List of dinosaur genera list of dinosaursgenera that have ever been included in the superorder Dinosauria, excluding most members of the clade Avialae and purely vernacular terms.junior synonyms of more established names, and genera that are no longer considered dinosaurs. Many listed names have been reclassified as everything from birds to crocodilians to petrified wood . The list contains 1630 names, of which approximately 1224 are considered either valid dinosaur genera or nomina dubia .Scope and terminology There is no official, canonical list of all non-avian dinosaur genera. The closest is the Dinosaur Genera Listbiological nomenclature expert George Olshevsky, which was first published online in 1995 and is regularly updated. The most authoritative general source in the field is the second edition of The Dinosauria . The vast majority of citations are based on Olshevsky's list, and all subjective determinations are based on The Dinosauria , except where they conflict with primary literature . These exceptions are noted.Naming conventions and terminology follow the International Code of Zoological Nomenclature . Technical terms used include: Junior synonym : A name which describes the same taxon as a previously published name. If two or more genera are formally designated and the type specimens are later assigned to the same genus, the first to be published is the senior synonym, and all other instances are junior synonyms. Senior synonyms are generally used, except by special decision of the ICZN, but junior synonyms cannot be used again, even if deprecated. Junior synonymy is often subjective, unless the genera described were both based on the same type specimen . Nomen nudum : A name that has appeared in print but has not yet been formally published by the standards of the ICZN. Nomina nuda are invalid, and are therefore not italicized as a proper generic name would be. If the name is later formally published, that name is no longer a nomen nudum and will be italicized on this list. Often, the formally published name will differ from any nomina nuda that describe the same specimen. Nomen oblitum : A name that has not been used in the scientific community for more than fifty years after its original proposal. Nomen manuscriptum : A name that appears in manuscript of a formal publication that has no scientific backing. Preoccupied name : A name that is formally published, but which has already been used for another taxon. This second use is invalid and the name must be replaced. Preoccupied names are not valid generic names. Nomen dubium : A name describing a fossil with no unique diagnostic features. As this can be an extremely subjective and controversial designation, no genera are marked as such on this list.A Aachenosaurus – a piece of petrified wood Aardonyx Abdallahsaurus – nomen nudum , probably Giraffatitan Abdarainurus Abelisaurus Abrictosaurus Abrosaurus Abydosaurus Acantholipan Acanthopholis Achelousaurus Acheroraptor Achillesaurus Achillobator Acristavus Acrocanthosaurus Acrotholus Actiosaurus – a choristoderan Adamantisaurus Adasaurus Adelolophus Adeopapposaurus Adratiklit Adynomosaurus Aegyptosaurus Aeolosaurus Aepisaurus Aepyornithomimus Aerosteon Aetonyx – possible junior synonym of Massospondylus Afromimus Afrovenator Agathaumas - possible synonym of Triceratops Aggiosaurus – a metriorhynchid crocodilian Agilisaurus Agnosphitys - a silesaurid dinosauromorph Agrosaurus – probably a junior synonym of Thecodontosaurus Agujaceratops Agustinia Ahshislepelta Airakoraptor - nomen nudum Ajancingenia - synonym of Heyuannia Ajkaceratops Akainacephalus Alamosaurus Alaskacephale Albalophosaurus Albertaceratops Albertadromeus Albertavenator Albertonykus Albertosaurus Albinykus .|alt= Albisaurus – a non-dinosaurian reptile Alcovasaurus – junior synonym of Eucnemesaurus - nomen nudum - junior synonym of Anchisaurus – nomen nudum; possibly Huabeisaurus – preoccupied name , now known as Anchisaurus – possibly Talarurus – junior synonym of Edmontosaurus – junior synonym of Edmontosaurus - nomen nudum – probable junior synonym of Irritator – nomen nudum – a proterosuchid archosauriform Ankylosaurus Anodontosaurus Anomalipes Anoplosaurus Anserimimus Antarctopelta Antarctosaurus Antetonitrus Anthodon – a pareiasaur Antrodemus – possibly a synonym of Allosaurus Anzu Aoniraptor Aorun Apatodon – possibly a junior synonym of Allosaurus Apatoraptor Apatosaurus Appalachiosaurus Aquilarhinus Aquilops Aragosaurus Aralosaurus Aratasaurus Araucanoraptor – nomen nudum ; Neuquenraptor Archaeoceratops Archaeodontosaurus Archaeopteryx Archaeoraptor – a chimaera of the bird Yanornis and the dromaeosaur Microraptor Archaeornis – junior synonym of Archaeopteryx Archaeornithoides Archaeornithomimus Arcovenator Arctosaurus - a non-dinosaurian reptile Arcusaurus Arenysaurus Argentinosaurus Argyrosaurus Aristosaurus – junior synonym of Massospondylus Aristosuchus Arizonasaurus – a rauisuchian Arkansaurus Arkharavia Arrhinoceratops Arstanosaurus Asfaltovenator Asiaceratops Asiamericana – a fish Asiatosaurus Astrodon . Astrodonius – junior synonym of Astrodon – junior synonym of Astrodon – preoccupied name, now known as Agustinia – preoccupied name, now known as Avalonianus – a non-dinosaurian archosaur Aviatyrannis – probably a non-dinosaurian dinosauromorph Avisaurus – an enantiornithine bird Azendohsaurus'' – a non-dinosaurian archosauromorph B Baalsaurus Bactrosaurus Bagaceratops Bagaraatan Bagualosaurus Bahariasaurus Bainoceratops Bajadasaurus Bakesaurus – nomen nudum Balaur Balochisaurus - nomen nudum Bambiraptor Banji Bannykus mounted in the American Museum of Natural History in New York City . Baotianmansaurus – nomen nudum, Datousaurus – a non-dinosaurian archosaur Bathygnathus – a pelycosaur , Dimetrodon – nomen nudum - junior synonym of Altispinax – nomen nudum Beipiaognathus - possibly a hoax Beipiaosaurus – a phytosaur Berberosaurus Bihariosaurus - possibly invalid – nomen nudum; Cedarpelta – nomen nudum, probably Giraffatitan – junior synonym of Camptosaurus Brachytaenius – a metriorhynchid; junior objective synonym of Dakosaurus Brachytrachelopan Bradycneme Brasileosaurus – a non-dinosaurian archosaur Brasilotitan Bravoceratops Breviceratops Brohisaurus Brontomerus Brontoraptor – nomen nudum , probably Torvosaurus Brontosaurus Bruhathkayosaurus Bugenasaura – junior synonym of Thescelosaurus Buitreraptor Burianosaurus Buriolestes Byranjaffia – nomen nudum ; Byronosaurus Byronosaurus C Caenagnathasia Caenagnathus Caihong Calamosaurus "Calamospondylus " – preoccupied name, now known as Calamosaurus Calamospondylus Callovosaurus Camarasaurus Camarillasaurus Camelotia Camposaurus "Camptonotus " – preoccupied name, now known as Camptosaurus Camptosaurus "Campylodon " – preoccupied name, now known as Campylodoniscus Campylodoniscus Canardia "Capitalsaurus" – nomen nudum Carcharodontosaurus Cardiodon Carnotaurus Caseosaurus Cathartesaura Cathetosaurus Caudipteryx Caudocoelus – junior synonym of Teinurosaurus Caulodon – junior synonym of Camarasaurus Cedarosaurus Cedarpelta Cedrorestes Centemodon – a phytosaur Centrosaurus Cerasinops Ceratonykus Ceratops Ceratosaurus Cetiosauriscus Cetiosaurus Changchunsaurus "Changdusaurus" – nomen nudum Changyuraptor Chaoyangsaurus Charonosaurus Chasmosaurus Chassternbergia – junior synonym of Edmontonia Chebsaurus Chenanisaurus Cheneosaurus – junior synonym of Hypacrosaurus . Chialingosaurus – possible junior synonym of Szechuanosaurus " " – nomen nudum; Sonorasaurus "Cinizasaurus" – – a non-dinosaurian rauisuchian Claorhynchus – possibly Triceratops – a sphenosuchian Clasmodosaurus – a phytosaur, Palaeosaurus " " – preoccupied Coeluroides – a primitive diapsid Coelurus " " – preoccupied name, now known as Coloradisaurus "Colossosaurus" – ; Pelorosaurus "Comanchesaurus" – Cleveland Museum of Natural History . Compsosuchus Concavenator Conchoraptor Condorraptor Convolosaurus Coronosaurus Corythoraptor Corythosaurus Craspedodon Crataeomus – junior synonym of Struthiosaurus Craterosaurus Creosaurus – junior synonym of Allosaurus Crichtonpelta Crichtonsaurus Cristatusaurus Crittendenceratops Crosbysaurus – a non-dinosaurian archosauriform Cruxicheiros Cryolophosaurus Cryptodraco – junior synonym of Cryptosaurus "Cryptoraptor" – nomen nudum Cryptosaurus Cryptovolans – junior synonym of Microraptor Cumnoria D Daanosaurus Dacentrurus "Dachongosaurus" – nomen nudum Daemonosaurus Dahalokely Dakosaurus – a metriorhynchid crocodilian Dakotadon Dakotaraptor Daliansaurus "Damalasaurus" – nomen nudum Dandakosaurus Danubiosaurus – junior synonym of Struthiosaurus "Daptosaurus" – nomen nudum ; early manuscript name for Deinonychus Darwinsaurus - junior synonym of Hypselospinus or Mantellisaurus Dashanpusaurus Daspletosaurus Dasygnathoides – a non-dinosaurian archosaur; possible junior synonym of Ornithosuchus "Dasygnathus " – preoccupied name, now known as Dasygnathoides Datanglong Datonglong Datousaurus Daurosaurus – synonym of Kulindadromeus Daxiatitan Deinocheirus Deinodon – possibly Gorgosaurus Deinonychus Delapparentia – junior synonym of Iguanodon Deltadromeus Demandasaurus Denversaurus Deuterosaurus – a therapsid Diabloceratops Diamantinasaurus Dianchungosaurus – a crocodilian "Diceratops " – preoccupied name, now known as Nedoceratops Diceratus – junior synonym of Nedoceratops Diclonius Dicraeosaurus Didanodon – synonym of Lambeosaurus ; possibly a nomen nudum Dilong Dilophosaurus Diluvicursor Dimodosaurus – junior synonym of Plateosaurus Dineobellator Dinheirosaurus – probable junior synonym of Supersaurus Dinodocus "Dinosaurus " – preoccupied name; now a junior synonym of Plateosaurus . Dinotyrannus – junior synonym of Tyrannosaurus – junior synonym of Stegosaurus – junior synonym of Mantellisaurus "Domeykosaurus" – , Atacamatitan – a crocodilian Doryphorosaurus – junior synonym of Kentrosaurus - possible junior synonym of Pachycephalosaurus – a plesiosaurian Dreadnoughtus - junior synonym of Nanosaurus - possible junior synonym of Ornithomimus – junior synonym of Massospondylus "Duranteceratops" - – junior synonym of Tyrannosaurus – junior synonym of Supersaurus''E Echinodon skeleton. Edmarka – junior synonym of Torvosaurus – a rhynchocephalian Elaltitan – junior synonym of Brontosaurus "Elvisaurus" – ; Cryolophosaurus – junior synonym of Brontosaurus – junior synonym of Chasmosaurus "Eohadrosaurus" – ; Eolambia - nomen nudum – may be Allosaurus "Ephoenosaurus" – nomen nudum ; Machimosaurus Epicampodon – a proterosuchid archosauriform, Ankistrodon Epichirostenotes Epidendrosaurus – synonym of Scansoriopteryx Epidexipteryx Equijubus Erectopus Erketu Erliansaurus Erlikosaurus Eshanosaurus "Euacanthus" – nomen nudum ; junior synonym of Polacanthus Eucamerotus Eucentrosaurus – junior synonym of Centrosaurus Eucercosaurus Eucnemesaurus Eucoelophysis – a silesaurid "Eugongbusaurus" – nomen nudum Euhelopus Euoplocephalus Eupodosaurus – a nothosaur synonymous with Lariosaurus "Eureodon" – nomen nudum ; Tenontosaurus Eurolimnornis – a pterosaur Euronychodon Europasaurus Europatitan Europelta Euskelosaurus Eustreptospondylus F Fabrosaurus – possibly Lesothosaurus Falcarius Fendusaurus - may be a nomen nudum "Fenestrosaurus" – nomen nudum ; Oviraptor Ferganasaurus Ferganastegos - nomen nudum Ferganocephale Ferrisaurus Foraminacephale Fosterovenator Fostoria Frenguellisaurus – junior synonym of Herrerasaurus . Fruitadens "Fusinasus" – ; Eotyrannus "Futabasaurus" – ; not to be confused with the formally named plesiosaur Futabasaurus G "Gadolosaurus" – nomen nudum Galeamopus Galesaurus – a therapsid Galleonosaurus Gallimimus Galtonia – a pseudosuchian; possibly a junior synonym of Revueltosaurus Galveosaurus – synonym of Galvesaurus Galvesaurus Gannansaurus "Gansutitan" - nomen nudum ; Daxiatitan Ganzhousaurus Gargoyleosaurus Garudimimus Gasosaurus Gasparinisaura Gastonia "Gavinosaurus" – nomen nudum ; Eotyrannus Geminiraptor Genusaurus Genyodectes Geranosaurus Gideonmantellia Giganotosaurus Gigantoraptor "Gigantosaurus " – preoccupied name, now known as Tornieria Gigantosaurus Gigantoscelus – junior synonym of Euskelosaurus Gigantspinosaurus Gilmoreosaurus "Ginnareemimus" – nomen nudum ; Kinnareemimus Giraffatitan Glacialisaurus Glishades Glyptodontopelta Gnathovorax . Gobiceratops "Godzillasaurus" – ; Gojirasaurus – a non-dinosaurian archosaur Gravitholus – junior synonym of Plateosaurus – junior synonym of Archaeopteryx – junior synonym of Archaeopteryx - nomen nudum – a tanystrophid Gyposaurus – junior synonym of Massospondylus''H "Hadrosauravus" – nomen nudum ; junior synonym of Gryposaurus Hadrosaurus Haestasaurus Hagryphus Hallopus – a crocodilian Halszkaraptor Halticosaurus Hanssuesia "Hanwulosaurus" – nomen nudum Haplocanthosaurus "Haplocanthus " – preoccupied name, now known as Haplocanthosaurus Haplocheirus Harpymimus Haya Hecatasaurus – junior synonym of Telmatosaurus "Heilongjiangosaurus" – nomen nudum Heishansaurus Helioceratops "Helopus " – preoccupied name, now known as Euhelopus Heptasteornis Herbstosaurus – a pterosaur Herrerasaurus Hesperonychus Hesperornithoides Hesperosaurus Heterodontosaurus Heterosaurus - possible senior synonym of Mantellisaurus Hexing Hexinlusaurus Heyuannia . Hierosaurus Hikanodon - junior synonym of Iguanodon Hippodraco "Hironosaurus" – nomen nudum "Hisanohamasaurus" – nomen nudum Histriasaurus Homalocephale "Honghesaurus" – nomen nudum ; Yandusaurus Hongshanosaurus – junior synonym of Psittacosaurus Hoplitosaurus Hoplosaurus – junior synonym of Struthiosaurus Horshamosaurus Hortalotarsus – possible junior synonym of Massospondylus Huabeisaurus Hualianceratops Huanansaurus Huanghetitan Huangshanlong Huaxiagnathus Huaxiaosaurus - junior synonym of Shantungosaurus "Huaxiasaurus" – nomen nudum ; Huaxiagnathus Huayangosaurus Hudiesaurus Huehuecanauhtlus Huinculsaurus Hulsanpes Hungarosaurus Huxleysaurus - junior synonym of Hypselospinus Hylaeosaurus Hylosaurus – junior synonym of Hylaeosaurus Hypacrosaurus Hypselorhachis – a ctenosauriscid Hypselosaurus Hypselospinus Hypsibema Hypsilophodon Hypsirhophus I "Ichabodcraniosaurus" – nomen nudum ; probably Velociraptor Ichthyovenator Ignavusaurus Iguanacolossus Iguanodon "Iguanoides" – nomen nudum ; Iguanodon mounted in a modern quadrupedal posture in the Royal Belgian Institute of Natural Sciences in Brussels. nomen nudum; Iguanodon " " – preoccupied name, now known as Heyuannia yanshini – junior synonym of Herrerasaurus " " – preoccupied name, has not yet been renamed Isisaurus "Issasaurus" – ; Dicraeosaurus J Jainosaurus Jaklapallisaurus Janenschia Jaxartosaurus Jeholosaurus Jenghizkhan – junior synonym of Tarbosaurus "Jensenosaurus" – nomen nudum ; Supersaurus Jeyawati Jianchangosaurus "Jiangjunmiaosaurus" – nomen nudum ; Monolophosaurus Jiangjunosaurus Jiangshanosaurus . Jiangxisaurus Jinbeisaurus – junior synonym of Archaeopteryx "Jurassosaurus" – ; Tianchisaurus K Kaatedocus "Kagasaurus" – nomen nudum Kaijiangosaurus Kaijutitan Kakuru Kamuysaurus Kangnasaurus Karongasaurus Katepensaurus "Katsuyamasaurus" – nomen nudum Kayentavenator Kazaklambia Kelmayisaurus Kemkemia - a crocodyliform Kentrosaurus Kentrurosaurus – junior synonym of Kentrosaurus Kerberosaurus skeleton. Khaan - nomen nudum "Kitadanisaurus" – ; Fukuiraptor "Kittysaurus" – ; Eotyrannus Kol "Koreanosaurus" – ; name later used formally for a genus of ornithopod Koshisaurus - junior synonym of Pararhabdodon – probably a pseudosuchian Kukufeldia - junior synonym of Barilium – synonym of Kulindadromeus "Kunmingosaurus" – L Labocania Labrosaurus – junior synonym of Allosaurus "Laelaps " – preoccupied name, now known as Dryptosaurus Laevisuchus Lagerpeton – a non-dinosaurian dinosauromorph Lagosuchus – a non-dinosaurian dinosauromorph Laiyangosaurus Lajasvenator Lamaceratops - possible junior synonym of Bagaceratops Lambeosaurus Lametasaurus Lamplughsaura Lanasaurus – junior synonym of Lycorhinus "Lancangosaurus" – variant spelling of "Lancanjiangosaurus" "Lancanjiangosaurus" – nomen nudum Lanzhousaurus Laosaurus Lapampasaurus Laplatasaurus Lapparentosaurus Laquintasaura Latenivenatrix Latirhinus Lavocatisaurus Leaellynasaura Ledumahadi Leinkupal Leipsanosaurus – junior synonym of Struthiosaurus "Lengosaurus" – nomen nudum ; Eotyrannus . Leonerasaurus — junior synonym of Kulindadromeus – junior synonym of Massospondylus – a non-dinosaurian dinosauromorph Lexovisaurus Liaoningvenator Liassaurus - nomen nudum, possibly Sarcosaurus – an anthracothere mammal Ligabueino "Ligomasaurus" – , probably Giraffatitan "Likhoelesaurus" – ; possibly non-dinosaurian Liliensternus " " – preoccupied name, now known as Palaeocursornis " Limnosaurus" – preoccupied name, now known as Telmatosaurus – a crocodilian Liubangosaurus – some sort of non-dinosaurian reptile Longosaurus – junior synonym of Coelophysis Lophorhothon Lophostropheus Loricatosaurus Loricosaurus Losillasaurus Lourinhanosaurus Lourinhasaurus Luanchuanraptor "Luanpingosaurus" – nomen nudum ; Psittacosaurus Lucianosaurus – a non-dinosaurian archosauriform Lucianovenator Lufengosaurus Lukousaurus - possibly a crurotarsan Luoyanggia Lurdusaurus Lusitanosaurus Lusotitan Lusovenator Lycorhinus Lythronax M Macelognathus – a sphenosuchian crocodilian Machairasaurus Machairoceratops Macrocollum Macrodontophion - a member of Lophotrochozoa Macrogryphosaurus Macrophalangia – junior synonym of Chirostenotes "Macroscelosaurus" – nomen nudum ; probable junior synonym of Tanystropheus Macrurosaurus "Madsenius" – nomen nudum , Allosaurus Magnamanus Magnapaulia Magnirostris Magnosaurus "Magulodon" – nomen nudum Magyarosaurus Mahakala Mahuidacursor Maiasaura Majungasaurus Majungatholus – junior synonym of Majungasaurus Malarguesaurus Malawisaurus . Maleevosaurus – junior synonym of Tarbosaurus – synonym of Tyrannosaurus - junior synonym of Mantellisaurus - nomen nudum – a non-dinosaurian dinosauromorph Marisaurus - nomen nudum "Megacervixosaurus" – " " – preoccupied name, now known as Anchisaurus "Megadontosaurus" – ; Microvenator – junior synonym of Coelophysis "Microcephale" – " " – preoccupied name, now known as Microceratus "Microdontosaurus" – "Mifunesaurus" – Miragaia "Mohammadisaurus" – ; Tornieria Mojoceratops – possible junior synonym of Chasmosaurus Mongolosaurus Mongolostegus Monkonosaurus Monoclonius Monolophosaurus "Mononychus " – preoccupied name, now known as Mononykus Mononykus Montanoceratops Morelladon Morinosaurus Moros Morosaurus – junior synonym of Camarasaurus Morrosaurus Mosaiceratops "Moshisaurus" – nomen nudum ; possibly Mamenchisaurus "Mtapaiasaurus" – nomen nudum , probably Giraffatitan "Mtotosaurus" – nomen nudum ; Dicraeosaurus Murusraptor Mussaurus Muttaburrasaurus Muyelensaurus Mymoorapelta N Naashoibitosaurus Nambalia Nankangia Nanningosaurus Nanosaurus Nanotyrannus - possible junior synonym of Tyrannosaurus Nanshiungosaurus Nanuqsaurus Nanyangosaurus Narambuenatitan Nasutoceratops Natronasaurus - self-published name, now known as Alcovasaurus Navajoceratops Nebulasaurus "Nectosaurus " – preoccupied name, now known as Kritosaurus Nedcolbertia Nedoceratops - possible junior synonym of Triceratops Neimongosaurus "Nemegtia " – preoccupied name, now known as Nemegtomaia Nemegtomaia Nemegtonykus Nemegtosaurus "Neosaurus " – preoccupied name; renamed Parrosaurus , which is now Hypsibema Neosodon Neovenator Neuquenraptor Neuquensaurus "Newtonsaurus" – nomen nudum , Zanclodon "Ngexisaurus" – nomen nudum Ngwevu Nhandumirim Nicksaurus - nomen manuscriptum Nigersaurus Ningyuansaurus Niobrarasaurus . Nipponosaurus "Nteregosaurus" – ; Janenschia "Nurosaurus" – – possibly a non-dinosaurian dinosauriform "Nyororosaurus" – nomen nudum; Dicraeosaurus''O Oceanotitan Ohmdenosaurus Ojoceratops Ojoraptorsaurus Oligosaurus Olorotitan Omeisaurus "Omosaurus " – preoccupied name, now known as Dacentrurus Onychosaurus – junior synonym of Rhabdodon , or a dubious ankylosaurian Oohkotokia Opisthocoelicaudia Oplosaurus "Orcomimus" – nomen nudum Orinosaurus – junior synonym of Orosaurus Orkoraptor Ornatotholus – junior synonym of Stegoceras Ornithodesmus "Ornithoides" – nomen nudum ; Saurornithoides Ornitholestes . Ornithomerus Ornithomimoides – a non-dinosaurian archosaur Ornithotarsus – junior synonym of Hadrosaurus Orthogoniosaurus "Oshanosaurus" – - junior synonym of Nanosaurus - junior synonym of Nanosaurus "Ovoraptor" – ; Velociraptor P Pachycephalosaurus Pachyrhinosaurus Pachysauriscus – junior synonym of Plateosaurus Pachysaurops – junior synonym of Plateosaurus "Pachysaurus " – preoccupied name, now known as Pachysauriscus ; junior synonym of Plateosaurus Pachyspondylus – probable junior synonym of Massospondylus Pachysuchus Padillasaurus Pakisaurus - nomen nudum Palaeoctonus – a phytosaur Palaeocursornis – an azhdarchoid pterosaur "Palaeolimnornis" – nomen nudum ; Palaeocursornis , pterodactyloid pterosaur belonging to Azhdarchoidea Palaeopteryx – possibly a bird Palaeosauriscus – junior synonym of Paleosaurus "Palaeosaurus " – preoccupied name, now known as Paleosaurus "Palaeosaurus " – preoccupied name, now known as Sphenosaurus , a non-dinosaurian procolophonid Palaeoscincus Paleosaurus – a non-dinosaurian archosaur Paludititan Paluxysaurus – junior synonym of Sauroposeidon Pampadromaeus Pamparaptor Panamericansaurus Pandoravenator Panguraptor Panoplosaurus Panphagia Pantydraco . nomen nudum; Bactrosaurus – a pareiasaur Pareisactus - now known as Hypsibema missouriensis – a pseudosuchian; possibly a junior synonym of Revueltosaurus " " – preoccupied name, now known as Sauropelta - non-dinosaurian archosaur, now known as Avalonianus - possibly a silesaurid Pitekunsaurus Plateosaurus – possible junior synonym of Astrodon – junior synonym of Struthiosaurus – a turtle Pneumatoraptor – junior synonym of Hylaeosaurus - a non-dinosaurian archosaur Poposaurus – a non-dinosaurian archosaur skull. Postosuchus – a rauisuchian Powellvenator Pradhania Prenocephale Prenoceratops Priconodon Priodontognathus Proa Probactrosaurus Probrachylophosaurus Proceratops – junior synonym of Ceratops Proceratosaurus Procerosaurus – a tanystropheid protorosaur , Tanystropheus "Procerosaurus " – preoccupied name, now known as Ponerosteus Procheneosaurus – junior synonym of Lambeosaurus Procompsognathus Prodeinodon "Proiguanodon" – nomen nudum ; Iguanodon Propanoplosaurus Proplanicoxa – junior synonym of Mantellisaurus Prosaurolophus Protarchaeopteryx Protecovasaurus – a non-dinosaurian archosauriform Protiguanodon – junior synonym of Psittacosaurus Protoavis – described as a bird, probably a chimera including theropod dinosaur bones Protoceratops Protognathosaurus "Protognathus " – preoccupied name, now known as Protognathosaurus Protohadros "Protorosaurus " – preoccupied name, now known as Chasmosaurus Protorosaurus – a non-dinosaurian reptile "Protrachodon" – nomen nudum ; Orthomerus "Proyandusaurus" – nomen nudum ; Hexinlusaurus . Pseudolagosuchus – a non-dinosaurian dinosauromorph; a junior synonym of Lewisuchus Psittacosaurus Pteropelyx Pterospondylus Puertasaurus Pukyongosaurus Pulanesaura Pycnonemosaurus Pyroraptor Q Qantassaurus . Qianzhousaurus R Rachitrema – a chimera primarily based on ichthyosaur fossils Rahiolisaurus "Rahona " – preoccupied name, now known as Rahonavis Rahonavis – possibly a bird Rajasaurus Rapator Rapetosaurus Raptorex - possible junior synonym of Tarbosaurus Ratchasimasaurus Rativates Rayososaurus Razanandrongobe – a crocodylomorph Rebbachisaurus Regaliceratops Regnosaurus Revueltosaurus – a pseudosuchian Rhabdodon Rhadinosaurus – may be non-dinosaurian, possibly crocodilian Rhinorex Rhodanosaurus – junior synonym of Struthiosaurus Rhoetosaurus Rhopalodon – a synapsid Riabininohadros Richardoestesia . Rileya" – preoccupied name, now known as Rileyasuchus – a phytosaur Rinchenia – junior synonym of Coelophysis "Riodevasaurus" - ; Turiasaurus – a non-dinosaurian archosaur Rocasaurus "Roccosaurus" – ; Melanorosaurus "Ronaldoraptor" - S Sacisaurus – a silesaurid Sahaliyania Saichania Saldamosaurus - nomen nudum "Salimosaurus" – nomen nudum , probably Giraffatitan Saltasaurus Saltopus – probably a non-dinosaurian dinosauromorph "Saltriosaurus" – nomen nudum Saltriovenator "Sanchusaurus" – nomen nudum , Gallimimus "Sangonghesaurus" – nomen nudum , Tianchisaurus Sanjuansaurus Sanpasaurus Santanaraptor Sanxiasaurus Sarahsaurus Saraikimasoom - nomen manuscriptum Sarcolestes Sarcosaurus Sarmientosaurus Saturnalia "Sauraechinodon" – nomen nudum ; Echinodon "Sauraechmodon" - nomen nudum ; Echinodon "Saurechinodon" - nomen nudum ; Echinodon Saurolophus Sauroniops Sauropelta Saurophaganax – possible junior synonym of Allosaurus "Saurophagus " – preoccupied name, now known as Saurophaganax Sauroplites Sauroposeidon Saurornithoides Saurornitholestes Savannasaurus Scansoriopteryx Scaphonyx – a rhynchosaur , Hyperodapedon . Scelidosaurus – a non-dinosaurian avemetatarsalian Scolosaurus – junior synonym of Diplodocus "Selimanosaurus" – ; Dicraeosaurus - possible junior synonym of Barilium – junior synonym of Plateosaurus – junior synonym of Tarbosaurus – a rauisuchian Shuvuuia "Siamodracon" - "Sibirosaurus" - , now known as Sibirotitan "Sidormimus" - – a silesaurid Siluosaurus - synonym of Sinopeltosaurus - nomen nudum - a pliosaur; one species, "S." fusuiensis, is actually a dinosaur that may be synonymous with Siamosaurus Sinraptor Sinusonasus Sirindhorna Skorpiovenator "Smilodon " – preoccupied name, now known as Zanclodon Sonidosaurus Sonorasaurus Soriatitan Soumyasaurus - a silesaurid Sphaerotholus Sphenosaurus – a non-dinosaurian reptile Sphenospondylus - junior synonym of Mantellisaurus Spiclypeus Spinophorosaurus Spinops Spinosaurus Spinostropheus Spinosuchus – a non-dinosaurian reptile Spondylosoma – an aphanosaur Squalodon – a cetacean Staurikosaurus Stegoceras Stegopelta Stegosaurides Stegosaurus Stellasaurus Stenonychosaurus Stenopelix Stenotholus – junior synonym of Stygimoloch Stephanosaurus "Stereocephalus " – preoccupied name, now known as Euoplocephalus Sterrholophus – junior synonym of Triceratops Stokesosaurus Stormbergia - junior synonym of Lesothosaurus Strenusaurus – junior synonym of Riojasaurus Streptospondylus Struthiomimus Struthiosaurus Stygimoloch - possible junior synonym of Pachycephalosaurus Stygivenator – junior synonym of Tyrannosaurus Styracosaurus Succinodon – fossilized mollusc borings Suchomimus Suchoprion – a phytosaur Suchosaurus "Sugiyamasaurus" – nomen nudum . Sulaimanisaurus - nomen nudum – junior synonym of Camptosaurus - junior synonym of Acanthopholis " " – preoccupied name, renamed Megapnosaurus which is now a junior synonym of Coelophysis – junior synonym of Pinacosaurus T Tachiraptor Talarurus Talenkauen Talos Tambatitanis Tangvayosaurus Tanius Tanycolagreus Tanystropheus – a protorosaur Tanystrosuchus Taohelong Tapinocephalus – a therapsid Tapuiasaurus Tarascosaurus Tarbosaurus Tarchia Tastavinsaurus Tatankacephalus Tatankaceratops - probable junior synonym of Triceratops Tataouinea Tatisaurus Taurovenator Taveirosaurus Tawa Tawasaurus - junior synonym of Lufengosaurus Tazoudasaurus Technosaurus - possibly non-dinosaurian Tecovasaurus – a non-dinosaurian archosauriform Tehuelchesaurus Teihivenator - nomen nudum Teinurosaurus Teleocrater – a basal avemetatarsalian Telmatosaurus "Tenantosaurus" – nomen nudum ; Tenontosaurus "Tenchisaurus" - nomen nudum ; an unpublished museum name for Tianchisaurus Tendaguria Tengrisaurus . Tenontosaurus – a non-dinosaurian archosaur Termatosaurus – a phytosaur Terminocavus – junior synonym of Lambeosaurus - possible junior synonym of Staurikosaurus - a synonym of Iguanodon "Thotobolosaurus" – ; Kholumolumo "Tianchungosaurus" – ; Dianchungosaurus Tianyulong Tichosteus " " – preoccupied name, now known as Atlantosaurus " " – preoccupied name, now known as Diplotomodon "Tonouchisaurus" – – junior synonym of Barilium Tralkasaurus – a basal crocodylomorph " Triassolestes" – preoccupied name, now known as Trialestes – junior synonym of Tanystropheus, a protorosaur Triceratops Houston Museum of Natural Science . Tsintaosaurus Tugulusaurus Tuojiangosaurus Turanoceratops Turiasaurus Tylocephale Tylosteus – synonym of Pachycephalosaurus Tyrannosaurus Tyrannotitan U Uberabatitan Udanoceratops Ugrosaurus – junior synonym of Triceratops Ugrunaaluk – possible junior synonym of Edmontosaurus Uintasaurus – junior synonym of Camarasaurus Ultrasauros – junior synonym of Supersaurus "Ultrasaurus " – preoccupied name, renamed Ultrasauros which is now a junior synonym of Supersaurus Ultrasaurus Umarsaurus – nomen nudum ; Barsboldia Unaysaurus Unenlagia Unescoceratops "Unicerosaurus" – nomen nudum , a fish Unquillosaurus Urbacodon Utahceratops Utahraptor Uteodon V Vagaceratops Vahiny Valdoraptor Valdosaurus Vallibonavenatrix Variraptor Vayuraptor . Vectensia – junior synonym of Polacanthus - junior synonym of Mantellisaurus – a non-dinosaurian archosaur Venenosaurus W Wadhurstia – junior synonym of Hypselospinus Wakinosaurus Walgettosuchus "Walkeria " – preoccupied name, now known as Alwalkeria "Walkersaurus" – nomen nudum ; Duriavenator Wamweracaudia . nomen nudum, probably Giraffatitan – a bird, possible junior synonym of Archaeopteryx – probably a bird "Wyomingraptor" – nomen nudum, probably Allosaurus''X Xenoceratops Xenoposeidon Xenotarsosaurus Xianshanosaurus Xiaosaurus . Xiaotingia "Xuanhuasaurus" – ; Xuanhuaceratops Y Yaleosaurus – junior synonym of Anchisaurus Yamaceratops Yamanasaurus Yandusaurus Yangchuanosaurus Yaverlandia Yehuecauhceratops "Yezosaurus" – nomen nudum ; a mosasaur Yi "Yibinosaurus" – nomen nudum Yimenosaurus Yingshanosaurus Yinlong Yixianosaurus Yizhousaurus Yongjinglong "Yuanmouraptor" – nomen nudum Yuanmousaurus Yueosaurus Yulong Yunganglong Yunmenglong Yunnanosaurus "Yunxianosaurus" – nomen nudum Yunyangosaurus Yurgovuchia Yutyrannus Z Zalmoxes Zanabazar Zanclodon – non-dinosaurian Zapalasaurus Zapsalis Zaraapelta Zatomus – a non-dinosaurian archosaur Zby Zephyrosaurus . Zhanghenglong - possibly a bird Zhongjianosaurus Zhuchengceratops - junior synonym of Shantungosaurus Zizhongosaurus "Zunityrannus" - , Suskityrannus
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