From Wikipedia, a free encyclopedia written in simple English for easy reading.
This is one huge list of dinosaurs. Some of them are on here such as Archaeopteryx.
- Aachenosaurus — actually a piece of petrified wood
- "Abdallahsaurus" — nomen nudum, probably Brachiosaurus or Giraffatitan
- Abelisaurus
- Abrictosaurus
- Abrosaurus
- Acanthopholis
- Achelousaurus
- Achillobator
- Acracanthus — original invalid name of Acrocanthosaurus
- Acrocanthosaurus
- Actiosaurus — probably an ichthyosaur
- Adamantisaurus
- Adasaurus
- Aegyptosaurus
- Aeolosaurus
- Aepisaurus
- Aetonyx — junior synonym of Massospondylus
- Afrovenator
- Agathaumas
- Aggiosaurus — actually a metriorhynchid crocodilian
- Agilisaurus
- Agnosphitys
- Agrosaurus — probably a junior synonym of Thecodontosaurus
- Agujaceratops
- Agustinia
- "Airakoraptor" — nomen nudum
- Alamosaurus
- "Alashansaurus" — nomen nudum
- Alaskacephale
- Albertosaurus
- Albisaurus
- Alectrosaurus
- Aletopelta
- Algoasaurus
- Alioramus
- Aliwalia
- Allosaurus
- Alocodon
- Altirhinus
- Altispinax
- Alvarezsaurus — possibly a bird
- Alwalkeria
- Alxasaurus
- Amargasaurus
- Amazonsaurus
- Ammosaurus
- Ampelosaurus
- Amphicoelias
- "Amphicoelicaudia" — nomen nudum; possibly Huabeisaurus
- "Amphisaurus" — preoccupied name, now known as Anchisaurus
- Amtosaurus
- Amurosaurus
- Amygdalodon
- Anabisetia
- Anasazisaurus
- Anatosaurus — junior synonym of Edmontosaurus
- Anatotitan
- Anchiceratops
- Anchisaurus
- Andesaurus
- Angaturama — probably junior synonym of Irritator
- "Angloposeidon"[1][2] — nomen nudum
- "Aniksosaurus" — nomen nudum
- Animantarx
- Ankistrodon — actually a proterosuchid archisauriform
- Ankylosaurus
- Anodontosaurus — junior synonym of Euoplocephalus
- Anoplosaurus
- Anserimimus
- Antarctopelta
- Antarctosaurus
- Antetonitrus
- Anthodon — actually a pareiasaur
- Antrodemus — synonym of Allosaurus
- Apatodon — probably junior synonym of Allosaurus
- Apatosaurus — formerly known as Brontosaurus
- Appalachiosaurus
- Aragosaurus
- Aralosaurus
- "Araucanoraptor" — nomen nudum; Neuquenraptor
- Archaeoceratops
- Archaeodontosaurus
- Archaeopteryx — might actually be a bird (by definition)
- "Archaeoraptor" — now known as the bird Yanornis and the dromaeosaur Microraptor
- Archaeornis — junior synonym of the bird Archaeopteryx
- Archaeornithoides
- Archaeornithomimus
- Archaeovolans — junior synonym of the bird Yanornis
- Arctosaurus — actually some sort of non-dinosaurian reptile
- Argentinosaurus
- Argyrosaurus
- Aristosaurus
- Aristosuchus
- Arizonasaurus — actually a rauisuchian
- "Arkanosaurus" — misspelling of Arkansaurus
- Arkansaurus
- Arrhinoceratops
- Arstanosaurus
- Asiaceratops
- Asiamericana
- Asiatosaurus
- Astrodon
- Astrodonius — junior synonym of Astrodon
- Astrodontaurus — junior synonym of Astrodon
- Atlantosaurus — junior synonym of Apatosaurus
- Atlasaurus
- Atlascopcosaurus
- Atrociraptor
- Aublysodon
- Aucasaurus
- Auroraceratops
- "Augustia" — preoccupied name, now known as Agustinia
- Austrosaurus
- Avaceratops
- "Avalonia" — preoccupied name, now known as Avalonianus
- Avalonianus — actually a non-dinosaurian archosaur
- Aviatyrannis
- Avimimus
- Avipes
- Avisaurus — actually an enantiornithine bird
- Azendohsaurus
- Bactrosaurus
- Bagaceratops
- Bagaraatan
- Bahariasaurus
- Bainoceratops
- "Bakesaurus" — nomen nudum
- Bambiraptor
- Barapasaurus
- Barosaurus
- Barsboldia
- Baryonyx
- "Bashunosaurus" — nomen nudum
- Basutodon — actually a non-dinosaurian archosaur
- Bathygnathus — actually a pelycosaur
- Baurutitan
- "Bayosaurus" — nomen nudum
- Becklespinax
- "Beelemodon" — nomen nudum
- Beipiaosaurus
- Bellusaurus
- Belodon — actually a phytosaur
- Betasuchus
- Bienosaurus
- Bihariosaurus
- "Bilbeyhallorum" — nomen nudum; Cedarpelta
- Bissektipelta
- "Blancocerosaurus" — nomen nudum, probably Brachiosaurus or Giraffatitan
- Blikanasaurus
- Bonatitan
- Bonitasaura
- Borealosaurus
- Borogovia
- Bothriospondylus
- Brachiosaurus
- Brachyceratops
- Brachylophosaurus
- Brachypodosaurus
- Brachyrophus — junior synonym of Camptosaurus
- Brachytaenius — actually some sort of non-dinosaurian reptile
- Brachytrachelopan
- Bradycneme
- Brasileosaurus — actually a non-dinosaurian archosaur
- Breviceratops
- Breviparopus — an ichnogenus
- "Brontoraptor" — nomen nudum
- Brontosaurus — junior synonym of Apatosaurus
- Bruhathkayosaurus
- Bugenasaura
- Buitreraptor
- "Byranjaffia" — nomen nudum; Byronosaurus
- Byronosaurus
- Caenagnathasia
- Caenagnathus
- Calamosaurus
- Calamospondylus (Fox, 1866)
- Calamospondylus (Lydekker, 1889) — preoccupied name, now known as Calamosaurus
- Callovosaurus
- Camarasaurus
- Camelotia
- Camposaurus
- "Camptonotus" — preoccupied name, now known as Camptosaurus
- Camptosaurus
- "Campylodon" — preoccupied name, now known as Campylodoniscus
- Campylodoniscus
- "Capitalsaurus" — nomen nudum
- Carcharodontosaurus
- Cardiodon
- "Carnosaurus" — nomen nudum
- Carnotaurus
- Caseosaurus
- Cathartesaura
- Cathetosaurus
- Caudipteryx
- Caudocoelus
- Caulodon — junior synonym of Camarasaurus
- Cedarosaurus
- Cedarpelta
- Cedrorestes
- Centemodon — actually a phytosaur
- Centrosaurus
- Ceratops
- Ceratosaurus
- Cetiosauriscus
- Cetiosaurus
- Changchunsaurus
- "Changdusaurus"[3] — misspelling of Changtusaurus
- "Changtusaurus" — nomen nudum
- Chaoyangosaurus[3] — misspelling of Chaoyangsaurus
- Chaoyangsaurus
- Charonosaurus
- Chasmosaurus
- Chassternbergia
- Chebsaurus
- Cheneosaurus — junior synonym of Hypacrosaurus
- Chialingosaurus
- Chiayusaurus
- Chienkosaurus — actually a crocodilian
- "Chihuahuasaurus" — nomen nudum; Sonorasaurus
- Chilantaisaurus
- Chindesaurus
- Chingkankousaurus
- "Chinshakiangosaurus" — nomen nudum
- Chirostenotes
- Chondrosteosaurus
- Chondrosteus[4] — misspelling of Chondrosteosaurus
- Chuandongocoelurus
- Chuanjiesaurus
- Chubutisaurus
- Chungkingosaurus
- Cionodon
- Citipati
- Cladeiodon — actually a non-dinosaurian archosaur
- Claorhynchus
- Claosaurus
- Clarencea — actually a sphenosuchian
- Clasmodosaurus
- Clepsysaurus
- Clevelanotyrannus[3] — junior synonym of Nanotyrannus
- Coelophysis
- "Coelosaurus" — preoccupied name, now known as Ornithomimus
- Coeluroides
- Coelurosauravus — actually a prolacertiform archosauromorph
- "Coelurosaurus" — nomen nudum
- Coelurus
- Colepiocephale
- Colonosaurus — junior synonym of the bird Ichthyornis dispar
- "Coloradia" — preoccupied name, now known as Coloradisaurus
- Coloradisaurus
- Colossosaurus
- Compsognathus
- Compsosuchus
- Conchoraptor
- Condorraptor
Drawing of the movement of a
Corythosaurus.
- Corythosaurus
- Craspedodon
- Crataeomus
- Craterosaurus
- Creosaurus
- Crichtonsaurus
- Cristatusaurus
- Crosbysaurus — actually a non-dinosaurian archosaur
- Cryolophosaurus
- Cryptodraco — junior synonym of Cryptosaurus
- Cryptosaurus
- Cryptovolans
- Cumnoria — junior synonym of Camptosaurus
- "Cylindricodon" — preoccupied name, now known as Hylaeosaurus
- Cystosaurus — actually a crocodilian
- Daanosaurus
- Dacentrurus
- "Dachongosaurus" — nomen nudum
- "Dachungosaurus"[3] — misspelling of "Dachongosaurus"
- Dakosaurus — actually a metriorhynchid crocodilian
- "Damalasaurus" — nomen nudum
- Dandakosaurus
- Danubiosaurus — junior synonym of Struthiosaurus
- Daptosaurus
- Dashanpusaurus
- Daspletosaurus
- Dasygnathoides — actually a non-dinosaurian archosaur, junior synonym of Ornithosuchus
- "Dasygnathus" — preoccupied name, now known as Dasygnathoides
- Datousaurus
- Deinocheirus
- Deinodon
- Deinonychus
- Deltadromeus
- Denversaurus
- Deuterosaurus — actually a therapsid
- Dianchungosaurus
- Diceratops — preoccupied name, has not yet been renamed
- Diclonius
- Dicraeosaurus
- Didanodon
- Dilong
- Dilophosaurus
- Dimodosaurus
- Dinheirosaurus
- Dinodocus
- "Dinosaurus" — preoccupied name, now known as Gresslyosaurus
- Dinotyrannus — junior synonym of Tyrannosaurus
- Diplodocus
- Diplotomodon
- Diracodon
- Dolichosuchus
- "Domeykosaurus" — nomen nudum
- Doratodon — actually a crocodilian
- Doryphorosaurus — junior synonym of Kentrosaurus
- Draconyx
- Dracorex
- Dracopelta
- Dracovenator
- Dravidosaurus
- Drinker
- Dromaeosauroides
- Dromaeosaurus
- Dromiceiomimus
- Dromicosaurus
- Dryosaurus
- Dryptosauroides
- Dryptosaurus
- Dubreuillosaurus
- Dynamosaurus — junior synonym of Tyrannosaurus
- Dyoplosaurus
- Dysalotosaurus — junior synonym of Dryosaurus
- Dysganus
- Dyslocosaurus
- Dystrophaeus
- Dystylosaurus
- Echinodon
- Edmarka
- Edmontonia
- Edmontosaurus
- Efraasia
- Einiosaurus
- Ekrixinatosaurus
- Elachistosuchus
- Elaphrosaurus
- Elmisaurus
- Elopteryx
- Elosaurus — junior synonym of Apatosaurus
- "Elvisaurus" — nomen nudum; Cryolophosaurus
- Emausaurus
- Embasaurus
- Enigmosaurus
- Eobrontosaurus
- Eoceratops
- "Eohadrosaurus" — nomen nudum; Eolambia
- Eolambia
- Eolosaurus[3] — junior synonym of Aeolosaurus
- Eoraptor
- Eotyrannus
- Epachthosaurus
- Epanterias
- "Ephoenosaurus" — nomen nudum
- Epicampodon — actually a proterosuchid archisauriform
- Epidendrosaurus
- Equijubus
- Erectopus
- Erketu
- Erliansaurus
- Erlikosaurus
- Eshanosaurus
- Euacanthus[3] — junior synonym of Polacanthus
- Eucamerotus
- Eucentrosaurus — junior synonym of Centrosaurus
- Eucercosaurus
- Eucnemesaurus
- Eucoelophysis
Sketch of
Euoplocephalus.
- Eugongbusaurus
- Euhelopus
- Euoplocephalus
- Eupodosaurus — possibly a marine reptile
- Eureodon[3] — junior synonym of Tenontosaurus
- Eurolimnornis — possibly a bird
- Euronychodon
- Europasaurus
- Euskelosaurus
- Eustreptospondylus
- Fabrosaurus
- Falcarius
- Fenestrosaurus[3] — junior synonym of Oviraptor
- Ferganasaurus
- Ferganosaurus[5] — misspelling of Ferganasaurus
- Ferganocephale
- Frenguellisaurus — junior synonym of Herrerasaurus
- Fukuiraptor
- Fukuisaurus
- Fulengia
- Fulgurotherium
- "Fusinasus" — nomen nudum; Eotyrannus
- Fusuisaurus
- "Futabasaurus" — nomen nudum
- "Futalognkosaurus" — misspelling of Futalongkosaurus
- "Futalongkosaurus" — nomen nudum
- "Gadolosaurus" — nomen nudum
- Galesaurus — actually a therapsid
- Gallimimus
- Galtonia
- Galveosaurus
- Galvesaurus — misspelling of Galveosaurus
- Gargoyleosaurus
- Garudimimus
- Gasosaurus
- Gasparinisaura
- Gastonia
- "Gavinosaurus" — nomen nudum; Eotyrannus
- Genusaurus
- Genyodectes
- Geranosaurus
- Giganotosaurus
- Gigantosaurus (Seeley, 1869) — junior synonym of Pelorosaurus
- "Gigantosaurus" (E. Fraas, 1908) — preoccupied name, now known as Tornieria, Malawisaurus, and Janenschia
- Gigantoscelus
- Gigantspinosaurus
- Gilmoreosaurus
- "Ginnareemimus" — nomen nudum
- Giraffatitan
- Glyptodontopelta
Skeleton of
Giraffatitan.
- Gobipteryx — actually an enantiornithine bird
- Gobisaurus
- Gobititan
- "Godzillasaurus" — nomen nudum; Gojirasaurus
- Gojirasaurus
- Gondwanatitan
- Gongbusaurus
- Gongxianosaurus
- Gorgosaurus
- Goyocephale
- Graciliceratops
- Graciliraptor
- Gracilisuchus — actually a non-dinosaurian archosaur
- "Gravisaurus" — nomen nudum; Lurdusaurus
- Gravitholus
- Gresslyosaurus
- Griphornis — junior synonym of the bird Archaeopteryx
- Griphosaurus — junior synonym of the bird Archaeopteryx
- Gryponyx
- Gryposaurus
- Guaibasaurus
- Guanlong
- Gwyneddosaurus
- Gyposaurus
- "Hadrosauravus"[3] — junior synonym of Gryposaurus
- Hadrosaurus
- Hagryphus
- Hallopus — actually a crocodilian
- Halticosaurus
- Hanssuesia
- "Hanwulosaurus" — nomen nudum
- Haplocanthosaurus
- "Haplocanthus" — preoccupied name, now known as Haplocanthosaurus
- Harpymimus
- Hecatasaurus — junior synonym of Telmatosaurus
- "Heilongjiangosaurus" — nomen nudum
- Heishansaurus
- "Helopus" — preoccupied name, now known as Euhelopus
- Heptasteornis
- Herbstosaurus — actually a pterosaur
- Herrerasaurus
- Hesperosaurus
- Heterodontosaurus
- Heterosaurus — junior synonym of Iguanodon
- Hexinlusaurus
- Heyuannia
- Hierosaurus
- Hikanodon
- "Hironosaurus" — nomen nudum
- "Hisanohamasaurus" — nomen nudum
- Histriasaurus
- Homalocephale
- "Honghesaurus" — nomen nudum; Yandusaurus
- Hongshanosaurus
- Hoplitosaurus
- Hoplosaurus
- Hortalotarsus
- Huabeisaurus
- Huanghetitan
- Huaxiagnathus
- "Huaxiasaurus" — nomen nudum; Huaxiagnathus
- Huayangosaurus
Drawing of
Huayangosaurus.
- Hudiesaurus
- Hulsanpes — actually a bird
- Hungarosaurus
- Hylaeosaurus
- Hylosaurus — junior synonym of Hylaeosaurus
- Hypacrosaurus
- Hypselosaurus
- "Hypselorhachis" — nomen nudum
- Hypsibema
- Hypsilophodon
- Hypsirophus — junior synonym of Stegosaurus
- "Ichabodcraniosaurus" — nomen nudum
- Iguanodon
- "Iguanoides" — nomen nudum; Iguanodon
- Iguanosaurus[3] — junior synonym of Iguanodon
- Iliosuchus
- Ilokelesia
- Incisivosaurus
- Indosaurus
- Indosuchus
- Ingenia — preoccupied name, has not yet been renamed
- Inosaurus
- Irritator
- Isanosaurus
- Ischisaurus — junior synonym of Herrerasaurus
- Ischyrosaurus — preoccupied name, has not yet been renamed
- Isisaurus
- "Issasaurus" — nomen nudum; Dicraeosaurus
- Itemirus
- Iuticosaurus
- Jainosaurus
- Janenschia
- Jaxartosaurus
- Jeholornis — actually a bird
- Jeholosaurus
- Jenghizkhan — junior synonym of Tarbosaurus
- "Jensenosaurus" — nomen nudum; Supersaurus
- "Jiangjunmiaosaurus"[3] — nomen nudum
- Jiangshanosaurus
- Jinfengopteryx
- Jingshanosaurus
- Jinzhousaurus
- Jiutaisaurus
- Jixiangornis— actually a bird
- Jobaria
- Jubbulpuria
- Jurapteryx — junior synonym of the bird Archaeopteryx
- Jurassosaurus
- Juravenator
- "Kagasaurus" — nomen nudum
- Kaijiangosaurus
- Kakuru
- Kangnasaurus
- Karongasaurus
- "Katsuyamasaurus" — nomen nudum
- Kelmayisaurus
- Kentrosaurus
- Kentrurosaurus — junior synonym of Kentrosaurus
- Kerberosaurus
- Khaan
- "Kitadanisaurus" — nomen nudum, some material later named Fukuiraptor
- "Kittysaurus" — nomen nudum; Eotyrannus
- Klamelisaurus
- Koparion
- "Koreanosaurus" — nomen nudum
- "Koreasaurus"[3] — nomen nudum
- Kotasaurus
- Kritosaurus
- Krzyzanowskisaurus
- Kulceratops
- Kunmingosaurus
- Kuszholia — probably a bird
- Labocania
- Labrosaurus
- Laelaps — preoccupied name, now known as Dryptosaurus
- Laevisuchus
- Lagerpeton — actually a non-dinosaurian dinosauromorph
- Lagosuchus — actually a non-dinosaurian dinosauromorph
- Lamaceratops
- Lambeosaurus
- Lametasaurus
- Lanasaurus
- "Lancangjiangosaurus"[3] — misspelling of "Lancanjiangosaurus"
- Lancangosaurus[3] — junior synonym of Datousaurus
- "Lancanjiangosaurus" — nomen nudum
- Lanzhousaurus
- Laornis — actually a bird
- Laosaurus
- Laplatasaurus
- Lapparentosaurus
- Leaellynasaura
- Leipsanosaurus — junior synonym of Kentrosaurus
- "Lengosaurus" — nomen nudum; Eotyrannus
Drawing of a
Leptoceratops.
- Leptoceratops
- Leptospondylus
- Lesothosaurus
- Lessemsaurus
- Lewisuchus — actually a non-dinosaurian dinosauromorph
- Lexovisaurus
- Liaoceratops
- Liaoningosaurus
- "Liassaurus" — nomen nudum
- Libycosaurus — actually an anthracothere mammal
- Ligabueino
- Ligabuesaurus
- "Ligomasaurus" — nomen nudum, probably Brachiosaurus or Giraffatitan
- "Likhoelesaurus" — nomen nudum
- Liliensternus
- Limaysaurus
- "Limnornis" — preoccupied name, now known as the birds Eurolimnornis and Palaeocursornis
- "Limnosaurus" — preoccupied name, now known as Telmatosaurus
- Lirainosaurus
- Lisboasaurus — actually a crocodilian
- Loncosaurus
- Longisquama — actually some sort of non-dinosaurian reptile
- Longosaurus
- Lophorhothon
- Loricosaurus
- Losillasaurus
- Lourinhanosaurus
- Lourinhasaurus
- "Luanpingosaurus" — nomen nudum; Psittacosaurus
- Lucianosaurus
- Lufengocephalus — junior synonym of Lufengosaurus
- Lufengosaurus
- Lukousaurus
- Lurdusaurus
- Lusitanosaurus
- Lusotitan
- Lycorhinus
- Macelognathus — actually a sphenosuchian crocodilian
- Macrodontophion
- Macrophalangia — junior synonym of Chirostenotes
- "Macroscelosaurus" — nomen nudum
- Macrurosaurus
- "Madsenius" — nomen nudum
- Magnirostris
- Magnosaurus
- "Magulodon" — nomen nudum
- Magyarosaurus
- Maiasaura
- Majungasaurus
- Majungatholus
- Malawisaurus
- Maleevosaurus — junior synonym of Tarbosaurus
- Maleevus
Sketch of the sauropod
Mamenchisaurus.
- Mamenchisaurus
- Mandschurosaurus
- Manospondylus — synonym of Tyrannosaurus
- Mantellisaurus
- Mapusaurus
- Marasuchus — actually a non-dinosaurian dinosauromorph
- Marmarospondylus
- Marshosaurus
- Masiakasaurus
- Massospondylus
- Maxakalisaurus
- "Medusaceratops" — nomen nudum
- "Megacervixosaurus" — nomen nudum
- "Megadactylus" — preoccupied name, now known as Anchisaurus
- Megadontosaurus[3] — junior synonym of Microvenator
- Megalosaurus
- Megapnosaurus
- Megaraptor
- Mei
- Melanorosaurus
- Mendozasaurus
- "Merosaurus" — nomen nudum
- Metriacanthosaurus
- "Microcephale" — nomen nudum
- "Microceratops" — preoccupied name, has not yet been renamed
- Microcoelus — junior synonym of Saltasaurus
- "Microdontosaurus" — nomen nudum
- Microhadrosaurus
- Micropachycephalosaurus
- Microraptor
- Microsaurops — junior synonym of Saltasaurus
- Microvenator
- "Mifunesaurus" — nomen nudum
- Minmi
- Mirischia
- "Moabosaurus" — nomen nudum
- Mochlodon
- "Mohammadisaurus" — nomen nudum; Tornieria
Cast of a
Muttaburrasaurus skeleton.
- Mongolosaurus
- Monkonosaurus
- Monoclonius
- Monolophosaurus
- Mononychus — preoccupied name, now known as Mononykus
- Mononykus — possibly a bird
- Montanoceratops
- Morinosaurus
- Morosaurus — junior synonym of Camarasaurus
- Moshisaurus[3] — junior synonym of Mamenchisaurus
- "Mtapaiasaurus" — nomen nudum, probably Brachiosaurus or Giraffatitan
- "Mtotosaurus" — nomen nudum; Dicraeosaurus
- Mussaurus
- Muttaburrasaurus
- Mymoorapelta
- Naashoibitosaurus
- Nanosaurus
- Nanotyrannus
- Nanshiungosaurus
- Nanyangosaurus
- "Nectosaurus" — preoccupied name, now known as Kritosaurus
- Nedcolbertia
- Neimongosaurus
- "Nemegtia" — preoccupied name, now known as Nemegtomaia
- Nemegtomaia
- Nemegtosaurus
- "Neosaurus" — preoccupied name, now known as Parrosaurus
Sketch of a
Nanotyrannus.
- Neosodon
- Neovenator
- Neuquenraptor
- Neuquensaurus
- "Newtonsaurus" — nomen nudum
- "Ngexisaurus" — nomen nudum
- Nigersaurus
- Niobrarasaurus
- Nipponosaurus
- Noasaurus
- Nodocephalosaurus
- Nodosaurus
- Nomingia
- Nothronychus
- Notoceratops
- Notohypsilophodon
- Nouerosaurus[3] — junior synonym of Nurosaurus
- Nqwebasaurus
- "Nteregosaurus" — nomen nudum; Janenschia
- "Nuoersaurus" — nomen nudum
- Nurosaurus[3]
- Nuthetes
- "Nyasasaurus" — nomen nudum
- "Nyororosaurus" — nomen nudum; Dicraeosaurus
- Ohmdenosaurus
- Oligosaurus — junior synonym of Rhabdodon
- Olorotitan
- Omeisaurus
- Omnivoropteryx - probably a bird
- "Omosaurus" — preoccupied name, now known as Dacentrurus
- Onychosaurus — synonym of Zalmoxes
- Opisthocoelicaudia
- Oplosaurus
- "Orcomimus" — nomen nudum
- Orinosaurus
- Ornatotholus
- Ornithodesmus — actually a pterosaur
- Ornithoides[3] — junior synonym of Saurornithoides
- Ornitholestes
- Ornithomerus — junior synonym of Rhabdodon
- Ornithomimoides
- Ornithomimus
- Ornithopsis
- Ornithosuchus — actually a non-dinosaurian archosaur
- Ornithotarsus
- Orodromeus
- "Orosaurus" — preoccupied name, now known as Orinosaurus
- Orthogoniosaurus
- Orthomerus
- "Oshanosaurus" — nomen nudum
- Othnielia
- Othnielosaurus
- Otogosaurus
- Ouranosaurus
- Oviraptor
- Ovoraptor[3] — junior synonym of Velociraptor
- Ozraptor
- Pachycephalosaurus
- Pachyrhinosaurus
- Pachysauriscus
- Pachysaurops
- "Pachysaurus" — preoccupied name, now known as Pachysauriscus
- Pachyspondylus
- Palaeoctonus — actually a phytosaur
- Palaeocursornis — possibly a bird
- "Palaeolimnornis" — nomen nudum; Palaeocursornis, probable bird
- Palaeopteryx — possibly a bird
- Palaeosauriscus — junior synonym of Paleosaurus
- "Palaeosaurus" (Riley & Stutchbury, 1836) — preoccupied name, now known as Paleosaurus
- "Palaeosaurus" (Fitzinger, 1840) — preoccupied name, now known as Sphenosaurus, a non-dinosaurian procolophonid
- Palaeoscincus
- Paleosaurus — actually a non-dinosaurian archosaur
- Panoplosaurus
- Paraiguanodon[3] — junior synonym of Bactrosaurus
- Paralititan
- Paranthodon
- Pararhabdodon
- Parasaurolophus
- "Pareiasaurus" — actually a pareiasaur
- "Parhabdodon"[3] — junior synonym of Rhabdodon
- Parksosaurus
- Paronychodon
- Parrosaurus
- Parvicursor — possibly a bird
- Patagonykus — possibly a bird
- Patagosaurus
- "Patricosaurus" — actually a mixture of various non-dinosaurian reptiles
- Pawpawsaurus
- Pectinodon — junior synonym of Troodon
- Pedopenna
- Peishansaurus
- Pekinosaurus
- Pelecanimimus
- Pellegrinisaurus
- Pelorosaurus
- "Peltosaurus" — preoccupied name, now known as Sauropelta
- Penelopognathus
- Pentaceratops
- Phaedrolosaurus
- Phuwiangosaurus
- Phyllodon
- Piatnitzkysaurus
- Picrodon — junior synonym of Avalonianus
- Pinacosaurus
- Pisanosaurus
- Piveteausaurus
- Planicoxa
- Plateosauravus
- Plateosaurus
- Platyceratops
- Pleurocoelus
- Pleuropeltus — junior synonym of Struthiosaurus
- Pneumatoarthrus — actually a turtle
- Podokesaurus
- Poekilopleuron
- Polacanthoides
- Polacanthus
- Polyodontosaurus — junior synonym of Troodon
- Polyonax
- Ponerosteus
- Poposaurus — actually a non-dinosaurian archosaur
- Postosuchus — actually a rauisuchian
- Prenocephale
- Prenoceratops
- Priconodon
- Priodontognathus
- Probactrosaurus
- Proceratops
- Proceratosaurus
- Procerosaurus (von Huene, 1902) — actually a prolacertiform archosauromorph
- Procerosaurus (Fritsch, 1905) — preoccupied name, now known as Ponerosteus
- Procheneosaurus — junior synonym of Corythosaurus and Lambeosaurus
- Procompsognathus
- Prodeinodon
- "Proiguanodon" — nomen nudum; Iguanodon
- Prosaurolophus
- Protarchaeopteryx
- Protecovasaurus — actually a non-dinosaurian archosaur
- Protiguanodon — junior synonym of Psittacosaurus
- Protoavis — nomen dubium; supposedly a bird
- Protoceratops
- Protognathosaurus
- "Protognathus" — preoccupied name, now known as Protognathosaurus
- Protohadros
- Protorosaurus (von Meyer, 1830) — non-dinosaurian reptile
- "Protorosaurus" (Lambe, 1914) — preoccupied name, now known as Chasmosaurus
- "Protrachodon" — nomen nudum; Orthomerus
- "Proyandusaurus" — nomen nudum; Hexinlusaurus.
- Pseudolagosuchus — actually a non-dinosaurian dinosauromorph
- Psittacosaurus
- Pteropelyx
- Pterospondylus
- Puertasaurus
- Pukyongosaurus
- Pycnonemosaurus
- Pyroraptor
- Rachitrema — possibly an ichthyosaur
- "Rahona" — preoccupied name, now known as Rahonavis
- Rahonavis — possibly a bird
- Rajasaurus
- Rapator
- Rapetosaurus
- Rayososaurus
- Rebbachisaurus
- Regnosaurus
- Revueltosaurus — actually a pseudosuchian
- Rhabdodon
- Rhadinosaurus
- Rhaetosaurus
- Rheteosaurus
- Rhodanosaurus
- Rhoetosaurus
- Rhopalodon
- Ricardoestesia
- Richardoestesia[3] — misspelling of Ricardoestesia
Profile sketch of the head of
Rinchenia.
- "Rileya" — preoccupied name, now known as Rileyasuchus
- Rileyasuchus
- Rinchenia
- Rinconsaurus
- Rioarribasaurus — junior synonym of Coelophysis
- Riojasaurus
- Riojasuchus — actually a non-dinosaurian archosaur
- Rocasaurus
- Roccosaurus[3] — junior synonym of Melanorosaurus
- Ruehleia
- Rugops
- "Rutellum" — pre-Linnaean name
- Sacisaurus — possibly a basal dinosaur relative
- Saichania
- "Salimosaurus" — nomen nudum, probably Brachiosaurus or Giraffatitan
- Saltasaurus
- Saltopus
- "Saltriosaurus" — nomen nudum
- "Sanchusaurus"[3] — nomen nudum
- "Sangonghesaurus"[3] — nomen nudum
- Sanpasaurus
- Santanaraptor
- Sarcolestes
- Sarcosaurus
- Saturnalia
- Sauraechinodon[3] — junior synonym of Echinodon
- "Sauraechmodon" — nomen nudum; Echinodon
- Saurolophus
- Sauropelta
- Saurophaganax
- "Saurophagus" — preoccupied name, now known as Saurophaganax
- Sauroplites
- "Sauropodus" — nomen nudum[1]
- Sauroposeidon
- Saurornithoides
- Saurornitholestes
- Scansoriopteryx
- Scaphonyx — actually a rhynchosaur
- Scelidosaurus
- Scipionyx
- Scleromochlus — actually a non-dinosaurian avemetatarsalian
- Scolosaurus — junior synonym of Euoplocephalus
- "Scrotum" — a nomen oblitum no longer considered valid
- Scutellosaurus
- Secernosaurus
- Segisaurus
- Segnosaurus
- Seismosaurus
- "Selimanosaurus" — nomen nudum; Dicraeosaurus
- Sellosaurus
- Serendipaceratops
- Shamosaurus
- Shanshanosaurus — junior synonym of Tarbosaurus
- Shantungosaurus
- Shanxia
- Shanyangosaurus
- Shenzhouraptor — actually a bird, also known as Jeholornis
- Shenzhousaurus
- Shixinggia
- Shuangmiaosaurus
- Shunosaurus
- Shuosaurus[3] — misspelling of Shunosaurus
- Shuvosaurus — actually a rauisuchian
- Shuvuuia — possibly a bird
- Siamosaurus
- Siamotyrannus
- Sigilmassasaurus
- Silesaurus
- Siluosaurus
- Silvisaurus
- Sinocoelurus
- Sinornithoides
- Sinornithomimus
- Sinornithosaurus
- Sinosauropteryx
- Sinosaurus
- Sinovenator
- Sinraptor
- Sinucerasaurus — junior synonym of Sinusonasus
- Sinusonasus
- "Smilodon" — preoccupied name, now known as Zanclodon
- Sonidosaurus
- Sonorasaurus
- Sphaerotholus
- Sphenosaurus — actually a non-dinosaurian reptile
- Sphenospondylus — junior synonym of Iguanodon
- Spinosaurus
- Spinostropheus
- Spinosuchus — actually a non-dinosaurian reptile
- Spondylosoma
- Squalodon — actually a cetacean
- Staurikosaurus
- Stegoceras
- Stegopelta
- Stegosaurides
- "Stegosauroides"[3] — misspelling of Stegosaurides
- Stegosaurus
- Stenonychosaurus — junior synonym of Troodon
- Stenopelix
- Stenotholus — junior synonym of Stygimoloch
- Stephanosaurus
- "Stereocephalus" — preoccupied name, now known as Euoplocephalus
- "Stereosaurus" — nomen nudum
- Sterrholophus — junior synonym of Triceratops
- Stokesosaurus
- Stormbergia
- Strenusaurus
Early sketch of a
Struthiomimus.
- Streptospondylus
- Struthiomimus
- Struthiosaurus
- Stygimoloch
- Stygivenator — junior synonym of Tyrannosaurus
- Styracosaurus
- Succinodon — actually fossilized mollusc borings
- Suchomimus
- Suchoprion — actually a phytosaur
- "Sugiyamasaurus" — nomen nudum
- Supersaurus
- Suuwassea
- Symphyrophus — junior synonym of Camptosaurus
- Syngonosaurus
- "Syntarsus" — preoccupied name, has not yet been renamed (but see Megapnosaurus)
- Syrmosaurus
- "Szechuanoraptor" — nomen nudum
- Szechuanosaurus
- Talarurus
- Talenkauen
- Tangvayosaurus
- Tanius
- Tanycolagreus
- Tanystropheus — actually a prolacertiform archosauromorph
- Tanystrosuchus
- Tapinocephalus — actually a therapsid
- Tarascosaurus
- Tarbosaurus
- Tarchia
- Tatisaurus
- Taveirosaurus
- Tawasaurus
- Tazoudasaurus
- Technosaurus
- Tecovasaurus
- Tehuelchesaurus
- Teinurosaurus
- "Teleocrater" — nomen nudum
- Telmatosaurus
- Tenantosaurus[3] — misspelling of Tenontosaurus
- Tenchisaurus[6] — actually an archosaur
- Tendaguria
- Tenontosaurus
- Teratosaurus — actually a non-dinosaurian archosaur
- Termatosaurus — actually a phytosaur
- Tetragonosaurus — junior synonym of Corythosaurus and Lambeosaurus
- Texasetes
- Teyuwasu
- Thecocoelurus
- Thecodontosaurus
- Thecospondylus
- Theiophytalia
- Therizinosaurus
- Therosaurus — junior synonym of Iguanodon
- Thescelosaurus
- Thespesius
- "Thotobolosaurus" — nomen nudum
- Tianchisaurus
- "Tianchungosaurus" — nomen nudum
- Tianzhenosaurus
- Tichosteus
- Tienshanosaurus
- Timimus
- Titanosaurus (Lydekker, 1877)
- Titanosaurus (Marsh, 1877) — preoccupied name, now known as Atlantosaurus
- Tochisaurus
- "Tomodon" — preoccupied name, now known as Diplotomodon
- "Tonouchisaurus" — nomen nudum
- Tornieria
- Torosaurus
- Torvosaurus
- Trachodon
- Trialestes — actually a crocodilian
- "Triassolestes" — preoccupied name, now known as Trialestes
- Tribelesodon — actually a prolacertiform archosauromorph
- Triceratops
- Trigonosaurus
- Trimucrodon
- Troodon
- Tsaagan
- Tsagantegia
- Tsintaosaurus
- Tugulusaurus
- Tuojiangosaurus
- Turanoceratops
- Tylocephale
- Tylosteus — synonym of Pachycephalosaurus
- Tyrannosaurus
- Tyrannotitan
- "Tyreophorus" — nomen nudum
- Udanoceratops
- Ugrosaurus — probably junior synonym of Triceratops
- Uintasaurus — junior synonym of Camarasaurus
- Ultrasauros — junior synonym of Supersaurus
- Ultrasaurus (H. M. Kim, 1983)
- Ultrasaurus (Jensen, 1985) — preoccupied name, now known as Ultrasauros
- Umarsaurus[3] — junior synonym of Barsboldia
- Unaysaurus
- Unenlagia
- "Unicerosaurus" — nomen nudum, actually a fish
- Unquillosaurus
- Utahraptor
- Valdoraptor
- Valdosaurus
- Variraptor
- Vectensia — junior synonym of Hylaeosaurus
- Vectisaurus
- Velocipes
- Velociraptor
- Velocisaurus
- Venaticosuchus — actually a non-dinosaurian archosaur
- Venenosaurus
- Volkheimeria
- Vulcanodon
- Wakinosaurus
- Walgettosuchus
- "Walkeria" — preoccupied name, now known as Alwalkeria
- "Walkersaurus" — nomen nudum
- "Wangonisaurus" — nomen nudum, probably Brachiosaurus or Giraffatitan
- Wannanosaurus
- Wellnhoferia — actually a bird, possibly junior synonym of Archaeopteryx
- Wuerhosaurus
- Wyleyia — actually a bird
- "Wyomingraptor" — nomen nudum
- Xenotarsosaurus
- Xiaosaurus
- Xinjiangovenator
- Xuanhanosaurus
- Xuanhuaceratops
- "Xuanhuasaurus"[3] — nomen nudum
- "Yaleosaurus" — junior synonym of Hylaeosaurus
- Yamaceratops
- Yandusaurus
- Yangchuanosaurus
- Yanornis — actually a bird
- Yaverlandia
- Yaxartosaurus[3] — misspelling of Jaxartosaurus
- "Yezosaurus" — nomen nudum
- "Yibinosaurus" — nomen nudum
- Yimenosaurus
- "Yingshanosaurus" — nomen nudum
- Yinlong
- Yixianosaurus
- Yuanmousaurus
- "Yubasaurus" — nomen nudum
- Yunnanosaurus
- "Yunxiansaurus" — nomen nudum