li T-G & Zhong S, 2010
Cinizasaurus: Heckert, 1997 vide S.J. Nesbitt, Irmis & Parker, 2007 [nomen ex dissertatione]
Cionodon: E.D. Cope, 1874 [nomen dubium]
Citipati: J.M. Clark, M.A. Norell & R. Barsbold, 2001
Claorhynchus: E.D. Cope, 1892 [nomen dubium; PSS -> Triceratops]
Claosaurus: O.C. Marsh, 1890
Clasmodosaurus: F. Ameghino, 1898 [nomen dubium]
Clevelanotyrannus: R.T. Bakker, Williams & 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 & Eberth, 2010
Coelophysis: E.D. Cope, 1889
Coelosaurus: J. Leidy, 1865 / [Anonymous, known to be R. Owen], 1854 -> Ornithomimus
Coeluroides: F. von Huene & Matley, 1933 [nomen dubium]
Coelurosaurus: F. von Huene, 1929 [nomen nudum]
Coelurus: O.C. Marsh, 1879
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 S.J. Nesbitt, Irmis & Parker, 2007 [nomen ex dissertatione]
Compsognathus: J.A. Wagner, 1859
Compsosuchus: F. von Huene & Matley, 1933
Concavenator: F. Ortega, F. Escaso & J.L. Sanz, 2010
Conchoraptor: R. Barsbold, 1986
Condorraptor: O.W.M. Rauhut, 2005
Corythosaurus: B. Brown, 1914
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 & D.A. Russell, 1998
Cruxicheiros: R.B.J. Benson & J.D. Radley, 2009
Cryolophosaurus: Hammer & Hickerson, 1994
Cryptodraco: R. Lydekker, 1889 [JOS -> Cryptosaurus]
Cryptoraptor: Hunt, 1994 vide S.J. Nesbitt, Irmis & Parker, 2007 [nomen ex dissertatione]
Cryptosaurus: H.G. Seeley, 1869
Cryptovolans: Czerkas, Zhang D., Li J.L. & Li Y.X., 2002 [PSS -> Microraptor]
Cumnoria: H.G. Seeley, 1888
Cylindricodon: R. Owen vide Ingles & Sawyer, 1979 / G. Jaeger, 1828 -> Hylaeosaurus

Daanosaurus: Ye, Gao Y. & Jiang S., 2005
Dacentrurus: F.A. Lucas, 1902
Dachungosaurus: Zhao X. (as Chao S.), 1985 [nomen nudum]
Daemonosaurus: H-D Sues, S.J. Nesbitt, D.S. Berman & A.C. Henrici, 2011
Dakotadon: G.S. Paul, 2008
Dalianraptor: Gao C. & Liu J.Y., 2005 [possible bird]
Damalasaurus: Zhao X., 1983 [nomen nudum]
Dandakosaurus: Yadagiri, 1982 [nomen dubium]
Danubiosaurus: E. Bunzel, 1871 [nomen dubium; PSS -> Struthiosaurus]
Daptosaurus: B. Brown vide D. Chure & McIntosh, 1989 [nomen nudum –> Deinonychus]
Dashanpusaurus: Peng G., Ye, Gao Y., Shu & Jiang S., 2005
Daspletosaurus: D.A. Russell, 1970 [PSS -> Albertosaurus]
Datousaurus: Dong Z-M & Tang Z., 1984
Daxiatitan: You H, Li D-Q, Zhou L. & Ji Q, 2008
Deinocheirus: H. Osmólska & Roniewicz, 1970
Deinodon: J. Leidy, 1856 [nomen dubium; PSS -> Albertosaurus]
Deinonychus: J.H. Ostrom, 1969
Delapparentia: J.I. Ruíz-Omeñaca, 2011
Deltadromeus: P.C. Sereno, Duthiel, Iarochene, H.C.E. Larsson, Lyon, Magwene, Sidor, D.J. Varricchio & J.A. Wilson, 1996
Demandasaurus: F.T. Fernández-Baldor, J.I. Canudo, P. Huerta, D. Montero, X. Pereda-Suberbiola & L.J. Salgado, 2010
Denversaurus: R.T. Bakker, 1988
Diabloceratops: J.I. Kirkland & D.D. DeBlieux, 2010
Diamantinasaurus: S.A. Hocknull, M.A. White, T.R. Tischler, A.G. Cook, N.D. Calleja, T. Sloan & D.A. Elliott, 2009
Diceratops: Lull vide Hatcher, 1905 / Foerster, 1868 -> Diceratus (unnecessary) * Nedoceratops
Diceratus: O. Mateus, 2008 [JOS -> Nedoceratops]
Diclonius: E.D. Cope, 1876 [nomen dubium]
Dicraeosaurus: Janensch, 1914
Didanodon: H.F. Osborn, 1902 [nomen dubium; PSS -> Lambeosaurus]
Dilong: Xu X., M.A. Norell, Kuang, Wang X-L, Zhao Q. & Jia C., 2004
Dilophosaurus: Welles, 1970
Dimodosaurus: Pidancet & Chopard, 1862 [nomen dubium; PSS -> Plateosaurus]
Dinheirosaurus: J.F. Bonaparte & O. Mateus, 1999
Dinodocus: R. Owen, 1884 [nomen dubium]
Dinosaurus: L. Rütimeyer, 1856 / Fischer von Waldheim, 1847 -> Gresslyosaurus
Dinotyrannus: G. Olshevsky vide G. Olshevsky, Ford & Yamamoto, 1995 [JSS -> Tyrannosaurus]
Diodorus: C.F. Kammerer, S.J. Nesbitt & N.H. Shubin, 2011
Diplodocus: O.C. Marsh, 1878
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: G.S. Paul, 2008 [PSS -> Mantellisaurus]
Domeykosaurus: Rubilar-Rogers (as Rubilar) & Vargas vide [Anonymous], 2003 [nomen nudum; in May 29, 2003 Reuters news reports]
Dongbeititan: Wang X-R, You H, Meng Q., Gao C., Chang X., & Liu J.Y., 2007
Dongyangosaurus: Lü, Y. Azuma, Chen R., Zheng W. & Jin X., 2008
Doryphorosaurus: F. Nopcsa, 1916 [JOS -> Kentrosaurus]
Draconyx: O. Mateus & Telles Antunes, 2001
Dracopelta: P.M. Galton, 1980
Dracorex: R.T. Bakker, R. Sullivan, Porter, P. Larson & Saulsbury, 2006 [PSS -> Pachycephalosaurus]
Dracovenator: A.M. Yates, 2006 [for 2005]
Dravidosaurus: Yadagiri & Ayyasami, 1979
Drinker: R.T. Bakker, P.M. Galton, Siegwarth & Filla, 1990
Dromaeosauroides: P. Christiansen & Bonde, 2003
Dromaeosaurus: Matthew & B. Brown, 1922
Dromiceiomimus: D.A. Russell, 1972
Dromicosaurus: van Hoepen, 1920 [JSS -> Massospondylus]
Dromomeron: Irmis, S.J. Nesbitt, Padian, N.D. Smith, A.H. Turner, Woody & A. Downs, 2007
Drusilasaura: C. Navarrete, G. Casal & R.D. Martínez, 2011
Dryosaurus: O.C. Marsh, 1894
Dryptosauroides: F. von Huene & Matley, 1933 [nomen dubium]
Dryptosaurus: O.C. Marsh, 1877
Dubreuillosaurus: Allain, 2005
Duriatitan: P.M. Barrett, R.B.J. Benson & P. Upchurch, 2010
Duriavenator: R.B.J. Benson, 2008
Dynamosaurus: H.F. Osborn, 1905 [JSS -> Tyrannosaurus]
Dyoplosaurus: Parks, 1924
Dysalotosaurus: Virchow, 1919 [JSS -> Dryosaurus]
Dysganus: E.D. Cope, 1876 [nomen dubium]
Dyslocosaurus: McIntosh, Coombs & D.A. Russell, 1992
Dystrophaeus: E.D. Cope, 1877
Dystylosaurus: Jensen, 1985 [JSS -> Supersaurus]

Echinodon: R. Owen, 1861
Edmarka: R.T. Bakker, Kralis, Siegwarth & Filla, 1992
Edmontonia: C.M. Sternberg, 1928
Edmontosaurus: Lambe, 1917
Efraasia: P.M. Galton, 1973
Einiosaurus: S.D. Sampson, 1995
Ekrixinatosaurus: J.O. Calvo, Rubilar-Rogers & Moreno, 2004
Elaphrosaurus: Janensch, 1920
Elmisaurus: H. Osmólska, 1981
Elosaurus: Peterson & Gilmore, 1902 [JSS -> Apatosaurus]
Elrhazosaurus: P.M. Galton, 2009
Elvisaurus: Holmes, 1993 [nomen nudum -> Cryolophosaurus]
Emausaurus: Haubold, 1990
Embasaurus: Riabinin, 1931 [nomen dubium]
Enigmosaurus: R. Barsbold & A. Perle vide R. Barsbold, 1983 [JSS -> Erlikosaurus]
Eobrontosaurus: R.T. Bakker, 1998
Eocarcharia: P.C. Sereno & S.L. Brusatte, 2008
Eoceratops: Lambe, 1915 [PSS -> Chasmosaurus]
Eocursor: R.J. Butler, R.M.H. Smith & D.B. Norman, 2007
Eodromaeus: R.N. Martinez, P.C. Sereno, O.A. Alcober, C.E. Colombi, P.R. Renne, I.P. Montañez & B.S. Currie, 2011
"Eohadrosaurus": J.I. Kirkland, 1997 [nomen nudum -> Eolambia]
Eolambia: J.I. Kirkland, 1998
Eomamenchisaurus: Lü, Li T.G., Zhong, Ji Q. & Li S.X., 2008
Eoraptor: P.C. Sereno, C.A. Forster, Rogers & Monetta, 1993
Eotriceratops: Wu X., Brinkman, Eberth & Braman, 2007
Eotyrannus: Hutt, Naish, Martill, Barker & Newberry, 2001
Epachthosaurus: J.E. Powell, 1990
Epanterias: E.D. Cope, 1878 [nomen dubium; PSS -> Allosaurus or Saurophaganax]
Epichirostenotes: R.M. Sullivan, S.E. Jasinski & M.P.A. Van Tomme, 2011
Epidendrosaurus: Zhang F., Zhou Z., Xu X. & Wang X-L, 2002
Epidexipteryx: Zhang F., Zhou Z., Xu X., Wang X-L & C. Sullivan, 2008
Equijubus: You H, Luo, Shubin, Witmer, Tang Z. & Tang F., 2003
Erectopus: F. von Huene, 1922
Erketu: Ksepka & M.A. Norell, 2006
Erliansaurus: Xu X., Zhang X.H., P.C. Sereno, Zhao X., Kuang, Han J. & Tan L., 2002
Erlikosaurus: A. Perle vide R. Barsbold & A. Perle, 1980
Eshanosaurus: Xu X., Zhau X. & J.M. Clark, 2001
Euacanthus: R. Owen vide Tennyson, 1897 [nomen nudum; JOS -> Polacanthus]
Eucamerotus: J.W. Hulke, 1872 [nomen dubium]
Eucentrosaurus: D. Chure & McIntosh, 1989 [JOS -> Centrosaurus]
Eucercosaurus: H.G. Seeley, 1879 [nomen dubium; PSS -> Acanthopholis]
Eucnemesaurus: van Hoepen, 1920
Eucoelophysis: R. Sullivan & S.G. Lucas, 1999
Eugongbusaurus: F. Knoll, 1999
Euhelopus: Romer, 1956
Euoplocephalus: Lambe, 1910
Eureodon: B. Brown vide G. Olshevsky, 1991 [nomen nudum -> Tenontosaurus]
Euronychodon: Telles Antunes & Sigogneau-Russell, 1991
Europasaurus: O. Mateus, Laven & Knötschke vide Sander, O. Mateus, Laven & Knötschke, 2006
Euskelosaurus: T.H. Huxley, 1866
Eustreptospondylus: A.D. Walker, 1964

Fabrosaurus: Ginsburg, 1964 [nomen dubium]
Falcarius: J.I. Kirkland, L.E. Zanno, S.D. Sampson, J.M. Clark & D.D. DeBlieux, 2005
Fenestrosaurus: H.F. Osborn, 1924 [nomen nudum -> Oviraptor]
Ferganasaurus: V.R. Alifanov & A. Averianov, 2003
Ferganocephale: A. Averianov, T. Martin & Bakirov, 2005
Foraminacephale: R.K. Schott, 2011 [nomen ex dissertatione]
Frenguellisaurus: F.E. Novas, 1986 [JSS -> Herrerasaurus]
Fruitadens: R.J. Butler, P.M. Galton, L.B. Porro, L.M. Chiappe, D.M. Henderson & G.M. Erickson, 2009
Fukuiraptor: Y. Azuma & P.J. Currie, 2000
Fukuisaurus: Y. Kobayashi & Y. Azuma, 2003
Fukuititan: Y. Azuma & M. Shibata, 2010
Fulengia: Carroll & P.M. Galton, 1977 [JSS -> Lufengosaurus]
Fulgurotherium: F. von Huene, 1932
Fusinasus: Hutt, 2002 [nomen nudum -> Eotyrannus]
Fusuisaurus: Mo, Wang W., Huang Z., Huang X. & Xu X., 2006
"Futabasaurus": Lambert, 1990 [nomen nudum; this name now belongs to a plesiosaur (Sato, Hasegawa & Manabe, 2006)]
Futalognkosaurus: J.O. Calvo, Porfiri, B.J. González-Riga & A.W.A. Kellner, 2007

Gadolosaurus: Saito, 1979 [nomen nudum]
Gallimimus: H. Osmólska, Roniewicz & R. Barsbold, 1972
Galveosaurus: Sánchez-Hernández, 2005
Galvesaurus: J.L. Barco, J.I. Canudo, G. Cuenca-Bescós & J.I. Ruíz-Omeñaca, 2005 [JOS -> Galveosaurus]
Gansutitan: You H, Li D-Q, Zhou L. & Ji Q, 2008 [nomen nudum -> Daxiatitan]
Gargoyleosaurus: K. Carpenter, C.A. Miles & Cloward, 1998
Garudimimus: R. Barsbold, 1981
Gasosaurus: Dong Z-M, 1985
Gasparinisaura: R.A. Coria & L.J. Salgado, 1996
Gastonia: J.I. Kirkland, 1998
Gavinosaurus: Kelly, 1998 [nomen nudum -> Eotyrannus]
Geminiraptor: P. Senter, J.I. Kirkland, J. Bird & J.A. Bartlett, 2010
Genusaurus: Accarie, Beaudoin, Dejax, Fries, Michard & Taquet, 1995
Genyodectes: Woodward, 1901
Geranosaurus: R. Broom, 1911
Gigantoraptor: Xu X., Tan Q., Wang J., Zhao X. & Tan L., 2007
Giganotosaurus: R.A. Coria & L.J. Salgado, 1995
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: M.K. Brett-Surman, 1979
Ginnareemimus: Kaneko, 2000 [nomen nudum -> Kinnareemimus]
Giraffatitan: G.S. Paul, 1988
Glacialisaurus: N.D. Smith & D. Pol, 2007
Glishades: A. Prieto-Márquez, 2010
Glyptodontopelta: Ford, 2000
Gobiceratops: V.R. Alifanov, 2008
Gobisaurus: Vickaryous, A.P. Russell, P.J. Currie & Zhao X., 2001
Gobititan: You H, Tang F. & Luo, 2003
Godzillasaurus: Ikejiri, 2003 [nomen nudum; JOS –> Gojirasaurus (misspelled)]
Gojirasaurus: K. Carpenter, 1997
Gondwanatitan: A.W.A. Kellner & Azevedo, 1999
Gongbusaurus: Dong Z-M, Zhou S. & Zhang Y.H., 1983
Gongxianosaurus: He X., Wang C., Liu S., Zhou F., Liu T., Cai & Dai, 1998
Gorgosaurus: Lambe, 1914 [PSS -> Albertosaurus]
Goyocephale: A. Perle, T. Maryanska & H. Osmólska, 1982
Graciliceratops: P.C. Sereno, 2000
Graciliraptor: Xu X. & Wang X-L, 2004
Gravisaurus: Chabli vide D.B. Norman, 1989 [nomen nudum -> Lurdusaurus]
Gravitholus: Wall & P.M. Galton, 1979 [nomen dubium]
Gresslyosaurus: L. Rütimeyer, 1856 [PSS -> Plateosaurus]
"Gripposaurus": P.M. Barrett, P. Upchurch, Zhou X. & Wang X., 2007 [nomen nudum]
Gryphognathus: M.J. Ryan, D.C. Evans, P.J. Currie, C.M. Brown & D. Brinkman, 2011 [2012]
Gryponyx: R. Broom, 1911 [JSS -> Massospondylus]
Gryposaurus: Lambe, 1914
Guaibasaurus: J.F. Bonaparte, Ferigolo & A. Ribeiro, 1999
Guanlong: Xu X., J.M. Clark, C.A. Forster, M.A. Norell, G.M. Erickson, Eberth, Jia C. & Zhao Q., 2006
Gyposaurus: R. Broom, 1911 [JSS -> Massospondylus]

"Hadrosauravus": Lambert, 1990 [nomen nudum -> Gryposaurus]
Hadrosaurus: J. Leidy, 1859 [nomen dubium]
Hagryphus: L.E. Zanno & 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
Haplocheirus: J.N. Choiniere, Xu X., J.M. Clark, C.A. Forster, Guo Y. & Han F., 2010
Harpymimus: R. Barsbold & A. Perle, 1984
Haya: P.J. Makovicky, B.M. Kilbourne, R.W. Sadleir & M.A. Norell, 2011
Hecatasaurus: B. Brown, 1910 [JOS -> Telmatosaurus]
Heilongjiangosaurus: Li W. & Jin J., 2001 [nomen nudum]
Heishansaurus: Bohlin, 1953 [nomen dubium]
Helioceratops: Jin L., Chen J., Zan S. & P. Godefroit, 2009
Helopus: Wiman, 1929 / J.G. Wagler, 1832 -> Euhelopus
Heptasteornis: Harrison & C.A. Walker, 1975 [nomen dubium; PSS -> Elopteryx]
Herrerasaurus: Reig, 1963
Hesperonychus: N.R. Longrich & P.J. Currie, 2009
Hesperosaurus: K. Carpenter, C.A. Miles & Cloward, 2001
Heterodontosaurus: Crompton & A.J. Charig, 1962
Heterosaurus: Cornuel, 1850 [JSS -> Iguanodon]
Hexinlusaurus: P.M. Barrett, R.J. Butler & F. Knoll, 2005
Heyuannia: Lü, 2003
Hierosaurus: Wieland, 1909
Hikanodon: W.M. Keferstein, 1834 [JOS -> Iguanodon]
Hippodraco: A.T. McDonald, J.I. Kirkland, D.D. DeBlieux, S.K. Madsen, J. Cavin, A.R.C. Milner & L. Panzarin, 2010
"Hironosaurus": Hisa, 1988 [nomen nudum]
"Hisanohamasaurus": Lambert, 1990 [nomen nudum]
Histriasaurus: Dalla Vecchia, 1998
Homalocephale: T. Maryanska & H. Osmólska, 1974
Honghesaurus: [Anonymous], 1981 [nomen nudum -> Yandusaurus]
Hongshanosaurus: You H, Xu X. & Wang X-L, 2003
Hoplitosaurus: F.A. Lucas, 1902
Hoplosaurus: H.G. Seeley, 1881 [nomen dubium; PSS -> Struthiosaurus]
Hortalotarsus: H.G. Seeley, 1894 [JSS -> Massospondylus]
Huabeisaurus: Pang & Cheng Z., 2000
Huanghetitan: You H, Li D-Q, Zhou L. & Ji Q, 2006
Huaxiagnathus: Hwang, M.A. Norell, Ji Q. & Gao K-Q, 2004
Huaxiaosaurus: Zhao X, Wang K. & Li D-J, 2011
"Huaxiasaurus": Rey, 2002 [nomen nudum -> Huaxiagnathus]
Huayangosaurus: Dong Z-M, Tang Z. & Zhou S., 1982
Hudiesaurus: Dong Z-M, 1997
Hulsanpes: H. Osmólska, 1982
Hungarosaurus: Ösi A., 2005
Hylaeosaurus: G. Mantell, 1833
Hylosaurus: L.J. Fitzinger, 1840 [JOS -> Hylaeosaurus]
Hypacrosaurus: B. Brown, 1913
Hypselosaurus: Matheron, 1869
Hypselospinus: D.B. Norman, 2010
Hypsibema: E.D. Cope, 1869 [nomen dubium]
Hypsilophodon: T.H. Huxley, 1869
Hypsirophus: E.D. Cope, 1878 [nomen dubium; PSS -> Stegosaurus]

"Ichabodcraniosaurus": Novacek, 1996 [nomen nudum]
Ignavusaurus: F. Knoll, 2010 [PSS -> Massospondylus]
Iguanacolossus: A.T. McDonald, J.I. Kirkland, D.D. DeBlieux, S.K. Madsen, J. Cavin, A.R.C. Milner & L. Panzarin, 2010
Iguanodon: G. Mantell, 1825
"Iguanoides": Conybeare vide Cadbury, 2000 [nomen nudum –> Iguanodon]
Iguanosaurus: [Anonymous], 1824 [nomen nudum -> Iguanodon]
Iliosuchus: F. von Huene, 1932
Ilokelesia: R.A. Coria & L.J. Salgado,2000 (not 1998)
Incisivosaurus: Xu X., Cheng Y., Wang X-L & Chang C., 2002 [PSS -> Protarchaeopteryx]
Indosaurus: F. von Huene & Matley, 1933
Indosuchus: F. von Huene & Matley, 1933
Ingenia: R. Barsbold, 1981 / Gerlach, 1957 (replacement name not yet published)
Inosaurus: de Lapparent, 1960 [nomen dubium]
Irritator: Martill, Cruickshank, Frey, Small & M. Clarke, 1996
Isanosaurus: E. Buffetaut, V. Suteethorn, Cuny, Tong, LeLoeuff, Khansubha & Jongautchariyakul, 2000
Ischisaurus: Reig, 1963 [JSS -> Herrerasaurus]
Ischyrosaurus: J.W. Hulke, 1874 vide R. Lydekker, 1888 / E.D. Cope, 1869
Isisaurus: J.A. Wilson & P. Upchurch, 2003
"Issasaurus": G. Maier, 2003 [nomen nudum -> Dicraeosaurus]
Itemirus: Kurzanov, 1976
Iuticosaurus: LeLoeuff, 1993 [nomen dubium]

Jainosaurus: Hunt, Lockley, S.G. Lucas & C. Meyer, 1995 (not 1994) [nomen dubium; PSS -> Titanosaurus]
Jaklapallisaurus: F.E. Novas, M.D. Ezcurra, S. Chatterjee & T.S. Kutty, 2011
Janenschia: Wild, 1991
Jaxartosaurus: Riabinin, 1937 [nomen dubium]
Jeholornis: Zhou Z. & Zhang F., 2002 [JSS -> Shenzhouraptor; possible bird]
Jeholosaurus: Xu X., Wang X-L & You H, 2000
Jenghizkhan: G. Olshevsky vide G. Olshevsky, Ford & Yamamoto, 1995 [JSS -> Tarbosaurus]
Jensenosaurus: G. Olshevsky vide B.D. Curtice, K. Stadtman & L.J. Curtice, 1996 [nomen nudum -> Ultrasauros; JSS -> Supersaurus]
Jeyawati: A.T. McDonald, D.G. Wolfe & J.I. Kirkland, 2010
"Jiangjunmiaosaurus": [Anonymous], 1987 [nomen nudum -> Monolophosaurus & Sinraptor]
Jiangjunosaurus: Jia C., C.A. Forster (as Foster), Xu X. & J.M. Clark, 2007
Jiangshanosaurus: Tang F., Kang, Jin X., Wei & Wu W.T., 2001
Jinfengopteryx: Ji Q., Ji S., Lü, You H, Chen W., Liu Y.Q. & Liu Y.X., 2005
Jingshanosaurus: Zhang Y.H. & Yang Z.L., 1995
Jintasaurus: You H-L & Li D-Q, 2009
Jinzhousaurus: Wang X-L & Xu X., 2001
Jiutaisaurus: Wu W.H., Dong Z-M, Sun, Li C. & Li T., 2006
Jixiangornis: Ji Q., Ji S., Zhang H., You H, Zhang J.P., Wang L., Yuan & Ji X., 2002 [possible bird]
Jobaria: P.C. Sereno, Beck, D.B. Dutheil, H.C.E. Larsson, Lyon, Moussa, R.W. Sadleir, Sidor, D.J. Varricchio, G.P. Wilson & J.A. Wilson, 1999
Jubbulpuria: F. von Huene & Matley, 1933 [nomen dubium]
"Jurassosaurus": Dong Z-M vide Holden, 1992 [nomen nudum -> Tianchisaurus]
Juravenator: Göhlich & L.M. Chiappe, 2006

"Kagasaurus": Hisa, 1988 [nomen nudum]
Kaijiangosaurus: He X., 1984
Kakuru: Molnar & Pledge, 1980
Kangnasaurus: Haughton, 1915
Karongasaurus: Gomani, 2005 [electronically published]
"Katsuyamasaurus": Lambert, 1990 [nomen nudum -> Fukuiraptor]
Kayentavenator: R. Gay, 2010
Kelmayisaurus: Dong Z-M, 1973
Kemkemia: A. Cau & S. Maganuco, 2009
Kentrosaurus: Hennig, 1915 / Lambe, 1904 -> Kentrurosaurus & Doryphorosaurus
Kentrurosaurus: Hennig, 1916 [JOS -> Kentrosaurus]
Kerberosaurus: Y.L. Bolotsky & P. Godefroit, 2004
Khaan: J.M. Clark, M.A. Norell & R. Barsbold, 2001
Khetranisaurus: M.S. Malkani, 2006
Kileskus: A.O. Averianov, S.A. Krasnolutskii & S.V. Ivantsov, 2010
Kinnareemimus: E. Buffetaut, V. Suteethorn & H. Tong, 2009
"Kitadanisaurus": Lambert, 1990 [nomen nudum]
Kittysaurus: Hargreaves, 2001 [nomen nudum -> Eotyrannus]
Klamelisaurus: Zhao X., 1993
Kol: A.H. Turner, S.J. Nesbitt & M.A. Norell, 2009
Koparion: D. Chure, 1994
Koreaceratops: Lee Y-N, M.J. Ryan & Y. Kobayashi, 2010
Koreanosaurus: H.M. Kim, 1979 [nomen nudum]
Koreanosaurus: Huh, Lee D-G, J.K. Kim, Lim & P. Godefroit, 2010
Kosmoceratops: S.D. Sampson, M.A. Loewen, A.A. Farke, E.M. Roberts, C.A. Forster, J.A. Smith & A.L. Titus, 2010
Kotasaurus: Yadagiri, 1988
Koutalisaurus: Prieto-Márquez, Gaete, Rivas, Galobart & Boada, 2006 [PSS -> Pararhabdodon]
Kritosaurus: B. Brown, 1910 [nomen dubium; PSS -> Anasazisaurus, Gryposaurus, and/or Naashoibitosaurus]
Kryptops: P.C. Sereno & S.L. Brusatte, 2008
Kukufeldia: A.T. McDonald, P.M. Barrett & S.D. Chapman, 2010
Kulceratops: Nessov, 1995
Kunmingosaurus: Zhao X. (as Chao S.), 1985

Labocania: Molnar, 1974
Labrosaurus: O.C. Marsh, 1879 [JSS -> Allosaurus]
Laelaps: E.D. Cope, 1866 / Koch, 1836 -> Drytosaurus
Laevisuchus: F. von Huene & Matley, 1933 [nomen dubium]
Lagerpeton: Romer, 1971
Lagosuchus: Romer, 1971 [nomen dubium]
Lamaceratops: V.R. Alifanov, 2003
Lambeosaurus: Parks, 1923
Lametasaurus: Matley, 1923 [nomen dubium]
Lamplughsaura: T.S. Kutty, S. Chatterjee, P.M. Galton & P. Upchurch, 2007
Lanasaurus: Gow, 1975
Lancangosaurus: Zhao X. vide Dong Z-M, Zhou S. & Zhang Y.H., 1983 [nomen nudum -> Datousaurus]
Lancanjiangosaurus: Zhao X., 1983 [nomen nudum]
Lanzhousaurus: You H, Ji Q & Li D-Q, 2005
Laosaurus: O.C. Marsh, 1878 [nomen dubium]
Laplatasaurus: F. von Huene, 1929
Lapparentosaurus: J.F. Bonaparte, 1986
Leaellynasaura: T. Rich & Vickers-Rich (as P. Rich), 1989
Leipsanosaurus: F. Nopcsa, 1918 [PSS -> Struthiosaurus]
Lengosaurus: Kelly, 1998 [nomen nudum -> Eotyrannus]
Leonerasaurus: D. Pol, A.C. Garrido & I.A. Cerda, 2011
Leptoceratops: B. Brown, 1914
Leptospondylus: R. Owen, 1854 [JSS -> Massospondylus]
Leshansaurus: Li F., Peng G., Ye Y., Jiang S. & Huang D., 2009
Lesothosaurus: P.M. Galton, 1978 [PSS -> Fabrosaurus]
Lessemsaurus: J.F. Bonaparte, 1999
Levnesovia: H-D Sues & A. Averianov, 2009
Lewisuchus: Romer, 1972
Lexovisaurus: Hoffstetter, 1957
Leyesaurus: C. Apaldetti, R.N. Martinez, O.A. Alcober & D. Pol, 2011
Liaoceratops: Xu X., P.J. Makovicky, Wang X-L, M.A. Norell & You H, 2002
Liaoningosaurus: Xu X., Wang X-L & You H, 2001
Liassaurus: Welles, H.P. Powell & Pickering vide Pickering, 1995 [nomen nudum]
Ligabueino: J.F. Bonaparte, 1996
Ligabuesaurus: J.F. Bonaparte, B.J. González-Riga (as González Riga) & Apesteguía, 2006
"Ligomasaurus": G. Maier, 2003 [nomen nudum -> Giraffatitan]
Liliensternus: Welles, 1984
Limaysaurus: L.J. Salgado, A.C. Garrido, S.E. Cocca & J.R. Cocca, 2004
Limnosaurus: F. Nopcsa, 1899 / O.C. Marsh, 1872 -> Telmatosaurus & Hecatasaurus
Limusaurus: Xu X, J.M. Clark, J. Mo, J.N. Choiniere, C.A. Forster, G.M. Erickson, D.W.E. Hone, C. Sullivan, D.A. Eberth, S.J. Nesbitt, Zhao Q., R. Hernandez, Jia C-K, Han F-L, & Guo Y., 2009
Linhenykus: Xing X, C. Sullivan, M. Pittman, J.N. Choiniere, D.W.E. Hone, P. Upchurch, Tan Q, Xiao D, Tan L, & Han F, 2011
Linheraptor: Xu X, J.N. Choinere, M. Pittman, Tan Q., Xiao D., Li Z-Q, Tan L., J.M. Clark, M.A. Norell, D.W.E. Hone, & C. Sullivan, 2010
Linhevenator: Xu X, Tan Q, C. Sullivan, Han F. & Xiao D, 2011
Lirainosaurus: J.L. Sanz, J.E. Powell, Le Loeuff, R.D. Martínez & X. Pereda-Suberbiola, 1999
Liubangosaurus: Mo J, Xu X. & E. Buffetaut, 2010
Loncosaurus: F. Ameghino, 1898 [nomen dubium]
Longosaurus: Welles, 1984 [JSS -> Coelophysis]
Lophorhothon: W.R. Langston, 1960
Lophostropheus: M.D. Ezcurra & Cuny, 2007
Loricatosaurus: S. Maidment, D.B. Norman, P.M. Barrett & P. Upchurch, 2008
Loricosaurus: F. von Huene, 1929
Losillasaurus: Casanovas-Cladellas (as Casanovas), Santafe & J.L. Sanz, 2001
Lourinhanosaurus: O. Mateus, 1998
Lourinhasaurus: P. Dantas, J.L. Sanz, C.M. da Silva, F. Ortega, V.F. Dos Santos & M. Cachao, 1998
Luanchuanraptor: Lü, Xu L., Zhang X.L., Ji Q., Jia S., Hu W., Zhang J.M. & 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. & Ji Q., 2009
Luoyangosaurus: Lü, 2009 [nomen nudum -> Luoyanggia]
Lurdusaurus: Taquet & D.A. Russell, 1999
Lusitanosaurus: de Lapparent & Zbyszewski, 1957
Lusotitan: Telles Antunes & O. Mateus, 2003
Lycorhinus: Haughton, 1924

Machairasaurus: N.R. Longrich, P.J. Currie & Dong Z-M, 2010
Macrodontophion: A. Zborzewski, 1834 [nomen dubium]
Macrogryphosaurus: J.O. Calvo, Porfiri & F.E. Novas, 2007
Macrophalangia: C.M. Sternberg, 1932 [JSS -> Chirostenotes]
Macrurosaurus: H.G. Seeley, 1876
"Madsenius": Lambert, 1990 [nomen nudum -> Allosaurus]
Magnirostris: You H & Dong Z-M, 2003
Magnosaurus: F. von Huene, 1932
Magulodon: Kranz, 1996 [nomen nudum]
Magyarosaurus: F. von Huene, 1932
Mahakala: A.H. Turner, D. Pol, J.A. Clarke, G.M. Erickson & M.A. Norell, 2007
Maiasaura: J.R. Horner & Makela, 1979
Majungasaurus: Lavocat, 1955
Majungatholus: H-D Sues & Taquet, 1979 [JSS -> Majungasaurus]
Malarguesaurus: B.J. González-Riga, Previtera & Pirrone, 2009
Malawisaurus: L.L. Jacobs, Winkler, W.R. Downs & Gomani, 1993
Maleevosaurus: K. Carpenter, 1992 [JSS -> Tarbosaurus]
Maleevus: Tumanova, 1987
Mamenchisaurus: Yang Z.J. (as Young C.C.), 1954
Mandschurosaurus: Riabinin, 1930 [nomen dubium; PSS ->Amurosaurus or Charonosaurus]
Manidens: D. Pol, O.W.M. Rauhut & M. Becerra, 2011
Manospondylus: E.D. Cope, 1892 [nomen dubium; PSS -> Tyrannosaurus]
Mantellisaurus: G.S. Paul, 2006
Mapusaurus: R.A. Coria & P.J. Currie, 2006
Marasuchus: P.C. Sereno & A.B. Arcucci, 1994
Marisaurus: M.S. Malkani, 2006
Marmarospondylus: R. Owen, 1875 [nomen dubium]
Marshosaurus: J.H. Madsen, 1976
Masiakasaurus: S.D. Sampson, Carrano & C.A. Forster, 2001
Massospondylus: R. Owen, 1854
Maxakalisaurus: A.W.A. Kellner, D. Campos, Azevedo, Trotta, Henriques, Craik & H.P. Silva, 2006
Medusaceratops: M.J. Ryan, A.P. Russell & Hartman, 2010
Megacervixosaurus: Zhao X., 1983 [nomen nudum]
Megadactylus: E. Hitchcock, 1865 / L.J. Fitzinger, 1843 -> Amphisaurus
"Megadontosaurus": B. Brown vide J.H. Ostrom, 1970 [nomen nudum -> Deinonychus & Microvenator]
Megalosaurus: W. Buckland, 1824
Megapnosaurus: Ivie, Slipinski & Wegrzynowicz, 2001 [JSS -> Coelophysis]
Megaraptor: F.E. Novas, 1998
Mei: Xu X., & M.A. Norell, 2004
Melanorosaurus: Haughton, 1924
Mendozasaurus: B.J. González-Riga (as González Riga), 2003
Merosaurus: Welles, H.P. Powell & Pickering vide Pickering, 1995 [nomen nudum]
Metriacanthosaurus: A.D. Walker, 1964
Microcephale: P.C. Sereno, 1997 [nomen nudum]
Microceratops: Bohlin, 1953 / Seyrig, 1952 -> Microceratus
Microceratus: O. 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. & Wang X-L, 2000
Microsaurops: Kuhn, 1963 [JOS -> Microcoelus]
Microvenator: J.H. Ostrom, 1970
"Mifunesaurus": Hisa, 1985 [nomen nudum]
Minmi: Molnar, 1980
Minotaurasaurus: C.A. Miles & C.J. Miles, 2009
Miragaia: O. Mateus, S. Maidment & N.A. Christiansen, 2009
Mirischia: Naish, Martill & Frey, 2004
Moabosaurus: B.B. 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]
Mojoceratops: N.R. Longrich, 2010 [PSS -> Eoceratops]
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. & P.J. Currie, 1994 (not 1993)
Mononychus: A. Perle, M.A. Norell, L.M. Chiappe & J.M. Clark, 1993 / Schueppel, 1824 -> Mononykus
Mononykus: A. Perle, M.A. Norell, L.M. Chiappe & J.M. Clark, 1993
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]
"Mtotosaurus": G. Maier, 2003 [nomen nudum -> Dicraeosaurus]
Mussaurus: J.F. Bonaparte & Vince, 1979
Muttaburrasaurus: Bartholomai & Molnar, 1981
Muyelensaurus: J.O. Calvo, B.J. González-Riga & Porfiri, 2007
Mymoorapelta: J.I. Kirkland & K. Carpenter, 1994

Naashoibitosaurus: Hunt & S.G. Lucas, 1993 [PSS -> Gryposaurus or Kritosaurus]
Nambalia: F.E. Novas, M.D. Ezcurra, S. Chatterjee & T.S. Kutty, 2011
Nanningosaurus: Mo, Zhao Z., Wang W. & Xu X., 2007
Nanosaurus: O.C. Marsh, 1877
Nanotyrannus: R.T. Bakker, Williams & P.J. Currie, 1988 [PSS -> Tyrannosaurus]
Nanshiungosaurus: Dong Z-M, 1979
Nanyangosaurus: Xu X., Zhao X., Lü, Huang W., Li Z-Y & Dong Z-M, 2000
Narambuenatitan: L.S. Filippi, R.A. García & A.C. Garrido, 2010
Nasutuceratops: E.K. Lund, 2010 [nomen ex dissertatione]
Nectosaurus: Versluys, 1910 / Merriam, 1905 -> Kritosaurus
Nedcolbertia: J.I. Kirkland, B.B. Britt, Whittle, S.K. Madsen & Burge, 1998
Nedoceratops: Ukrainsky, 2007 [PSS -> Triceratops]
Neimongosaurus: Zhang X.H., Xu X., Zhao X., P.C. Sereno, Kuang & Tan L., 2001
Nemegtia: Lü, Tomida, Y. Azuma, Dong Z-M & Lee Y-N, 2004 / Szczechura, 1978 -> Nemegtomaia
Nemegtomaia: Lü, Tomida, Y. Azuma, Dong Z-M & Lee Y-N, 2005
Nemegtosaurus: Nowinski, 1971
Neosaurus: Gilmore vide Gilmore & Stewart, 1945 / F. Nopcsa, 1923 -> Parrosaurus
Neosodon: M. de la Moussaye, 1885
Neovenator: Hutt, Martill & Barker, 1996
Neuquenraptor: F.E. Novas & D. Pol, 2005 [PSS -> Unenlagia]
Neuquensaurus: J.E. Powell, 1992
Newtonsaurus: Welles vide Welles & Pickering, 1999 [nomen nudum]
Ngexisaurus: Zhao X., 1983 [nomen nudum]
Nigersaurus: P.C. Sereno, Beck, D.B. Dutheil, H.C.E. Larsson, Lyon, Moussa, R.W. Sadleir, Sidor, D.J. Varricchio, G.P. Wilson & J.A. Wilson, 1999
Niobrarasaurus: K. Carpenter, Dilkes & D.B. Weishampel, 1995
Nipponosaurus: Nagao, 1936
Noasaurus: J.F. Bonaparte & J.E. Powell, 1980
Nodocephalosaurus: R. Sullivan, 1999
Nodosaurus: O.C. Marsh, 1889
Nomingia: R. Barsbold, H. Osmólska, Watabe, P.J. Currie & Tsogtbaatar, 2000
Nopcsaspondylus: Apesteguía, 2007
Nothronychus: J.I. Kirkland & Wolfe, 2001
Notoceratops: Tapia, 1918 [nomen dubium]
Notohypsilophodon: R.D. Martínez, 1998
Nqwebasaurus: de Klerk, Foster, S.D. Sampson, Chinsamy & Ross, 2000
"Nteregosaurus": G. Maier, 2003 [nomen nudum -> Janenschia]
Nuoersaurus: Dong Z-M & Li X.M., 1991 [nomen nudum; later spelled Nuoerosaurus & Nurosaurus but neither formally described nor named]
Nuthetes: R. Owen, 1854
"Nyororosaurus": G. Maier, 2003 [nomen nudum -> Dicraeosaurus]

Ohmdenosaurus: Wild, 1978
Ojoceratops: R. Sullivan & S.G. Lucas, 2010
Ojoraptorsaurus: R.M. Sullivan, S.E. Jasinski & M.P.A. Van Tomme, 2011
Oligosaurus: H.G. Seeley, 1881 [nomen dubium; PSS -> Rhabdodon]
Olorotitan: P. Godefroit, Y.L. Bolotsky & V.R. Alifanov, 2003
Omeisaurus: Yang Z.J. (as Young C.C.), 1939
Omnivoropteryx: Czerkas & 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, M.D. Ezcurra & Lecuona, 2008
Ornatotholus: P.M. Galton & H-D Sues, 1983 [JSS -> Stegoceras]
Ornithodesmus: H.G. Seeley, 1887
Ornithoides: H.F. Osborn, 1924 [nomen nudum -> Saurornithoides]
Ornitholestes: H.F. Osborn, 1903
Ornithomerus: H.G. Seeley, 1881 [JSS -> Rhabdodon]
Ornithomimoides: F. von Huene & 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: J.R. Horner & D.B. 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: D.J. Varricchio, A.J. Martin & Katsura, 2007
Oshanosaurus: Zhao X. (as Chao S.), 1985 [nomen nudum]
Osmakasaurus: A.T. McDonald, 2011
Othnielia: P.M. Galton, 1977
Othnielosaurus: P.M. Galton, 2006
Otogosaurus: Zhao X. & Tan L., 2004 [citation not seen, author's name(s) may change]
Ouranosaurus: Taquet, 1976
Oviraptor: H.F. Osborn, 1924
Ovoraptor: H.F. Osborn, 1924 [nomen nudum -> Velociraptor]
Owenodon: P.M. Galton, 2009
Oxalaia: A.W.A. Kellner, Azevedo, Machado, L.B. de Carvalho & Henriques, 2011
Ozraptor: J.A. Long & Molnar, 1998

Pachycephalosaurus: B. Brown & Schlaikjer, 1943
Pachyrhinosaurus: C.M. Sternberg, 1950
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: M.S. Malkani, 2006
Palaeopteryx: Jensen, 1981
Palaeoscincus: J. Leidy, 1856 [nomen dubium; PSS -> Edmontonia or Panoplosaurus]
Paludititan: Z. Csiki, V. Codrea, C. Jipa-Murzea & P. Godefroit, 2010
Paluxysaurus: Rose, 2007 [electronically published]
Pampadromaeus: S.F. Cabreira, C.L. Schultz, J.S. Bittencourt, M.B. Soares, D.C. Fortier, L.R. Silva & M.C. Langer, 2011
Pamparaptor: J.D. Porfiri, J.O. Calvo & D. Dos Santos, 2011
Panamericansaurus: J.O. Calvo & J.D. Porfiri, 2010
Panoplosaurus: Lambe, 1919
Panphagia: R.N. Martínez & O.A. Alcober, 2009
Pantydraco: P.M. Galton, A.M. Yates & D. Kermack, 2007
Paraiguanodon: B. Brown vide G. Olshevsky, 1991 [nomen nudum -> Bactrosaurus]
Paralititan: J.B. Smith, M.C. Lamanna, K.J. Lacovara, P. Dodson, J.R. Smith, J.C. Poole, R. Giegengack & Attia, 2001
Paranthodon: F. Nopcsa, 1929
Pararhabdodon: Casanovas-Cladellas, Santafé-Llopis & Isidro-Llorens, 1993
Parasaurolophus: Parks, 1922
Parksosaurus: C.M. Sternberg, 1937
Paronychodon: E.D. Cope, 1876 [nomen dubium]
Parrosaurus: Gilmore, 1945 [nomen dubium; PSS -> Hypsibema]
Parvicursor: Karhu & Rautian, 1996
Patagonykus: F.E. Novas, 1996
Patagosaurus: J.F. Bonaparte, 1979
Pawpawsaurus: Lee Y-N, 1996
Pectinodon: K. Carpenter, 1982
Pedopenna: Xu X. & Zhang F., 2005
Peishansaurus: Bohlin, 1953 [nomen dubium]
Pelecanimimus: Perez-Moreno, J.L. Sanz, Buscalioni, Moratalla, F. Ortega & Rasskin-Gutman, 1994
Pellegrinisaurus: L.J. Salgado, 1996
Peloroplites: K. Carpenter, J.A. Bartlett, J. Bird & Barrick, 2008
Pelorosaurus: G. Mantell, 1850
Peltosaurus: B. Brown vide D. Chure & McIntosh, 1989 (see also Glut, 1972) / E.D. Cope, 1873 -> Sauropelta
Penelopognathus: P. Godefroit, Li H. & Shang, 2005
Pentaceratops: H.F. Osborn, 1923
Petrobrasaurus: L.S. Filippi, J.I. Canudo, L.J. Salgado, A.C. Garrido, R.A. García, I.A. Cerda & A. Otero, 2011
Phaedrolosaurus: Dong Z-M, 1973
Phuwiangosaurus: V. Martin, E. Buffetaut & V. Suteethorn, 1994
Phyllodon: Thulborn, 1973
Piatnitzkysaurus: J.F. Bonaparte, 1979
Pinacosaurus: Gilmore, 1933
Pisanosaurus: Casamiquela, 1967
Pitekunsaurus: L.S. Filippi & A.C. Garrido, 2008
Piveteausaurus: Taquet & Welles, 1977
Planicoxa: DiCroce & K. Carpenter, 2001
Plateosauravus: F. von Huene, 1932 [JSS -> Euskelosaurus]
Plateosaurus: von Meyer, 1837
Platyceratops: V.R. Alifanov, 2003
Pleurocoelus: O.C. Marsh, 1888
Pleuropeltus: H.G. Seeley, 1881 [nomen dubium; PSS -> Struthiosaurus]
Pneumatoraptor: Ösi A., Apesteguía & Kowalewski, 2010
Podischion: B. Brown & Kaisen, 1911 vide Dingus & M.A. Norell, 2010
Podokesaurus: Talbot, 1911 [JSS -> Coelophysis]
Poekilopleuron: J.A. Eudes-Deslongchamps, 1838
Polacanthoides: F. Nopcsa, 1928 [PSS -> Hylaeosaurus]
Polacanthus: R. Owen vide [Anonymous], 1865
Polyodontosaurus: Gilmore, 1932 [JSS -> Troödon]
Polyonax: E.D. Cope, 1874 [JSS -> Triceratops]
Ponerosteus: G. Olshevsky, 2000 [nomen dubium]
Pradhania: T.S. Kutty, S. Chatterjee, P.M. Galton & P. Upchurch, 2007
Prenocephale: T. Maryanska & H. Osmólska, 1974
Prenoceratops: Chinnery, 2004
Priconodon: O.C. Marsh, 1888 [nomen dubium]
Priodontognathus: H.G. Seeley, 1875 [nomen dubium]
Probactrosaurus: Rozhdestvensky, 1966
"Probarodiplodocus": Fuller, 2009 [nomen nudum]
Proceratops: Lull, 1906 [JOS -> Ceratops]
Proceratosaurus: F. von Huene, 1926
Procerosaurus: Fritsch, 1905 / F. von Huene, 1902 -> Ponerosteus
Procheneosaurus: Matthew, 1920 [JSS -> Lambeosaurus]
Procompsognathus: E. Fraas, 1913
Prodeinodon: H.F. Osborn, 1924 [nomen dubium]
Proiguanodon: van den Broeck, 1900 [nomen nudum -> Iguanodon]
Propanoplosaurus: R. Stanford, D.B. Weishampel & V.B. Deleon, 2011
Proplanicoxa: K. Carpenter & Y. Ishida, 2010 [PSS -> Mantellisaurus]
Prosaurolophus: B. Brown, 1916
Protarchaeopteryx: Ji Q. & Ji S., 1997
Protiguanodon: H.F. Osborn, 1923 [JSS -> Psittacosaurus]
Protoavis: S. Chatterjee, 1991
Protoceratops: Granger & Gregory, 1923
Protognathosaurus: G. 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: F. Knoll, 1999
Pseudolagosuchus: A.B. Arcucci, 1987
Psittacosaurus: H.F. Osborn, 1923
Pteropelyx: E.D. Cope, 1889 [nomen dubium]
Pterospondylus: Jaekel, 1913 [PSS -> Procompsognathus]
Puertasaurus: F.E. Novas, L.J. Salgado, J.O. Calvo & F.L. Agnolin, 2005
Pukyongosaurus: Dong Z-M, Paik & H.J. Kim, 2001
Pycnonemosaurus: A.W.A. Kellner & D. Campos, 2002
Pyroraptor: Allain & Taquet, 2000

Qantassaurus: T. Rich & Vickers-Rich, 1999
Qiaowanlong: You H-L & Li D-Q, 2009
Qingxiusaurus: Mo, Huang C., Zhao Z., Wang W. & Xu X., 2008
Qinlingosaurus: Xue, Zhang Y.X., Bi, Yue & Chen D., 1996
Qiupalong: Xu L, Y. Kobayashi, Lü J, Lee Y-N, Liu Y-Q, Tanaka, Zhang X-L, Jia S. & Zhang J-M, 2011
Quaesitosaurus: Bannikov & Kurzanov vide Kurzanov & Bannikov, 1983
Quilmesaurus: R.A. Coria, 2001

Rahiolisaurus: F.E. Novas, S. Chatterjee, D.K. Rudra & P.M. Datta, 2010
Rahona: C.A. Forster, S.D. Sampson, L.M. Chiappe & D.W. Krause, 1998 / Griveaud, 1975 -> Rahonavis
Rahonavis: C.A. Forster, S.D. Sampson, L.M. Chiappe & D.W. Krause, 1998
Rajasaurus: J.A. Wilson, P.C. Sereno, S. Srivastava, D.K. Bhatt, A. Khosla & A. Sahni, 2003
Rapator: F. von Huene, 1932 [nomen dubium]
Rapetosaurus: Rogers & C.A. Forster, 2001
Ratchasimasaurus: M. Shibata, P. Jintasakul & Y. Azuma, 2011
Raptorex: P.C. Sereno, Tan L., S.L. Brusatte, H.J. Kriegstein, Zhao X. & K. Cloward, 2009
Rayososaurus: J.F. Bonaparte, 1996
Razanandrongobe: Maganuco, Dal Sasso & Pasini, 2006 (possible crocodylomorph or theropod)
Rebbachisaurus: Lavocat, 1954
Regnosaurus: G. Mantell, 1848
Revueltoraptor: Hunt, 1994 vide S.J. Nesbitt, Irmis & 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
Ricardoestesia: P.J. Currie, K.J. Rigby & R.E. Sloan, 1990
Rileya: F. von Huene, 1902 / W.H. Ashmead, 1888 -> Rileyasuchus [nomen dubium]
Rileyasuchus: Kuhn, 1961 [nomen dubium]
Rinchenia: R. Barsbold, 1997 vide H. Osmólska, P.J. Currie & R. Barsbold, 2004
Rinconsaurus: J.O. Calvo & B.J. González-Riga (as González Riga), 2003
Rioarribasaurus: Hunt & S.G. Lucas, 1991 [nomen rejectum -> Coelophysis]
Riojasaurus: J.F. Bonaparte, 1969
Rocasaurus: L.J. Salgado & Azpilicueta, 2000
Roccosaurus: van Heerden vide Anderson & Cruickshank, 1978 [nomen nudum -> Melanorosaurus]
Rubeosaurus: A.T. McDonald & J.R. Horner, 2010
Ruehleia: P.M. Galton, 2001
Rugops: P.C. Sereno, J.A. Wilson & Conrad, 2004
Rutellum: E. Lhuyd, 1699 [nomen oblitum; pre-Linnaean name: cf. Delair & Sarjeant, 2002]
Ruyangosaurus: Lü J., Xu L., Jia S., Zhang X.L., Zhang J.M., Yang L., You H. & Ji Q., 2009

Sacisaurus: Ferigolo & Langer, 2006
Sahaliyania: P. Godefroit, Hai, Yu T. & Lauters, 2008
Saichania: T. Maryanska, 1977
"Salimosaurus": G. Maier, 2003 [nomen nudum -> Giraffatitan]
Saltasaurus: J.F. Bonaparte & J.E. Powell, 1980
Saltopus: F. von Huene, 1910
"Saltriosaurus": Dal Sasso, 2000 [nomen nudum]
"Sanchusaurus": Hisa, 1985 [nomen nudum -> Gallimimus]
Sangonghesaurus: Zhao X., 1983 [nomen nudum -> Tianchisaurus]
Sanjuansaurus: O.A. Alcober & R.N. Martínez, 2010
Sanpasaurus: Yang Z.J. (as Young C.C.), 1944 [nomen dubium]
Santanaraptor: A.W.A. Kellner, 1999
Sarahsaurus: T.B. Rowe, H-D Sues & R.R. Reisz, 2010
Sarcolestes: R. Lydekker, 1893
Sarcosaurus: Andrews, 1921
Saturnalia: Langer, Abdala, Richter & Benton, 1998
Sauraechmodon: H. Falconer, 1861 [nomen nudum -> Echinodon]
Saurolophus: B. Brown, 1912
Sauropelta: J.H. Ostrom, 1970
Saurophaganax: D. Chure, 1995
Saurophagus: J.W. Stovall vide Ray, 1941 / W.J. Swainson 1831
Sauroplites: Bohlin, 1953 [nomen dubium]
Sauroposeidon: Wedel, Cifelli & Sanders, 2000
Saurornithoides: H.F. Osborn, 1924
Saurornitholestes: H-D Sues, 1978
Scansoriopteryx: Czerkas & Yuan, 2002
Scelidosaurus: R. Owen, 1859
Scipionyx: Dal Sasso & Signore, 1998
Scolosaurus: F. Nopcsa, 1928
Scrotum: Brookes, 1763 [nomen oblitum; PSS -> Megalosaurus]
Scutellosaurus: Colbert, 1981
Secernosaurus: M.K. Brett-Surman, 1979
Segisaurus: Camp, 1936
Segnosaurus: A. Perle, 1979
Seismosaurus: Gillette, 1991
Seitaad: J.W.W. Sertich & M. Loewen, 2010
"Selimanosaurus": G. Maier, 2003 [nomen nudum -> Dicraeosaurus]
Sellacoxa: K. Carpenter & Y. Ishida, 2010
Sellosaurus: F. von Huene, 1908
Serendipaceratops: T. Rich & Vickers-Rich, 2003
Shamosaurus: Tumanova, 1983
Shanag: A.H. Turner, Hwang & M.A. Norell, 2007
Shanshanosaurus: Dong Z-M, 1977 [JSS -> Tarbosaurus]
Shantungosaurus: Hu C., 1973
Shanxia: P.M. Barrett, You H, P. Upchurch & Burton, 1998
Shanyangosaurus: Xue, Zhang Y.H., Bi, Yue & Chen D., 1996
Shaochilong: S.L. Brusatte, R.B.J. Benson, D. Chure, Xu X., C. Sullivan, & D.W.E. Hone, 2009
Shenzhouraptor: Ji Q., Ji S., You H, Zhang J.P., Yuan, Ji X., Li J.L. & Li Y.X., 2002 [possible bird]
Shenzhousaurus: Ji Q., M.A. Norell, P.J. Makovicky, Gao K-Q, Ji S. & Yuan, 2003
Shidaisaurus: Wu X., P.J. Currie, Dong Z-M, Pan S. & Wang T., 2009
Shixinggia: Lü & Zhang B., 2005
Shuangmiaosaurus: You H, Ji Q., Li J.L. & Li Y.X., 2003
Shunosaurus: Dong Z-M, Zhou S. & Zhang Y.H., 1983
Shuvuuia: L.M. Chiappe, M.A. Norell & J.M. Clark, 1998
Siamodon: E. Buffetaut & V. Suteethorn, 2011
Siamosaurus: E. Buffetaut & Ingavat, 1986
Siamotyrannus: E. Buffetaut, V. Suteethorn & 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 & Zhou Z., 2008
Sinocalliopteryx: Ji S., Ji Q., Lü & Yuan, 2007
Sinoceratops: Xu X, Wang K, Zhao X & Li D-J, 2010
Sinocoelurus: Yang Z.J. (as Young C.C.), 1942
Sinornithoides: D.A. Russell & Dong Z-M, 1994 (not 1993)
Sinornithomimus: Y. Kobayashi & Lü, 2003
Sinornithosaurus: Xu X., Wang X-L & Wu X., 1999
Sinosauropteryx: Ji Q. & Ji S., 1996
Sinosaurus: Yang Z.J. (as Young C.C.), 1948
Sinotyrannus: Ji Q., Ji S-A & Zhang L-J, 2009
Sinovenator: Xu X., M.A. Norell, Wang X-L, P.J. Makovicky & Wu X., 2002
Sinraptor: P.J. Currie & Zhao X., 1994 (not 1993)
Sinucerasaurus: Xu X. & Wang X-L, 2004 vide Xu X. & M.A. Norell, 2006 [JOS -> Sinusonasus]
Sinusonasus: Xu X. & Wang X-L, 2004
Skorpiovenator: Canale, Scanferla, F.L. Agnolin & F.E. Novas, 2009
Sonidosaurus: Xu X., Zhang X.H., Tan Q., Zhao X. & Tan L., 2006
Sonorasaurus: Ratkevich, 1998
Sphaerotholus: T.E. Williamson & T.D. 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, L.M. Chiappe, P. Dantas, F. Escaso, Gasulla, López, Pomares, B. Ribeiro, J.L. Sanz, Tent-Manclús, Faust, H. Joger, J. Joger, Krüger, Mudroch, Rabe, Ritter, Sommer, O.A. Ide & A. Maga, 2009
Spinops: A.A. Farke, M.J. Ryan, P.M. Barrett, D.H. Tanke, D.R. Braman, M.A. Loewen & M.R. Graham, 2011
Spinosaurus: E. Stromer, 1915
Spinostropheus: P.C. Sereno, J.A. Wilson & Conrad, 2004
Staurikosaurus: Colbert, 1970
Stegoceras: Lambe, 1902
Stegopelta: Williston, 1905 [PSS -> Nodosaurus]
Stegosaurides: Bohlin, 1953 [nomen dubium]
Stegosaurus: O.C. Marsh, 1877
Stenonychosaurus: C.M. Sternberg, 1932 [JSS -> Troödon]
Stenopelix: H. von Meyer, 1857
Stenotholus: Giffin, Gabriel & 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: R.J. Butler, 2005
Strenusaurus: J.F. Bonaparte, 1969 [JSS -> Riojasaurus]
Streptospondylus: H. von Meyer, 1830 [nomen dubium]
Struthiomimus: H.F. Osborn, 1916
Struthiosaurus: E. Bunzel, 1870
Stygimoloch: P.M. Galton & H-D Sues, 1983 [PSS - > Pachycephalosaurus]
Stygivenator: G. Olshevsky vide G. Olshevsky, Ford & Yamamoto, 1995 [JSS -> Tyrannosaurus]
Styracosaurus: Lambe, 1913
Suchomimus: P.C. Sereno, Beck, D.B. Dutheil, Gado, H.C.E. Larsson, Lyon, Marcot, O.W.M. Rauhut, R.W. Sadleir, Sidor, D.J. Varricchio, G.P. Wilson & J.A. Wilson, 1998
Suchosaurus: R. Owen, 1841 [nomen dubium; PSS ->Baryonyx]
"Sugiyamasaurus": Lambert, 1990 [nomen nudum]
Sulaimanisaurus: M.S. Malkani, 2006
Supersaurus: Jensen, 1985
Suuwassea: Harris & P. Dodson, 2004
Suzhousaurus: Li D-Q, Peng C, You H, M.C. Lamanna, Harris, K.J. Lacovara & 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: D. Chure, 2001 [nomen ex dissertatione]
Szechuanosaurus: Yang Z.J. (as Young C.C.), 1942 [nomen dubium]

Talarurus: Maleev, 1952
Talenkauen: F.E. Novas, Cambiaso & Ambrosio, 2004
Talos: L.E. Zanno, D.J. Varricchio, P.M. O'Connor, A.L. Titus & M.J. Knell, 2011
Tangvayosaurus: Allain, Taquet, Battail, Dejax, Richir, Veran, Limon-Duparcmeur, Vacant, O. Mateus, Sayarath, Khenthavong & Phouyavong, 1999
Tanius: Wiman, 1929
Tanycolagreus: K. Carpenter, C.A. Miles & Cloward, 2005
Tanystrosuchus: Kuhn, 1963 [nomen dubium; PSS -> Halticosaurus or Liliensternus]
Tapuiasaurus: H. Zaher, D. Pol, A.B. Carvalho, P.M. Nascimento, C. Riccomini, P. Larson, R.D. Juárez-Valieri, R. Pires-Domingues, N.J. da Silva Jr & D. Campos, 2011
Tarascosaurus: Le Loeuff & E. Buffetaut, 1991
Tarbosaurus: Maleev, 1955
Tarchia: T. Maryanska, 1977
Tastavinsaurus: J.I. Canudo, R. Royo-Torres & Cuenca-Bescós, 2008
Tatankacephalus: W.L. Parsons & K.M. Parsons, 2009
Tatankaceratops: Ott & P. Larson, 2010
Tatisaurus: Simmons, 1965
Taveirosaurus: Telles Antunes & Sigogneau-Russell, 1991
Tawa: S.J. Nesbitt, N.D. Smith, R.B. Irmis, A.H. Turner, A. Downs & 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 & Taquet, 2004
Technosaurus: S. Chatterjee, 1984
Tehuelchesaurus: T. Rich, Vickers-Rich, Gimenez, Cúneo, Puerta & Vacca, 1999
Teinurosaurus: F. Nopcsa, 1928 vide F. Nopcsa, 1929 [nomen dubium]
Telmatosaurus: F. Nopcsa, 1903
Tenantosaurus: B. Brown vide D. Chure & McIntosh, 1989 [nomen nudum -> Tenontosaurus]
Tendaguria: J.F. Bonaparte, Heinrich & Wild, 2000
Tenontosaurus: J.H. Ostrom, 1970
Teratophoneus: T.D. Carr, T.E. Williamson, B.B. Britt & K. Stadtman, 2011
Tethyshadros: F.M. Dalla Vecchia, 2009
Tetragonosaurus: Parks, 1931 [nomen rejectum -> Procheneosaurus]
Texacephale: N.R. Longrich, J. Sankey, & D. Tanke, 2010
Texasetes: Coombs, 1995
Teyuwasu: Kischlat, 1999
Thecocoelurus: F. von Huene, 1923 [nomen dubium]
Thecodontosaurus: Riley & Stutchbury, 1836
Thecospondylus: H.G. Seeley, 1882 [nomen dubium]
Theiophytalia: Brill & K. Carpenter, 2006
Therizinosaurus: Maleev, 1954
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. & Dong Z-M, 2009
Tianyuraptor: Zheng X.T., Xu X., You H.L., Zhao Q., & Dong Z-M, 2009
Tianzhenosaurus: Pang & Cheng Z., 1998
Tichosteus: E.D. Cope, 1877 [nomen dubium]
Tienshanosaurus: Yang Z.J. (as Young C.C.), 1937
Timimus: T. Rich & Vickers-Rich, 1994
Titanoceratops: N.R. Longrich, 2011 [PSS -> Pentaceratops]
Titanosaurus: R. Lydekker, 1877 [nomen dubium]
Titanosaurus: O.C. Marsh, 1877 / R. Lydekker, 1877 -> Atlantosaurus [nomen dubium]
Tochisaurus: Kurzanov & H. Osmólska, 1991
Tomodon: J. Leidy, 1865 / A. Duméril 1853 -> Diplotomodon
Tonganosaurus: Li K, Yang C-Y, Liu J. & Wang Z-X, 2010
Tonouchisaurus: R. Barsbold, 1994 [nomen nudum]
Torilion: K. Carpenter & Y. Ishida, 2010 [JOS -> Barilium]
Tornieria: Sternfeld, 1911
Torosaurus: O.C. Marsh, 1891 [PSS -> Triceratops]
Torvosaurus: P.M. Galton & Jensen, 1979
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.)
Traukutitan: R.D. Juárez-Valieri & J.O. Calvo, 2011
Triceratops: O.C. Marsh, 1889
Trigonosaurus: D. Campos, A.W.A. Kellner, Bertini & R.A. Santucci, 2005
Trimucrodon: Thulborn, 1973
Troödon: J. Leidy, 1856
Tsaagan: M.A. Norell, J.M. Clark, A.H. Turner, P.J. Makovicky, R. Barsbold & T. Rowe, 2006
Tsagantegia: Tumanova, 1993
Tsintaosaurus: Yang Z.J. (as Young C.C.), 1958
Tugulusaurus: Dong Z-M, 1973
Tuojiangosaurus: Dong Z-M, Li X.M., Zhou S. & Zhang Y.H., 1977
Turanoceratops: Nessov & Kaznyshkina vide Nessov, Kaznyshkina & Cherepanov, 1989
Turiasaurus: R. Royo-Torres, A. Cobos & L. Alcalá, 2006
Tylocephale: T. Maryanska & H. Osmólska, 1974
Tylosteus: J. Leidy, 1872 [nomen oblitum; SSS -> Pachycephalosaurus]
Tyrannosaurus: H.F. Osborn, 1905
Tyrannotitan: F.E. Novas, S. de Valai, P. Vickers-Rich & T. Rich, 2005
Tyreophorus: F. von Huene, 1929 [nomen nudum]

Uberabatitan: L.J. Salgado & A.B. Carvalho, 2008
Udanoceratops: Kurzanov, 1992
Ugrosaurus: Cobabe & Fastovsky, 1987 [JSS -> Triceratops]
Uintasaurus: Holland, 1919 [JSS -> Camarasaurus]
Ultrasauros: Jensen vide G. Olshevsky, 1991 [JSS -> Supersaurus]
Ultrasaurus: H.M. Kim, 1983 [nomen dubium]
Ultrasaurus: Jensen, 1985 / H.M. Kim, 1983 -> Ultrasauros
Umarsaurus: T. Maryanska & H. Osmólska, 1981 vide G. Olshevsky, 1992 [nomen nudum -> Barsdoldia]
Unaysaurus: Leal, Azevedo, A.W.A. Kellner & Da Rosa, 2004
Unenlagia: Nova & Puerta, 1997
Unescoceratops: M.J. Ryan, D.C. Evans, P.J. Currie, C.M. Brown & D. Brinkman, 2011 [2012]
Unquillosaurus: J.E. Powell, 1979
Urbacodon: A. Averianov & H-D Sues, 2007
Utahceratops: S.D. Sampson, M.A. Loewen, A.A. Farke, E.M. Roberts, C.A. Forster, J.A. Smith & A.L. Titus, 2010
Utahraptor: J.I. Kirkland, Burge & Gaston, 1993
Uteodon: A.T. McDonald, 2011

Vagaceratops: S.D. Sampson, M.A. Loewen, A.A. Farke, E.M. Roberts, C.A. Forster, J.A. Smith & A.L. Titus, 2010
Valdoraptor: G. Olshevsky, 1991
Valdosaurus: P.M. Galton, 1977
Variraptor: Le Loeuff & E. Buffetaut, 1998
Vectensia: Delair, 1982 [nomen nudum -> Hylaeosaurus]
Vectisaurus: J.W. Hulke, 1879 [JSS -> Iguanodon]
Velafrons: Gates, S.D. Sampson, Delgado deJesús, L.E. Zanno, Eberth, Hernandez-Rivera, Aguilló Martínez & J.I. Kirkland, 2007
Velocipes: F. von Huene, 1932 [nomen dubium]
Velociraptor: H.F. Osborn, 1924
Velocisaurus: J.F. Bonaparte, 1991
Venenosaurus: Tidwell, K. Carpenter & S. Meyer, 2001
Veterupristisaurus: O.W.M. Rauhut, 2011
Vitakridrinda: M.S. Malkani, 2006
Volkheimeria: J.F. Bonaparte, 1979
Vulcanodon: Raath, 1972

Wadhurstia: K. Carpenter & Y. Ishida, 2010 [JOS -> Hypselospinus]
Wakinosaurus: Okazaki, 1992
Walgettosuchus: F. von Huene, 1932
Walkeria: S. Chatterjee, 1987 / J. Fleming, 1823 -> Alwalkeria
Walkersaurus: Welles, H.P. Powell & Pickering vide Pickering, 1995 [nomen nudum -> Duriavenator]
"Wangonisaurus": G. Maier, 2003 [nomen nudum -> Giraffatitan]
Wannanosaurus: Hou, 1977
Willinakaqe: R.D. Juárez-Valieri, J.A. Haro, L.E. Fiorelli & J.O. Calvo, 2011
Wintonotitan: S.A. Hocknull, M.A. White, T.R. Tischler, A.G. Cook, N.D. Calleja, T. Sloan, D.A. Elliott, 2009
Wuerhosaurus: Dong Z-M, 1973
Wulagasaurus: P. Godefroit, Hai, Yu T. & Lauters, 2008
Wyomingraptor: [Anonymous], 1997 [nomen nudum -> Allosaurus]

Xenoposeidon: Taylor & Naish, 2007
Xenotarsosaurus: R.D. Martínez, Gimenez, Rodriguez & Bochatey, 1986
Xianshanosaurus: Lü J.C., Xu L., Jiang X., Jia S., Li M., Yuan, Zhang X.L. & Ji Q., 2009
Xiaosaurus: Dong Z-M & Tang Z., 1983
Xiaotingia: Xu X, You H, Du K. & Han F, 2011
Xinghesaurus: Hasegawa, K. Carpenter, M.C. Lamanna & Xu X., 2009 [nomen nudum; in Japanese guidebook "Dinosaur Expo 2009: The Miracle of Deserts"]
Xinjianogovenator: O.W.M. Rauhut & Xu X., 2005
Xiongguanlong: Li D-Q, M.A. Norell, Gao K-Q, N.D. Smith & P.J. Makovicky, 2009
Xixianykus: Xu X., Wang D-Y, C. Sullivan, D.W.E. Hone, Han F-L, Yan R-H, & Du F-M, 2010
Xixiasaurus: Lü J-C, Xu L, Liu Y-Q, Zhang X-L, Jia S. & Ji Q., 2010
Xixiposaurus: Sekiya T, 2010
Xuanhanosaurus: Dong Z-M, 1984
Xuanhuaceratops: Zhao X., Cheng Z., Xu X. & P.J. Makovicky, 2006
Xuanhuasaurus: Zhao X. (as Chao S.), 1985 [nomen nudum -> Xuanhuaceratops]
Xuwulong: You H, Li D-Q & Liu W, 2011

Yaleosaurus: F. von Huene, 1932 [JSS -> Anchisaurus]
Yamaceratops: P.J. Makovicky & M.A. Norell, 2006
Yandusaurus: He X., 1979
Yangchuanosaurus: Dong Z-M, Chang Y.H. (as Chang Y.), Li X.M. & Zhou S., 1978
Yaverlandia: P.M. Galton, 1971
Yibinosaurus: Ouyang H., 2001
Yimenosaurus: Bai vide Bai, Yang J. & Wang G-H, 1990
Yingshanosaurus: Zhou S., 1984 [nomen nudum]
Yinlong: Xu X., C.A. Forster, J.M. Clark & Mo, 2006
Yixianosaurus: Xu X. & Wang X-L, 2003
Yizhousaurus: S. Chatterjee, Wang T, Pan S-G, Dong Z-M, Wu X-C & P. Upchurch, 2010 [nomen nudum; in abstract]
Yuanmousaurus: Lü, Li S., Ji Q., Wang G-F, Zhang J.H. & Dong Z-M, 2006
Yubasaurus: He X., 1975 ? [nomen nudum -> Yandusaurus]
Yueosaurus: Zheng W, Jin X, Shibata, Y. Azuma & Yu F, 2011
Yunnanosaurus: Yang Z.J. (as Young C.C.), 1942
Yunxiansaurus: Zhou S., 2005 [nomen nudum]

Zalmoxes: D.B. Weishampel, Jianu, Z. Csiki & D.B. Norman, 2003
Zanabazar: M.A. Norell, P.J. Makovicky, G.S. Bever, A.M. Balanoff, J.M. Clark, R. Barsbold & T. Rowe, 2009
Zapalasaurus: L.J. Salgado, A.B. Carvalho & A.C. Garrido, 2006
Zapsalis: E.D. Cope, 1876 [nomen dubium]
Zephyrosaurus: H-D Sues, 1980
Zhejiangosaurus: Lü , Jin X, Sheng, Li Y.H, Wang G-P & Y. Azuma, 2007
Zhongyuansaurus: Xu L, Lü, Zhang X.L, Jia S, Hu W, Zhang J.M, Wu Y. & Ji Q, 2007
Zhuchengceratops: Xu X, Wang K, Zhao X, C. Sullivan & Chen S, 2010
Zhuchengosaurus: Zhao X, Li D-J, Han G, Zhao H, Liu F, Li L. & Fang X, 2007 [PSS -> Shantungosaurus]
Zhuchengtyrannus: D.W.E. Hone, Wang K, C. Sullivan, Zhao X, Chen S, Li D, Ji S, Ji Q & Xu X, 2011
Zigongosaurus: Hou, Chao & Chu, 1976 [JSS -> Mamenchisaurus]
Zizhongosaurus: Dong Z-M, Zhou S. & Zhang Y.H., 1983
Zuniceratops: Wolfe & J.I. Kirkland, 1998
Zuolong: J.N. Choiniere, J.M. Clark, C.A. Forster & Xu X, 2010
Zupaysaurus: A.B. Arcucci & R.A. Coria, 2003

not presently considered to be dinosaurian (*)

Aachenosaurus: G. Smets, 1888 * [nomen dubium; petrified wood]
Actiosaurus: H.E. Sauvage, 1882 * [nomen dubium; probably ichthyosaur]
Aggiosaurus: Ambayrac, 1913 * [metriorhychid crocodilian]
Albisaurus: Fritsch, 1905 * [nomen dubium; possible marine reptile]
Ankistrodon: T.H. Huxley, 1865 * [proterosuchian archosaur]
Anthodon: R. Owen, 1876 * [pareiasaur]
Archaeopteryx: H. von Meyer, 1861 * [bird]
Archaeornis: Petronievics vide Petronievics & Woodward, 1917 * [nomen rejectum -> Archaeopteryx; bird]
Archaeovolans: Czerkas & Xu X., 2002 * [bird, originally part of Archaeoraptor specimen; PSS -> Yanornis]
Arctosaurus: Adams, 1875 * [nomen dubium; non-dinosaurian reptile
Arizonasaurus: Welles, 1947 * [ctenosauriscid rauisuchian]
Avalonia: H.G. Seeley, 1898 / C.D. Walcott, 1889 * -> Avalonianus [non-dinosaurian anchosaur]
Avalonianus: Kuhn, 1961 * [nomen dubium; non-dinosaurian archosaur]
Avisaurus: M.K. Brett-Surman & G.S. Paul, 1985 * [enantiornithan bird]
Azendohsaurus: Dutuit, 1972 * [non-dinosaurian archosaur]
Basutodon: F. von Huene, 1932 * [nomen dubium; non-dinosaurian archosaur]
Bathygnathus: J. Leidy, 1854 * [nomen dubium; pelycosaur]
Belodon: H. von Meyer, 1842 * [phytosaur]
Brachytaenius: H. von Meyer, 1842 * [nomen dubium; non-dinosaurian reptile]
Brasileosaurus: F. von Huene, 1931 * [non-dinosaurian archosaur]
Centemodon: Lea, 1856 * [nomen dubium; phytosaur]
Chienkosaurus: Yang Z.J. (as Young C.C.), 1942 * [nomen dubium; crocodilian]
Cladeiodon: R. Owen, 1841 * [nomen dubium; non-dinosaurian archosaur]
Clarencea: Brink, 1959 * [sphenosuchian archosaur]
Clepsysaurus: I. Lea, 1851 * [phytosaur]
Coelurosauravus: Piveteau, 1926 * [gliding prolacertiform reptile]
Colonosaurus: O.C. Marsh, 1872 * [ichthyornithid bird, probably Ichthyornis]
Crosbysaurus: Heckert, 2004 * [non-dinosaurian archosaur]
Cystosaurus: Geoffroy Saint-Hilaire, 1833 * [nomen oblitum; probable teleosaurid crocodyliform]
Dakosaurus: F.A. Quenstedt, 1856 * [crocodilian]
Dasygnathoides: Kuhn, 1961 * [ornithosuchid archosaur, JSS -> Ornithosuchus]
Dasygnathus: T.H. Huxley, 1877 / MacLeay, 1819 * -> Dasygnathoides [ornithosuchid archosaur]
Deuterosaurus: Eichwald, 1860 * [therapsid]
Dianchungosaurus: Yang Z.J. (as Young C.C.), 1982 * [crocodilian]
Doratodon: H.G. Seeley, 1881 * [crocodilian]
Elachistosuchus: Janensch, 1949 * [rhynchocephalian]
Elopteryx: Andrews, 1913 * [nomen dubium; probable bird, possible troödontid dinosaur]
Ephoenosaurus: [Anonymous], 1839 * [nomen nudum; PSS -> Machimosaurus; crocodilian]
Epicampodon: R. Lydekker, 1885 * [PSS -> Ankistrodon; proterosuchid archosaur]
Eupodosaurus: G.A. Boulenger, 1891 * [nomen dubium; probable marine reptile]
Eurolimnornis: Kessler & Jurcsak, 1986 * [probable bird]
"Futabasaurus": Lambert, 1990 [nomen nudum; this name now belongs to a plesiosaur (Sato, Hasegawa & Manabe, 2006)]
Galesaurus: R. Owen, 1859 * [therapsid]
Galtonia: Huber, S.G. Lucas & Hunt, 1993 * [non-dinosaurian archosaur; PSS -> Revueltosaurus]
Gobipteryx: Elzanowski, 1974 * [enantiornithan bird]
Gracilisuchus: Romer, 1972 * [non-dinosaurian archosaur]
Griphornis: R. Owen vide Woodward, 1862 * [nomen rejectum -> Archaeopteryx; bird]
Griphosaurus: J.A. Wagner, 1861 * [nomen rejectum -> Archaeopteryx; bird]
Gwyneddosaurus: Bock, 1945 * [PSS -> Tanytrachelos (prolacertiform)]
Hallopus: O.C. Marsh, 1881 * [crocodilian]
Herbstosaurus: Casamiquela, 1974 * [pterosaur]
Hypselorhachis: A.J. Charig, 1967 vide R.J. Butler, P.M. Barrett, R.L. Abel & D.J. Gower, 2009 * [ctenosauriscid archosaur]
Jurapteryx: Howgate, 1985 * [PSS -> Archaeopteryx; bird]
Krzyzanowskisaurus: Heckert, 2005 * [non-dinosaurian archosaur; PSS -> Revueltosaurus]
Kuszholia: Nessov, 1992 * [bird]
Laornis: O.C. Marsh, 1870 * [bird]
Libycosaurus: Bonarelli, 1947 * [anthracothere mammal]
Likhoelesaurus: Ellenberger, 1970 * [nomen nudum; non-dinosaurian archosaur]
Limnornis: Kessler & Jurcsak, 1984 / Gould, 1839 * -> Eurolimnornis & Palaeocursornis [probable bird]
Lisboasaurus: Seiffert, 1973 * [crocodilian]
Longisquama: Sharov, 1970 * [gliding reptile]
Lucianosaurus: Hunt & S.G. Lucas, 1994 * [non-dinosaurian archosaur]
Macelognathus: O.C. Marsh, 1884 * [crocodilian]
Macroscelosaurus: Muenster vide von Meyer, 1847 * [nomen nudum -> likely Tanystropheus; prolacertiform reptile]
Nyasasaurus: A.J. Charig, 1967 * [nomen nudum; non-dinosaurian archosaur]
Ornithosuchus: Newton, 1894 * [ornithosuchid archosaur]
Palaeoctonus: E.D. Cope, 1877 * [nomen dubium; phytosaur]
Palaeocursornis: Kessler & Jurcsak, 1986 * [probable bird]
Palaeolimnornis: Jurcsak & Kessler, 1985 * [nomen nudum -> Palaeocursornis; probable bird]
Palaeosauriscus: Kuhn, 1959 * [JOS -> Paleosaurus; non-dinosaurian archosaur]
Palaeosaurus: L.J. Fitzinger, 1840 / Geoffroy Saint-Hilare, 1833 * -> Sphenosaurus [procolophonid]
Palaeosaurus: Riley & Stutchbury, 1836 / Geoffroy Saint-Hilaire, 1833 * -> Paleosaurus [non-dinosaurian archosaur]
Paleosaurus: Riley & Stutchbury, 1840 * [nomen dubium; non-dinosaurian archosaur]
Pareiasaurus: R. Owen, 1876 * [non-dinosaurian reptile]
Patricosaurus: H.G. Seeley, 1887 * [lepidosaur / archosaur chimera]
Pekinosaurus: Hunt & S.G. Lucas, 1994 * [non-dinosaurian archosaur; PSS -> Revueltosaurus]
Picrodon: H.G. Seeley, 1898 * [nomen dubium; PSS -> Avalonianus; non-dinosaurian archosaur]
Pneumatoarthrus: E.D. Cope, 1870 * [nomen dubium; turtle]
Poposaurus: Mehl, 1915 * [non-dinosaurian archosaur]
Postosuchus: S. Chatterjee, 1985 * [rauisuchian archosaur]
Procerosaurus: F. von Huene, 1902 * [prolacertiform reptile; PSS -> Tanystropheus]
Protecovasaurus: Heckert, 2004 * [non-dinosaurian archosaur]
Protorosaurus: H. von Meyer, 1830 * [non-dinosaurian reptile]
Rachitrema: H.E. Sauvage, 1882 * [nomen dubium; probably ichthyosaur]
Revueltosaurus: Hunt, 1989 * [non-dinosaurian archosaur]
Rhopalodon: Fischer von Waldheim, 1841 * [therapsid]
Riojasuchus: J.F. Bonaparte, 1969 * [ornithosuchid archosaur]
Scaphonyx: Woodward, 1908 * [rhynchosaur]
Scleromochlus: Woodward, 1907 * [non-dinosaurian archosaur]
Shuvosaurus: S. Chatterjee, 1993 * [crocodilian]
Smilodon: F. Plieninger, 1846 / P.W. Lund, 1842 * -> Zanclodon [non-dinosaurian archosaur]
Sphenosaurus: H. von Meyer, 1847 * [procolophonid]
Spinosuchus: F. von Huene, 1932 * [non-dinosaurian reptile]
Spondylosoma: F. von Huene, 1942 * [rauisuchid]
Squalodon: Grateloup, 1840 * [cetacean]
Stereosaurus: H.G. Seeley, 1869 * [nomen nudum; probably plesiosaur]
Succinodon: F. von Huene, 1941 * [mollusk borings]
Suchoprion: E.D. Cope, 1877 * [nomen dubium; phytosaur]
Tanystropheus: H. von Meyer, 1855 * [prolacertiform reptile]
Tapinocephalus: R. Owen, 1876 * [therapsid]
Tecovasaurus: Hunt & S.G. Lucas, 1994 * [non-dinosaurian archsaur]
Teleocrater: A.J. Charig, 1956 [nomen nudum; non-dinosaurian archosaur] *
Teratosaurus: H. von Meyer, 1861 * [teratosaurid archosaur]
Termatosaurus: H. von Meyer & F. Plieninger, 1844 * [nomen dubium; phytosaur]
Trialestes: J.F. Bonaparte, 1982 * [crocodilian]
Triassolestes: Reig, 1963 / Tillyard, 1918 * -> Trialestes [crocodilian]
Tribelesodon: F. Bassani, 1886 * [JSS –> Tanystropheus; prolacertiform reptile]
Unicerosaurus: Baugh vide Armstrong, 1987 * [nomen nudum; fish]
Venaticosuchus: J.F. Bonaparte, 1971 * [ornithosuchid archosaur]
Wellnhoferia: Elzanowski, 2001 * [bird]
Wyleyia: Harrison & C.A. Walker, 1973 * [enantiornithan bird]
Yezosaurus: Obata & Muramoto vide Muramoto, 1977 * [nomen nudum; PSS -> Moanasaurus (mosasaur)]
Zanclodon: F. Plieninger, 1846 * [nomen dubium; non-dinosaurian archosaur]
Zatomus: E.D. Cope, 1871 * [nomen dubium; non-dinosaurian archosaur]

Maintained by Robert Margulski; E-Mail your comments to: RLMargulski@verizon.net