How Many Dinosaurs Species Were There

How many dinosaurs were there. There are 1347 Dinosaurs Species in the world.

Millions of years ago, long before there were any people, there were dinosaurs. Dinosaurs were one of several kinds of prehistoric reptiles that lived during the Mesozoic Era, the “Age of Reptiles.”

The dinosaurs dominated the Earth for over 165 million years, but mysteriously went extinct 65 million years ago. Paleontologists study their fossil remains to learn about the amazing prehistoric world of dinosaurs.

Dinosaurs were land-dwelling reptiles that walked with an erect stance. Their unique hip structure caused their legs to stick out from under their bodies, and not sprawl out from the side (like other reptiles ). When dinosaurs first evolved from more primitive archosaurs, they were bipedal (walked on two legs). Much later, some dinosaur groups returned to a four-legged stance, having hind legs much larger than their front legs .

There were lots of different kinds of dinosaurs that lived at different times. Some were HUGE, some were small. Some walked on two legs, some walked on four . Some were speedy , and some were slow and lumbering . Some were carnivores and some were herbivores . Some were armor-plated, some had thick, bumpy skin, some had horns , some even had primitive feathers.

No one knows what colors or patterns they were, how they sounded, how they behaved, how they mated, or even how to tell whether a fossil came from a male or a female dinosaur.

Dinosaurs suddenly became extinct about 65 million years ago, at the end of the Cretaceous period, which was a time of high volcanic and tectonic activity. There are a lot of theories why the extinction occurred. The most widely accepted theory is that an asteroid impact caused major climactic changes which the dinosaurs couldn’t adapt to.

All that’s left of the dinosaurs are fossils.

Although dinosaurs’ fossils have been known since 1818, the term dinosaur (deinos = terrifying; sauros = lizard) was coined by the English anatomist Sir Richard Owen in 1842. The only three dinosaurs known at the time were Megalosaurus, Iguanodon, and Hylaeosaurus, very large dinosaurs.

List of dinosaurs

  1. Aachenosaurus – actually a piece of petrified wood
  2. Aardonyx
  3. “Abdallahsaurus” – nomen nudum, probably Brachiosaurus or Giraffatitan
  4. Abelisaurus
  5. Abrictosaurus
  6. Abrosaurus
  7. Abydosaurus
  8. Acanthopholis
  9. Achelousaurus
  10. Achillesaurus
  11. Achillobator
  12. “Acracanthus” – original invalid name of Acrocanthosaurus
  13. Acristavus
  14. Acrocanthosaurus
  15. Actiosaurus – probably an ichthyosaur
  16. Adamantisaurus
  17. Adasaurus
  18. Adeopapposaurus
  19. Aegyptosaurus
  20. Aeolosaurus
  21. Aepisaurus
  22. Aerosteon
  23. Aetonyx – possible junior synonym of Massospondylus
  24. Afrovenator
  25. Agathaumas
  26. Aggiosaurus – actually a metriorhynchid crocodilian
  27. Agilisaurus
  28. Agnosphitys
  29. Agrosaurus – probably a junior synonym of Thecodontosaurus
  30. Agujaceratops
  31. Agustinia
  32. Ahshislepelta
  33. “Airakoraptor” – nomen nudum
  34. Ajkaceratops
  35. Alamosaurus
  36. “Alashansaurus” – nomen nudum; Shaochilong
  37. Alaskacephale
  38. Albalophosaurus
  39. Albertaceratops
  40. Albertonykus
  41. Albertosaurus
  42. Albinykus
  43. Albisaurus – a non-dinosaurian reptile
  44. Alectrosaurus
  45. Aletopelta
  46. Algoasaurus
  47. Alioramus
  48. Aliwalia – junior synonym of Eucnemesaurus
  49. Alocodon
  50. Altirhinus
  51. Altispinax
  52. Alvarezsaurus
  53. Alwalkeria
  54. Alxasaurus
  55. Amargasaurus
  56. Amargatitanis
  57. Amazonsaurus
  58. Ammosaurus
  59. Ampelosaurus
  60. Amphicoelias
  61. “Amphicoelicaudia” – nomen nudum; possibly Huabeisaurus
  62. “Amphisaurus” – preoccupied name, now known as Anchisaurus
  63. Amtocephale
  64. Amtosaurus – possibly Talarurus
  65. Amurosaurus
  66. Amygdalodon
  67. Anabisetia
  68. Anasazisaurus
  69. Anatosaurus – junior synonym of Edmontosaurus
  70. Anatotitan
  71. Anchiceratops
  72. Anchiornis
  73. Anchisaurus
  74. Andesaurus
  75. Angaturama – probable junior synonym of Irritator
  76. “Angloposeidon” – nomen nudum
  77. Angolatitan
  78. Angulomastacator
  79. Aniksosaurus
  80. Animantarx
  81. Ankistrodon – actually a proterosuchid archosauriform
  82. Ankylosaurus
  83. Anodontosaurus – junior synonym of Euoplocephalus or Dyoplosaurus
  84. Anoplosaurus
  85. Anserimimus
  86. Antarctopelta
  87. Antarctosaurus
  88. Anthodon – actually a pareiasaur
  89. Antrodemus – possibly a junior synonym of Allosaurus
  90. Apatodon – possibly a junior synonym of Allosaurus
  91. Apatosaurus – popularly known as Brontosaurus
  92. Appalachiosaurus
  93. Aragosaurus
  94. Aralosaurus
  95. “Araucanoraptor” – nomen nudum; Neuquenraptor
  96. Archaeoceratops
  97. Archaeodontosaurus
  98. Archaeopteryx
  99. “Archaeoraptor” – now known as the bird Yanornis and the dromaeosaur Microraptor
  100. Archaeornis – junior synonym of the bird Archaeopteryx
  101. Archaeornithoides
  102. Archaeornithomimus
  103. Archaeovolans – junior synonym of the bird Yanornis
  104. Arctosaurus – actually some sort of non-dinosaurian reptile
  105. Arcusaurus
  106. Arenysaurus
  107. Argentinosaurus
  108. Argyrosaurus
  109. Aristosaurus – junior synonym of Massospondylus
  110. Aristosuchus
  111. Arizonasaurus – actually a rauisuchian
  112. “Arkanosaurus” – variant spelling of “Arkansaurus”
  113. “Arkansaurus” – nomen nudum
  114. Arkharavia
  115. Arrhinoceratops
  116. Arstanosaurus
  117. Asiaceratops
  118. Asiamericana
  119. Asiatosaurus
  120. Astrodon
  121. Astrodonius – junior synonym of Astrodon
  122. Astrodontaurus – junior synonym of Astrodon
  123. Asylosaurus
  124. Atacamatitan
  125. Atlantosaurus – possible junior synonym of Apatosaurus or Camarasaurus
  126. Atlasaurus
  127. Atlascopcosaurus
  128. Atrociraptor
  129. Atsinganosaurus
  130. Aublysodon
  131. “Augustia” – preoccupied name, now known as Agustinia
  132. Auroraceratops
  133. Australodocus
  134. Australovenator
  135. Austrocheirus
  136. Austroraptor
  137. Austrosaurus
  138. Avaceratops
  139. “Avalonia” – preoccupied name, now known as Avalonianus
  140. Avalonianus – actually a non-dinosaurian archosaur
  141. Aviatyrannis
  142. Avimimus
  143. Avipes – probably a non-dinosaurian dinosauromorph
  144. Avisaurus – actually an enantiornithine bird
  145. Azendohsaurus – a non-dinosaurian archosauromorph
  146. Bactrosaurus
  147. Bagaceratops
  148. Bagaraatan
  149. Bahariasaurus
  150. Bainoceratops
  151. “Bakesaurus” – nomen nudum
  152. Balaur
  153. Balochisaurus
  154. Bambiraptor
  155. Banji
  156. Baotianmansaurus
  157. Barapasaurus
  158. Barilium
  159. Barosaurus
  160. Barsboldia
  161. Baryonyx
  162. “Bashunosaurus” – nomen nudum
  163. Basutodon – actually a non-dinosaurian archosaur
  164. Bathygnathus – actually a pelycosaur
  165. Baurutitan
  166. “Bayosaurus” – nomen nudum
  167. Becklespinax
  168. “Beelemodon” – nomen nudum
  169. Beipiaosaurus
  170. Beishanlong
  171. Bellusaurus
  172. Belodon – actually a phytosaur
  173. Berberosaurus
  174. Betasuchus
  175. Bienosaurus
  176. Bihariosaurus
  177. “Bilbeyhallorum” – nomen nudum; Cedarpelta
  178. Bissektipelta
  179. Bistahieversor
  180. “Blancocerosaurus” – nomen nudum, probably Brachiosaurus or Giraffatitan
  181. Blasisaurus
  182. Blikanasaurus
  183. Bolong
  184. Bonapartenykus
  185. Bonatitan
  186. Bonitasaura
  187. Borealosaurus
  188. Borogovia
  189. Bothriospondylus
  190. Brachiosaurus
  191. Brachyceratops
  192. Brachylophosaurus
  193. Brachypodosaurus
  194. Brachyrophus – junior synonym of Camptosaurus
  195. Brachytaenius – actually some sort of non-dinosaurian reptile, possibly the same as Dakosaurus
  196. Brachytrachelopan
  197. Bradycneme
  198. Brasileosaurus – actually a non-dinosaurian archosaur
  199. Breviceratops
  200. Brohisaurus
  201. Brontomerus
  202. “Brontoraptor” – nomen nudum
  203. Brontosaurus – junior synonym of Apatosaurus
  204. Bruhathkayosaurus
  205. Bugenasaura – junior synonym of Thescelosaurus
  206. Buitreraptor
  207. “Byranjaffia” – nomen nudum; Byronosaurus
  208. Byronosaurus
  209. Camarasaurus skull.Caenagnathasia
  210. Caenagnathus – probable junior synonym of Chirostenotes
  211. Calamosaurus
  212. Calamospondylus Fox, 1866
  213. “Calamospondylus” Lydekker, 1889 – preoccupied name, now known as Calamosaurus
  214. Callovosaurus
  215. Camarasaurus
  216. Camelotia
  217. Camposaurus
  218. “Camptonotus” – preoccupied name, now known as Camptosaurus
  219. Camptosaurus
  220. “Campylodon” – preoccupied name, now known as Campylodoniscus
  221. Campylodoniscus
  222. “Capitalsaurus” – nomen nudum
  223. Carcharodontosaurus
  224. Cardiodon
  225. “Carnosaurus” – nomen nudum, probably a typographical error for “carnosaur”
  226. Carnotaurus
  227. Caseosaurus
  228. Cathartesaura
  229. Cathetosaurus – junior synonym of Camarasaurus
  230. Caudipteryx
  231. Caudocoelus – junior synonym of Teinurosaurus
  232. Caulodon – junior synonym of Camarasaurus
  233. Cedarosaurus
  234. Cedarpelta
  235. Cedrorestes
  236. Centemodon – actually a phytosaur
  237. Centrosaurus
  238. Cerasinops
  239. Ceratonykus
  240. Ceratops
  241. Ceratosaurus
  242. Cetiosauriscus
  243. Cetiosaurus
  244. Changchunsaurus
  245. “Changdusaurus” – nomen nudum
  246. “Changtusaurus” – variant spelling of “Changdusaurus”
  247. Chaoyangosaurus – misspelling of Chaoyangsaurus
  248. Chaoyangsaurus
  249. Charonosaurus
  250. Chasmosaurus
  251. Chassternbergia – junior synonym of Edmontonia
  252. Chebsaurus
  253. Cheneosaurus – junior synonym of Hypacrosaurus
  254. Chialingosaurus
  255. Chiayusaurus
  256. Chienkosaurus – actually a chimera of crocodilian and theropod (Szechuanosaurus) remains
  257. “Chihuahuasaurus” – nomen nudum; Sonorasaurus
  258. Chilantaisaurus
  259. Chindesaurus
  260. Chingkankousaurus
  261. Chirostenotes
  262. Chondrosteosaurus
  263. Chondrosteus – misspelling of Chondrosteosaurus
  264. Chromogisaurus
  265. Chuandongocoelurus
  266. Chuanjiesaurus
  267. Chubutisaurus
  268. Chungkingosaurus
  269. Chuxiongosaurus
  270. “Cinizasaurus” – nomen nudum
  271. Cionodon
  272. Citipati
  273. Cladeiodon – actually a non-dinosaurian rauisuchian (Teratosaurus)
  274. Claorhynchus – possibly Triceratops
  275. Claosaurus
  276. Clarencea – actually a sphenosuchian (Sphenosuchus)
  277. Clasmodosaurus
  278. Clepsysaurus – actually a non-dinosaurian archosaur, except for C. fraserianus, which is part of the taxonomy of
    Palaeosaurus
  279. “Clevelanotyrannus” – nomen nudum; Nanotyrannus
  280. Coahuilaceratops
  281. Coelophysis
  282. “Coelosaurus” – preoccupied name, now known as Ornithomimus and Archaeornithomimus.
  283. Coeluroides
  284. Coelurosauravus – actually an avicephalan diapsid
  285. “Coelurosaurus” – nomen nudum, probably a typographical error for “coelurosaur”
  286. Coelurus
  287. Colepiocephale
  288. Colonosaurus – junior synonym of the bird Ichthyornis dispar
  289. “Coloradia” – preoccupied name, now known as Coloradisaurus
  290. Coloradisaurus
  291. “Colossosaurus” – nomen nudum; Pelorosaurus
  292. “Comanchesaurus” – nomen nudum
  293. Compsognathus
  294. Compsosuchus
  295. Concavenator
  296. Conchoraptor
  297. Condorraptor
  298. Corythosaurus
  299. Craspedodon
  300. Crataeomus – junior synonym of Struthiosaurus
  301. Craterosaurus
  302. Creosaurus – junior synonym of Allosaurus
  303. Crichtonsaurus
  304. Cristatusaurus
  305. Crosbysaurus – actually a non-dinosaurian archosauriform
  306. Cruxicheiros
  307. Cryolophosaurus
  308. Cryptodraco – junior synonym (unneeded replacement name) of Cryptosaurus
  309. “Cryptoraptor” – nomen nudum
  310. Cryptosaurus
  311. Cryptovolans – junior synonym of Microraptor
  312. Cumnoria
  313. “Cylindricodon” – preoccupied name, now known as Hylaeosaurus
  314. Cystosaurus – actually a crocodilian which through a typographical error was confused with Cryptosaurus
  315. Deinonychus skeleton.Daanosaurus
  316. Dacentrurus
  317. “Dachongosaurus” – nomen nudum
  318. “Dachungosaurus” – variant spelling of “Dachongosaurus”
  319. Daemonosaurus
  320. Dakosaurus – actually a metriorhynchid crocodilian
  321. Dakotadon
  322. “Damalasaurus” – nomen nudum
  323. Dandakosaurus
  324. Danubiosaurus – junior synonym of Struthiosaurus
  325. “Daptosaurus” – nomen nudum; early manuscript name for Deinonychus
  326. Dashanpusaurus
  327. Daspletosaurus
  328. Dasygnathoides – actually a non-dinosaurian archosaur, junior synonym of Ornithosuchus
  329. “Dasygnathus” – preoccupied name, now known as Dasygnathoides
  330. Datousaurus
  331. Daxiatitan
  332. Deinocheirus
  333. Deinodon – possibly Gorgosaurus
  334. Deinonychus
  335. Delapparentia
  336. Deltadromeus
  337. Demandasaurus
  338. Denversaurus – junior synonym of Edmontonia
  339. Deuterosaurus – actually a therapsid
  340. Diabloceratops
  341. Diamantinasaurus
  342. Dianchungosaurus – actually a crocodilian
  343. “Diceratops” – preoccupied name, now known as Nedoceratops
  344. Diceratus – junior synonym of Nedoceratops
  345. Diclonius
  346. Dicraeosaurus
  347. Didanodon – possibly a junior synonym of Lambeosaurus
  348. Dilong
  349. Dilophosaurus
  350. Dimodosaurus – junior synonym of Plateosaurus
  351. Dinheirosaurus
  352. Dinodocus
  353. “Dinosaurus” – preoccupied name, now a junior synonym of Plateosaurus
  354. Dinotyrannus – junior synonym of Tyrannosaurus
  355. Diplodocus
  356. Diplotomodon
  357. Diracodon – junior synonym of Stegosaurus
  358. Dolichosuchus
  359. Dollodon
  360. “Domeykosaurus” – nomen nudum
  361. Dongbeititan
  362. Dongyangosaurus
  363. Doratodon – actually a crocodilian
  364. Doryphorosaurus – junior synonym (unneeded replacement name) of Kentrosaurus
  365. Draconyx
  366. Dracopelta
  367. Dracorex – possibly a juvenile Pachycephalosaurus
  368. Dracovenator
  369. Dravidosaurus – actually a plesiosaurian
  370. Drinker
  371. Dromaeosaurus
  372. Dromiceiomimus
  373. Dromicosaurus – junior synonym of Massospondylus
  374. Drusilasaura
  375. Dryosaurus
  376. Dryptosauroides
  377. Dryptosaurus
  378. Dubreuillosaurus
  379. Duriatitan
  380. Duriavenator
  381. Dynamosaurus – junior synonym of Tyrannosaurus
  382. Dyoplosaurus
  383. Dysalotosaurus – junior synonym of Dryosaurus
  384. Dysganus
  385. Dyslocosaurus
  386. Dystrophaeus
  387. Dystylosaurus – junior synonym of Supersaurus
  388. Echinodon
  389. Edmarka
  390. Edmontonia
  391. Edmontosaurus
  392. Efraasia
  393. Einiosaurus
  394. Ekrixinatosaurus
  395. Elachistosuchus – a rhynchocephalian
  396. Elaphrosaurus
  397. Elmisaurus
  398. Elopteryx
  399. Elosaurus – junior synonym of Apatosaurus
  400. Elrhazosaurus
  401. “Elvisaurus” – nomen nudum; Cryolophosaurus
  402. Emausaurus
  403. Embasaurus
  404. Empaterias – misspelling of Epanterias
  405. Enigmosaurus
  406. Eobrontosaurus
  407. Eocarcharia
  408. Eoceratops – junior synonym of Chasmosaurus
  409. Eocursor
  410. Eodromaeus
  411. “Eohadrosaurus” – nomen nudum; Eolambia
  412. Eolambia
  413. Eolosaurus – junior synonym of Aeolosaurus
  414. Eomamenchisaurus
  415. Eoraptor
  416. Eotriceratops
  417. Eotyrannus
  418. Epachthosaurus
  419. Epanterias – may be Allosaurus
  420. “Ephoenosaurus” – nomen nudum; Machimosaurus (a crocodilian)
  421. Epicampodon – actually a proterosuchid archosauriform
  422. Epichirostenotes
  423. Epidendrosaurus
  424. Epidexipteryx
  425. Equijubus
  426. Erectopus
  427. Erliansaurus
  428. Erlicosaurus – misspelling of Erlikosaurus
  429. Erlikosaurus
  430. Eshanosaurus
  431. “Euacanthus” – nomen nudum; junior synonym of Polacanthus
  432. Eucamerotus
  433. Eucentrosaurus – junior synonym (unneeded replacement name) of Centrosaurus
  434. Eucercosaurus – possibly Anoplosaurus
  435. Eucnemesaurus
  436. Eucoelophysis – actually a non-dinosaurian dinosauromorph
  437. “Eugongbusaurus” – nomen nudum
  438. Euhelopus
  439. Euoplocephalus
  440. Eupodosaurus – a nothosaur synonymous with Lariosaurus
  441. “Eureodon” – nomen nudum; Tenontosaurus
  442. Eurolimnornis – possibly a bird
  443. Euronychodon
  444. Europasaurus
  445. Euskelosaurus
  446. Eustreptospondylus
  447. Fabrosaurus – possibly Lesothosaurus
  448. Falcarius
  449. “Fenestrosaurus” – nomen nudum; Oviraptor
  450. Ferganasaurus
  451. Ferganocephale
  452. Frenguellisaurus – junior synonym of Herrerasaurus
  453. Fruitadens
  454. Fukuisaurus
  455. Fukuititan
  456. Fulengia
  457. Fulgurotherium
  458. “Fusinasus” – nomen nudum; Eotyrannus
  459. Fusuisaurus
  460. “Futabasaurus” – nomen nudum; not to be confused with the formally-named plesiosaur Futabasaurus
  461. Futalognkosaurus
  462. “Futalongkosaurus” – variant spelling of Futalognkosaurus
  463. “Gadolosaurus” – nomen nudum
  464. Galesaurus – actually a therapsid
  465. Gallimimus
  466. Galtonia – actually a pseudosuchian; possibly a junior synonym of Revueltosaurus
  467. Galveosaurus
  468. Galvesaurus – junior synonym of Galveosaurus
  469. “Gansutitan” – nomen nudum; Daxiatitan
  470. Gargoyleosaurus
  471. Garudimimus
  472. Gasosaurus
  473. Gasparinisaura
  474. Gastonia
  475. “Gavinosaurus” – nomen nudum; Eotyrannus
  476. Geminiraptor
  477. Genusaurus
  478. Genyodectes
  479. Geranosaurus
  480. Giganotosaurus
  481. Gigantoraptor
  482. Gigantosaurus Seeley, 1869
  483. “Gigantosaurus” E. Fraas, 1908 – preoccupied name, now known as Tornieria, Malawisaurus, and Janenschia
  484. Gigantoscelus – junior synonym of Euskelosaurus
  485. Gigantspinosaurus
  486. Gilmoreosaurus
  487. “Ginnareemimus” – nomen nudum; Kinnareemimus
  488. Giraffatitan
  489. Glacialisaurus
  490. Glishades
  491. Glyptodontopelta
  492. Gobipteryx – actually an enantiornithine bird
  493. Gobisaurus
  494. Gobititan
  495. “Godzillasaurus” – nomen nudum; Gojirasaurus
  496. Gojirasaurus
  497. Gondwanatitan
  498. Gongbusaurus
  499. Gongxianosaurus
  500. Gorgosaurus
  501. Goyocephale
  502. Graciliceratops
  503. Graciliraptor
  504. Gracilisuchus – actually a non-dinosaurian archosaur
  505. “Gravisaurus” – nomen nudum; Lurdusaurus
  506. Gravitholus
  507. Gresslyosaurus – junior synonym of Plateosaurus
  508. Griphornis – junior synonym of the bird Archaeopteryx
  509. Griphosaurus – junior synonym of the bird Archaeopteryx
  510. “Gripposaurus” – nomen nudum; “Gyposaurus” sinensis
  511. Gryphoceratops
  512. “Gryphognathus” – nomen nudum; Gryphoceratops
  513. Gryponyx
  514. Gryposaurus
  515. Guaibasaurus
  516. Guanlong
  517. Gwyneddosaurus – a tanystrophid
  518. Gyposaurus – junior synonym of Massospondylus
  519. “Hadrosauravus” – nomen nudum; junior synonym of Gryposaurus
  520. Hadrosaurus
  521. Hagryphus
  522. Hallopus – actually a crocodilian
  523. Halticosaurus
  524. Hanssuesia
  525. “Hanwulosaurus” – nomen nudum
  526. Haplocanthosaurus
  527. “Haplocanthus” – preoccupied name, now known as Haplocanthosaurus
  528. Haplocheirus
  529. Harpymimus
  530. Haya
  531. Hecatasaurus – junior synonym of Telmatosaurus
  532. “Heilongjiangosaurus” – nomen nudum
  533. Heishansaurus
  534. Helioceratops
  535. “Helopus” – preoccupied name, now known as Euhelopus
  536. Heptasteornis
  537. Herbstosaurus – actually a pterosaur
  538. Herrerasaurus
  539. Hesperonychus
  540. Hesperosaurus
  541. Heterodontosaurus
  542. Heterosaurus – junior synonym of Iguanodon
  543. Hexinlusaurus
  544. Heyuannia
  545. Hierosaurus – junior synonym of Nodosaurus
  546. Hikanodon – junior synonym of Iguanodon
  547. “Hironosaurus” – nomen nudum
  548. “Hisanohamasaurus” – nomen nudum
  549. Histriasaurus
  550. Homalocephale
  551. “Honghesaurus” – nomen nudum; Yandusaurus
  552. Hongshanosaurus
  553. Hoplitosaurus
  554. Hoplosaurus – junior synonym of Struthiosaurus
  555. Hortalotarsus – junior synonym of Massospondylus
  556. Huabeisaurus
  557. Huanghetitan
  558. Huaxiagnathus
  559. “Huaxiasaurus” – nomen nudum; Huaxiagnathus
  560. Huayangosaurus
  561. Hudiesaurus
  562. Huehuecanauhtlus
  563. Hulsanpes – possibly a bird
  564. Hungarosaurus
  565. Hylaeosaurus
  566. Hylosaurus – junior synonym of Hylaeosaurus
  567. Hypacrosaurus
  568. “Hypselorhachis” – nomen nudum
  569. Hypselosaurus
  570. Hypselospinus
  571. Hypsibema
  572. Hypsilophodon
  573. Hypsirophus – probable junior synonym of Stegosaurus
  574. “Ichabodcraniosaurus” – nomen nudum; probably Velociraptor
  575. Ignavusaurus
  576. Iguanacolossus
  577. Iguanodon
  578. “Iguanoides” – nomen nudum; Iguanodon
  579. “Iguanosaurus” – nomen nudum; Iguanodon
  580. Iliosuchus
  581. Ilokelesia
  582. Incisivosaurus
  583. Indosuchus
  584. “Ingenia” – preoccupied name, has not yet been renamed
  585. Inosaurus
  586. Irritator
  587. Isanosaurus
  588. Ischisaurus – junior synonym of Herrerasaurus
  589. “Ischyrosaurus” – preoccupied name, has not yet been renamed
  590. Isisaurus
  591. “Issasaurus” – nomen nudum; Dicraeosaurus
  592. Itemirus
  593. Iuticosaurus
  594. Jainosaurus
  595. Jaklapallisaurus
  596. Janenschia
  597. Jaxartosaurus
  598. Jeholornis – actually a bird
  599. Jeholosaurus
  600. Jenghizkhan – junior synonym of Tarbosaurus
  601. “Jensenosaurus” – nomen nudum; Supersaurus
  602. Jeyawati
  603. “Jiangjunmiaosaurus” – nomen nudum; Monolophosaurus
  604. Jiangjunosaurus
  605. Jiangshanosaurus
  606. Jingshanosaurus
  607. Jintasaurus
  608. Jinzhousaurus
  609. Jiutaisaurus
  610. Jixiangornis – actually a bird
  611. Jobaria
  612. Jubbulpuria
  613. Jurapteryx – junior synonym of the bird Archaeopteryx
  614. “Jurassosaurus” – nomen nudum; Tianchisaurus
  615. Juratyrant
  616. Juravenator
  617. “Kagasaurus” – nomen nudum
  618. Kaijiangosaurus
  619. Kakuru
  620. Kangnasaurus
  621. Karongasaurus
  622. “Katsuyamasaurus” – nomen nudum
  623. Kayentavenator
  624. Kelmayisaurus
  625. Kemkemia
  626. Kentrosaurus
  627. Kerberosaurus
  628. Khaan
  629. “Khateranisaurus” – misspelling of “Khetranisaurus”
  630. Khetranisaurus
  631. Kileskus
  632. Kinnareemimus
  633. “Kitadanisaurus” – nomen nudum; Fukuiraptor
  634. “Kittysaurus” – nomen nudum; Eotyrannus
  635. Klamelisaurus
  636. Kol
  637. Koparion
  638. Koreaceratops
  639. Koreanosaurus Huh et al., 2011
  640. “Koreanosaurus” Kim, 1979 – nomen nudum; name later used formally for a genus of ornithopod
  641. “Koreasaurus” – nomen nudum; probably an alternate spelling of “Koreanosaurus”
  642. Kosmoceratops
  643. Kotasaurus
  644. Koutalisaurus
  645. Kritosaurus
  646. Kryptops
  647. Krzyzanowskisaurus – probably a pseudosuchian (?Revueltosaurus)
  648. Kukufeldia
  649. Kulceratops
  650. Kunmingosaurus – may be a nomen nudum
  651. Kuszholia – probably a bird
  652. Labocania
  653. Labrosaurus – junior synonym of Allosaurus
  654. “Laelaps” – preoccupied name, now known as Dryptosaurus
  655. Laevisuchus
  656. Lagerpeton – actually a non-dinosaurian dinosauromorph
  657. Lagosuchus – actually a non-dinosaurian dinosauromorph
  658. Lamaceratops
  659. Lambeosaurus
  660. Lametasaurus
  661. Lamplughsaura
  662. Lanasaurus
  663. “Lancangjiangosaurus” – variant spelling of “Lancanjiangosaurus”
  664. “Lancangosaurus” – variant spelling of “Lancanjiangosaurus”
  665. “Lancanjiangosaurus” – nomen nudum
  666. Lanzhousaurus
  667. Laornis – actually a bird
  668. Laosaurus
  669. Laplatasaurus
  670. Lapparentosaurus
  671. Leaellynasaura
  672. Leipsanosaurus – junior synonym of Struthiosaurus
  673. “Lengosaurus” – nomen nudum; Eotyrannus
  674. Leonerasaurus
  675. Leptoceratops
  676. Leptospondylus – junior synonym of Massospondylus
  677. Leshansaurus
  678. Lesothosaurus
  679. Lessemsaurus
  680. Levnesovia
  681. Lewisuchus – actually a non-dinosaurian dinosauromorph
  682. Lexovisaurus
  683. Liaoceratops
  684. Liaoningosaurus
  685. “Liassaurus” – nomen nudum
  686. Libycosaurus – actually an anthracothere mammal
  687. Ligabueino
  688. Ligabuesaurus
  689. “Ligomasaurus” – nomen nudum, probably Brachiosaurus or Giraffatitan
  690. “Likhoelesaurus” – nomen nudum; possibly non-dinosaurian
  691. Liliensternus
  692. Limaysaurus
  693. “Limnornis” – preoccupied name, now known as the birds Eurolimnornis and Palaeocursornis
  694. “Limnosaurus” – preoccupied name, now known as Telmatosaurus
  695. Limusaurus
  696. Linhenykus
  697. Linheraptor
  698. Linhevenator
  699. Lirainosaurus
  700. Lisboasaurus – actually a crocodilian
  701. Liubangosaurus
  702. Loncosaurus
  703. Longisquama – actually some sort of non-dinosaurian reptile
  704. Longosaurus – junior synonym of Coelophysis
  705. Lophorhothon
  706. Lophostropheus
  707. Loricatosaurus
  708. Loricosaurus – possible junior synonym of Neuquensaurus
  709. Losillasaurus
  710. Lourinhanosaurus
  711. Lourinhasaurus
  712. Luanchuanraptor
  713. “Luanpingosaurus” – nomen nudum; Psittacosaurus
  714. Lucianosaurus – actually a non-dinosaurian archosauriform
  715. Lufengocephalus – junior synonym of Lufengosaurus
  716. Lufengosaurus
  717. Lukousaurus
  718. Luoyanggia
  719. Lurdusaurus
  720. Lusitanosaurus
  721. Lusotitan
  722. Lycorhinus
  723. Macelognathus – actually a sphenosuchian crocodilian
  724. Machairasaurus
  725. Macrodontophion
  726. Macrogryphosaurus
  727. Macrophalangia – junior synonym of Chirostenotes
  728. “Macroscelosaurus” – nomen nudum; probable junior synonym of Tanystropheus
  729. Macrurosaurus
  730. “Madsenius” – nomen nudum
  731. Magnirostris
  732. Magnosaurus
  733. “Magulodon” – nomen nudum
  734. Magyarosaurus
  735. Mahakala
  736. Maiasaura
  737. Majungasaurus
  738. Majungatholus – probable junior synonym of Majungasaurus
  739. Malarguesaurus
  740. Malawisaurus
  741. Maleevosaurus – junior synonym of Tarbosaurus
  742. Maleevus
  743. “Manidens” – nomen nudum
  744. Mandschurosaurus
  745. Manospondylus – synonym of Tyrannosaurus
  746. Mantellisaurus
  747. Mapusaurus
  748. Marasuchus – actually a non-dinosaurian dinosauromorph
  749. Marisaurus
  750. Marmarospondylus – probable junior synonym of Bothriospondylus
  751. Marshosaurus
  752. Masiakasaurus
  753. Massospondylus
  754. Maxakalisaurus
  755. Medusaceratops
  756. “Megacervixosaurus” – nomen nudum
  757. “Megadactylus” – preoccupied name, now known as Anchisaurus
  758. “Megadontosaurus” – nomen nudum; Microvenator
  759. Megalosaurus
  760. Megapnosaurus
  761. Megaraptor
  762. Mei
  763. Melanorosaurus
  764. Mendozasaurus
  765. “Merosaurus” – nomen nudum
  766. Metriacanthosaurus
  767. “Microcephale” – nomen nudum
  768. “Microceratops” – preoccupied name, now known as Microceratus
  769. Microceratus
  770. Microcoelus – junior synonym of Saltasaurus
  771. “Microdontosaurus” – nomen nudum
  772. Microhadrosaurus
  773. Micropachycephalosaurus
  774. Microraptor
  775. Microsaurops – junior synonym of Saltasaurus
  776. Microvenator
  777. “Mifunesaurus” – nomen nudum
  778. Minmi
  779. Minotaurasaurus
  780. Miragaia
  781. Mirischia
  782. “Moabosaurus” – nomen nudum
  783. Mochlodon
  784. “Mohammadisaurus” – nomen nudum; Tornieria
  785. Mojoceratops
  786. Monkonosaurus
  787. Monoclonius
  788. Monolophosaurus
  789. “Mononychus” – preoccupied name, now known as Mononykus
  790. Mononykus
  791. Montanoceratops
  792. Morinosaurus
  793. Morosaurus – junior synonym of Camarasaurus
  794. “Moshisaurus” – nomen nudum; ?Mamenchisaurus
  795. “Mtapaiasaurus” – nomen nudum, probably Brachiosaurus or Giraffatitan
  796. “Mtotosaurus” – nomen nudum; Dicraeosaurus
  797. Mussaurus
  798. Muttaburrasaurus
  799. Muyelensaurus
  800. Mymoorapelta
  801. Naashoibitosaurus
  802. Nambalia
  803. Nanningosaurus
  804. Nanosaurus
  805. Nanotyrannosaurus – a misspelling of Nanotyrannus
  806. Nanotyrannus – possibly a juvenile Tyrannosaurus or other tyrannosaurid
  807. Nanshiungosaurus
  808. Nanyangosaurus
  809. Narambuenatitan
  810. “Nectosaurus” – preoccupied name, now known as Kritosaurus
  811. Nedcolbertia
  812. Nedoceratops
  813. Neimongosaurus
  814. “Nemegtia” – preoccupied name, now known as Nemegtomaia
  815. Nemegtomaia
  816. Nemegtosaurus
  817. “Neosaurus” – preoccupied name, now known as Parrosaurus (possible junior synonym of Hypsibema)
  818. Neosodon
  819. Neovenator
  820. Neuquenraptor
  821. Neuquensaurus
  822. “Newtonsaurus” – nomen nudum
  823. “Ngexisaurus” – nomen nudum
  824. Nigersaurus
  825. “Ninghsiasaurus” – nomen nudum; Pinacosaurus
  826. Niobrarasaurus
  827. Nipponosaurus
  828. Noasaurus
  829. Nodocephalosaurus
  830. Nodosaurus
  831. Nomingia
  832. Nothronychus
  833. Notoceratops
  834. Notohypsilophodon
  835. “Nouerosaurus” – variant spelling of Nurosaurus
  836. Nqwebasaurus
  837. “Nteregosaurus” – nomen nudum; Janenschia
  838. “Nuoerosaurus” – variant spelling of Nurosaurus
  839. “Nuoersaurus” – variant spelling of Nurosaurus
  840. “Nurosaurus” – nomen nudum
  841. Nuthetes
  842. “Nyasasaurus” – nomen nudum; possibly non-dinosaurian
  843. “Nyororosaurus” – nomen nudum; Dicraeosaurus
  844. Ohmdenosaurus
  845. Ojoceratops
  846. Ojoraptorsaurus
  847. Oligosaurus – junior synonym of Rhabdodon
  848. Olorotitan
  849. Omeisaurus
  850. Omnivoropteryx – probably a bird
  851. “Omosaurus” – preoccupied name, now known as Dacentrurus
  852. Onychosaurus – synonym of Rhabdodon, or a dubious ankylosaurian
  853. Opisthocoelicaudia
  854. Oplosaurus
  855. “Orcomimus” – nomen nudum
  856. Orinosaurus – junior synonym (unneeded replacement name) of Orosaurus
  857. Orkoraptor
  858. Ornatotholus
  859. Ornithodesmus
  860. “Ornithoides” – nomen nudum; Saurornithoides
  861. Ornitholestes
  862. Ornithomimoides
  863. Ornithomimus
  864. Ornithopsis
  865. Ornithosuchus – actually a non-dinosaurian archosaur
  866. Ornithotarsus – possible junior synonym of Hadrosaurus
  867. Orodromeus
  868. Orosaurus – possible junior synonym of Euskelosaurus
  869. Orthogoniosaurus
  870. Orthomerus
  871. Oryctodromeus
  872. “Oshanosaurus” – nomen nudum
  873. Osmakasaurus
  874. Othnielia
  875. Othnielosaurus
  876. “Otogosaurus” – nomen nudum
  877. Ouranosaurus
  878. Oviraptor
  879. “Ovoraptor” – nomen nudum; Velociraptor
  880. Owenodon
  881. Oxalaia
  882. Ozraptor
  883. Pachycephalosaurus
  884. Pachyrhinosaurus
  885. Pachysauriscus – probable junior synonym of Plateosaurus
  886. Pachysaurops – probable junior synonym of Plateosaurus
  887. “Pachysaurus” – preoccupied name, now known as Pachysauriscus; probable junior synonym of Plateosaurus
  888. Pachyspondylus – probable junior synonym of Massospondylus
  889. Pakisaurus
  890. Palaeoctonus – actually a phytosaur
  891. Palaeocursornis – possibly a bird
  892. “Palaeolimnornis” – nomen nudum; Palaeocursornis, probable bird
  893. Palaeopteryx – possibly a bird
  894. Palaeosauriscus – junior synonym of Paleosaurus
  895. “Palaeosaurus” Riley & Stutchbury, 1836 – preoccupied name, now known as Paleosaurus
  896. “Palaeosaurus” Fitzinger, 1840 – preoccupied name, now known as Sphenosaurus, a non-dinosaurian procolophonid
  897. Palaeoscincus
  898. Paleosaurus – actually a non-dinosaurian archosaur
  899. Paludititan
  900. Paluxysaurus
  901. Pampadromaeus
  902. Pamparaptor
  903. Panamericansaurus
  904. Panoplosaurus
  905. Panphagia
  906. Pantydraco
  907. Paralititan
  908. Paranthodon
  909. Pararhabdodon
  910. Parasaurolophus
  911. Pareiasaurus – actually a pareiasaur
  912. “Parhabdodon” – nomen nudum; misspelling of Pararhabdodon
  913. Parksosaurus
  914. Paronychodon
  915. Parrosaurus – possible junior synonym of Hypsibema
  916. Parvicursor
  917. Patagonykus
  918. Patagosaurus
  919. “Patricosaurus” – actually a chimera of various non-dinosaurian reptiles
  920. Pawpawsaurus
  921. Pectinodon – junior synonym of Troodon
  922. Pedopenna
  923. Peishansaurus
  924. Pekinosaurus – actually a pseudosuchian; possibly a junior synonym of Revueltosaurus
  925. Pelecanimimus
  926. Pellegrinisaurus
  927. Peloroplites
  928. Pelorosaurus
  929. “Peltosaurus” – preoccupied name, now known as Sauropelta
  930. Penelopognathus
  931. Pentaceratops
  932. Petrobrasaurus
  933. Phaedrolosaurus
  934. Phuwiangosaurus
  935. Phyllodon
  936. Piatnitzkysaurus
  937. Picrodon – junior synonym of Avalonianus
  938. Pinacosaurus
  939. Pisanosaurus
  940. Pitekunsaurus
  941. Piveteausaurus
  942. Planicoxa
  943. Plateosauravus
  944. Plateosaurus
  945. Platyceratops
  946. Pleurocoelus – possibly Astrodon
  947. Pleuropeltus – junior synonym of Struthiosaurus
  948. Pneumatoarthrus – actually a turtle
  949. Pneumatoraptor
  950. Podokesaurus
  951. Poekilopleuron
  952. Polacanthoides – junior synonym of Hylaeosaurus
  953. Polacanthus
  954. Polyodontosaurus – junior synonym of Troodon
  955. Polyonax
  956. Ponerosteus
  957. Poposaurus – actually a non-dinosaurian archosaur
  958. Pradhania
  959. Prenocephale
  960. Prenoceratops
  961. Priconodon
  962. Priodontognathus
  963. Probactrosaurus
  964. Proceratops – junior synonym (unneeded replacement name) of Ceratops
  965. Proceratosaurus
  966. Procerosaurus von Huene, 1902 – actually a prolacertiform archosauromorph
  967. “Procerosaurus” Fritsch, 1905 – preoccupied name, now known as Ponerosteus
  968. Procheneosaurus – junior synonym of Lambeosaurus
  969. Procompsognathus
  970. Prodeinodon
  971. “Proiguanodon” – nomen nudum; Iguanodon
  972. Propanoplosaurus
  973. Proplanicoxa
  974. Prosaurolophus
  975. Protarchaeopteryx
  976. Protecovasaurus – actually a non-dinosaurian archosauriform
  977. Protiguanodon – junior synonym of Psittacosaurus
  978. Protoavis – described as a bird, probably a chimera including theropod dinosaur bones
  979. Protoceratops
  980. Protognathosaurus
  981. “Protognathus” – preoccupied name, now known as Protognathosaurus
  982. Protohadros
  983. Protorosaurus von Meyer, 1830 – actually a non-dinosaurian reptile
  984. “Protorosaurus” Lambe, 1914 – preoccupied name, now known as Chasmosaurus
  985. “Protrachodon” – nomen nudum; Orthomerus
  986. “Proyandusaurus” – nomen nudum; Hexinlusaurus.
  987. Pseudolagosuchus – actually a non-dinosaurian dinosauromorph
  988. Psittacosaurus
  989. Pteropelyx
  990. Pterospondylus
  991. Puertasaurus
  992. Pukyongosaurus
  993. Pycnonemosaurus
  994. Pyroraptor
  995. Qantassaurus skeleton.Qantassaurus
  996. Qiaowanlong
  997. Qinlingosaurus
  998. Qingxiusaurus
  999. Qiupalong
  1000. Quaesitosaurus
  1001. Quilmesaurus
  1002. Rachitrema – possibly an ichthyosaur
  1003. Rahiolisaurus
  1004. “Rahona” – preoccupied name, now known as Rahonavis
  1005. Rahonavis – possibly a bird
  1006. Rajasaurus
  1007. Rapator
  1008. Rapetosaurus
  1009. Raptorex
  1010. Ratchasimasaurus
  1011. Rayososaurus
  1012. Razanandrongobe – may be a theropod or crocodylomorph
  1013. Rebbachisaurus
  1014. Regnosaurus
  1015. “Revueltoraptor” – nomen nudum; junior synonym of Gojirasaurus
  1016. Revueltosaurus – actually a pseudosuchian
  1017. Rhabdodon
  1018. Rhadinosaurus – may be non-dinosaurian, possibly crocodilian
  1019. Rhodanosaurus – junior synonym of Struthiosaurus
  1020. Rhoetosaurus
  1021. Rhopalodon – actually a synapsid
  1022. Ricardoestesia – intended but unofficial spelling of Richardoestesia
  1023. Richardoestesia
  1024. Rileyasuchus – a chimera of phytosaur and Thecodontosaurus remains
  1025. Rinchenia
  1026. Rinconsaurus
  1027. Rioarribasaurus – junior synonym of Coelophysis
  1028. Riojasaurus
  1029. Riojasuchus – actually a non-dinosaurian archosaur
  1030. Rocasaurus
  1031. “Roccosaurus” – nomen nudum; Melanorosaurus
  1032. Rubeosaurus
  1033. Ruehleia
  1034. Rugops
  1035. “Rutellum” – pre-Linnaean name, invalid under modern taxonomic systems
  1036. Ruyangosaurus
  1037. Sacisaurus – probably a dinosauromorph
  1038. Sahaliyania
  1039. Saichania
  1040. “Salimosaurus” – nomen nudum, probably Brachiosaurus or Giraffatitan
  1041. Saltasaurus
  1042. Saltopus – probably a dinosauromorph
  1043. “Saltriosaurus” – nomen nudum
  1044. “Sanchusaurus” – nomen nudum
  1045. “Sangonghesaurus” – nomen nudum
  1046. Sanjuansaurus
  1047. Sanpasaurus
  1048. Santanaraptor
  1049. Sarahsaurus
  1050. Sarcolestes
  1051. Sarcosaurus
  1052. Saturnalia
  1053. Sauraechinodon – junior synonym of Echinodon
  1054. “Sauraechmodon” – nomen nudum; Echinodon
  1055. Saurolophus
  1056. Sauropelta
  1057. Saurophaganax
  1058. “Saurophagus” – preoccupied name, now known as Saurophaganax
  1059. Sauroplites
  1060. “Sauropodus” – nomen nudum
  1061. Sauroposeidon
  1062. Saurornithoides
  1063. Saurornitholestes
  1064. Scansoriopteryx – possible junior synonym of Epidendrosaurus
  1065. Scaphonyx – actually a rhynchosaur
  1066. Scelidosaurus
  1067. Scipionyx
  1068. Scleromochlus – actually a non-dinosaurian avemetatarsalian
  1069. Scolosaurus – junior synonym of Euoplocephalus
  1070. “Scrotum” – invalid, considered to have been a descriptive label rather than a Linnaean name
  1071. Scutellosaurus
  1072. Segisaurus
  1073. Segnosaurus
  1074. Seismosaurus – junior synonym of Diplodocus
  1075. Seitaad
  1076. “Selimanosaurus” – nomen nudum; Dicraeosaurus
  1077. Sellacoxa
  1078. Sellosaurus – likely junior synonym of Plateosaurus
  1079. Serendipaceratops
  1080. Shamosaurus
  1081. Shanag
  1082. Shanshanosaurus – junior synonym of Tarbosaurus
  1083. Shantungosaurus
  1084. Shanxia
  1085. Shanyangosaurus
  1086. Shaochilong
  1087. Shenzhouraptor – actually a bird; likely junior synonym of Jeholornis.
  1088. Shenzhousaurus
  1089. Shidaisaurus
  1090. Shixinggia
  1091. Shuangmiaosaurus
  1092. Shunosaurus
  1093. Shuosaurus – misspelling of Shunosaurus
  1094. Shuvosaurus – actually a rauisuchian
  1095. Shuvuuia
  1096. Siamodon
  1097. Siamosaurus
  1098. Siamotyrannus
  1099. Sigilmassasaurus
  1100. Silesaurus – probably a dinosauromorph
  1101. Siluosaurus
  1102. Silvisaurus
  1103. Similicaudipteryx
  1104. Sinocalliopteryx
  1105. Sinoceratops
  1106. Sinocoelurus
  1107. “Sinopliosaurus” – material originally classified with pliosaur Sinopliosaurus, now recognized as dinosaurian
  1108. Sinornithoides
  1109. Sinornithomimus
  1110. Sinornithosaurus
  1111. Sinosauropteryx
  1112. Sinosaurus
  1113. Sinotyrannus
  1114. Sinovenator
  1115. Sinraptor
  1116. Sinucerasaurus – junior synonym of Sinusonasus
  1117. Sinusonasus
  1118. “Smilodon” – preoccupied name, now known as Zanclodon
  1119. Sonidosaurus
  1120. Sonorasaurus
  1121. Sphaerotholus
  1122. Sphenosaurus – actually a non-dinosaurian reptile
  1123. Sphenospondylus – junior synonym of Iguanodon
  1124. Spinophorosaurus
  1125. Spinops
  1126. Spinosaurus
  1127. Spinostropheus
  1128. Spinosuchus – actually a non-dinosaurian reptile
  1129. Spondylosoma – possibly a rauisuchian
  1130. Squalodon – actually a cetacean
  1131. Staurikosaurus
  1132. Stegoceras
  1133. Stegopelta
  1134. Stegosaurides
  1135. “Stegosauroides” – misspelling of Stegosaurides
  1136. Stegosaurus
  1137. Stenonychosaurus – junior synonym of Troodon
  1138. Stenopelix
  1139. Stenotholus – junior synonym of Stygimoloch
  1140. Stephanosaurus – junior synonym of Lambeosaurus
  1141. “Stereocephalus” – preoccupied name, now known as Euoplocephalus
  1142. “Stereosaurus” – nomen nudum; possibly a plesiosaur
  1143. Sterrholophus – junior synonym of Triceratops
  1144. Stokesosaurus
  1145. Stormbergia
  1146. Strenusaurus – junior synonym of Riojasaurus
  1147. Streptospondylus
  1148. Struthiomimus
  1149. Struthiosaurus
  1150. Stygimoloch – possibly a sub-adult Pachycephalosaurus
  1151. Stygivenator – junior synonym of Tyrannosaurus
  1152. Styracosaurus
  1153. Succinodon – actually fossilized mollusc borings
  1154. Suchomimus
  1155. Suchosaurus – originally described as a crocodile, possibly a spinosaurid
  1156. Suchoprion – actually a phytosaur
  1157. “Sugiyamasaurus” – nomen nudum
  1158. “Sulaimansaurus” – misspelling of “Sulaimanisaurus”
  1159. Supersaurus
  1160. Suuwassea
  1161. Suzhousaurus
  1162. Symphyrophus – junior synonym of Camptosaurus
  1163. Syngonosaurus – junior synonym of Acanthopholis
  1164. “Syntarsus” – preoccupied name, now known as Megapnosaurus
  1165. Syrmosaurus – junior synonym of Pinacosaurus
  1166. “Szechuanoraptor” – nomen nudum
  1167. Szechuanosaurus
  1168. Talarurus
  1169. Talenkauen
  1170. Talos
  1171. Tangvayosaurus
  1172. Tanius
  1173. Tanycolagreus
  1174. Tanystropheus – actually a prolacertiform archosauromorph
  1175. Tanystrosuchus – possible junior synonym of Halticosaurus or Liliensternus
  1176. Tapinocephalus – actually a therapsid
  1177. Tapuiasaurus
  1178. Tarascosaurus
  1179. Tarbosaurus
  1180. Tarchia
  1181. Tastavinsaurus
  1182. Tatankacephalus
  1183. Tatankaceratops
  1184. Tatisaurus
  1185. Taveirosaurus
  1186. Tawa
  1187. Tawasaurus – junior synonym of Lufengosaurus
  1188. Tazoudasaurus
  1189. Technosaurus – possibly a dinosauromorph
  1190. Tecovasaurus – actually a non-dinosaurian archosauriform
  1191. Tehuelchesaurus
  1192. Teinurosaurus
  1193. “Teleocrater” – nomen nudum; possibly non-dinosaurian
  1194. Telmatosaurus
  1195. “Tenantosaurus” – nomen nudum; Tenontosaurus
  1196. “Tenchisaurus” – nomen nudum; actually an unpublished museum name for Tianchisaurus
  1197. Tendaguria
  1198. Tenontosaurus
  1199. Teratophoneus
  1200. Teratosaurus – actually a non-dinosaurian archosaur
  1201. Termatosaurus – actually a phytosaur, with some Internet sources accidentally transposing species of
    Tetragonosaurus onto it
  1202. Tethyshadros
  1203. Tetragonosaurus – junior synonym of Lambeosaurus
  1204. Texasetes
  1205. Teyuwasu
  1206. Thecocoelurus
  1207. Thecodontosaurus
  1208. Thecospondylus
  1209. Theiophytalia
  1210. Therizinosaurus
  1211. Therosaurus – junior synonym of Iguanodon
  1212. Thescelosaurus
  1213. Thespesius – possibly Edmontosaurus
  1214. “Thotobolosaurus” – nomen nudum
  1215. Tianchisaurus
  1216. “Tianchungosaurus” – nomen nudum; Dianchungosaurus (crocodilian)
  1217. Tianyulong
  1218. Tianyuraptor
  1219. Tianzhenosaurus
  1220. Tichosteus
  1221. Tienshanosaurus
  1222. Timimus
  1223. Titanoceratops
  1224. Titanosaurus Lydekker, 1877
  1225. “Titanosaurus” Marsh, 1877 – preoccupied name, now known as Atlantosaurus
  1226. Tochisaurus
  1227. “Tomodon” – preoccupied name, now known as Diplotomodon
  1228. Tonganosaurus
  1229. “Tonouchisaurus” – nomen nudum
  1230. Torilion – junior synonym of Barilium
  1231. Tornieria
  1232. Torosaurus – possibly the mature form of Triceratops
  1233. Torvosaurus
  1234. Trachodon
  1235. Traukutitan
  1236. Trialestes – actually a crocodilian
  1237. “Triassolestes” – preoccupied name, now known as Trialestes
  1238. Tribelesodon – actually Tanystropheus, a prolacertiform archosauromorph
  1239. Triceratops
  1240. Trigonosaurus
  1241. Trimucrodon
  1242. Troodon
  1243. Tsaagan
  1244. Tsagantegia
  1245. Tsintaosaurus
  1246. “Tsuchikurasaurus” – nomen nudum
  1247. Tugulusaurus
  1248. Tuojiangosaurus
  1249. Turanoceratops
  1250. Turiasaurus
  1251. Tylocephale
  1252. Tylosteus – synonym of Pachycephalosaurus
  1253. Tyrannosaurus
  1254. Tyrannotitan
  1255. “Tyreophorus” – nomen nudum, probably a typographical error for “thyreophoran”
  1256. Udanoceratops
  1257. Ugrosaurus – probably junior synonym of Triceratops
  1258. Uintasaurus – junior synonym of Camarasaurus
  1259. Ultrasauros – junior synonym of Supersaurus
  1260. Ultrasaurus H. M. Kim, 1983
  1261. “Ultrasaurus” Jensen, 1985 – preoccupied name, now known as Ultrasauros
  1262. Umarsaurus – nomen nudum; Barsboldia
  1263. Unaysaurus
  1264. Unenlagia
  1265. Unescoceratops
  1266. “Unicerosaurus” – nomen nudum, actually a fish
  1267. Unquillosaurus
  1268. Urbacodon
  1269. Utahceratops
  1270. Utahraptor
  1271. Uteodon
  1272. Vagaceratops
  1273. Valdoraptor
  1274. Valdosaurus
  1275. Variraptor
  1276. Vectisaurus – junior synonym of Iguanodon
  1277. Velafrons
  1278. Velocipes
  1279. Velociraptor
  1280. Velocisaurus
  1281. Venaticosuchus – actually a non-dinosaurian archosaur
  1282. Venenosaurus
  1283. Veterupristisaurus
  1284. Vitakridrinda
  1285. “Vitaridrinda” – misspelling of Vitakridrinda
  1286. Volkheimeria
  1287. Vulcanodon
  1288. Wadhurstia – junior synonym of Hypselospinus
  1289. Wakinosaurus
  1290. Walgettosuchus
  1291. “Walkeria” – preoccupied name, now known as Alwalkeria
  1292. “Walkersaurus” – nomen nudum; Duriavenator
  1293. Wannanosaurus
  1294. Wellnhoferia – possible junior synonym of Archaeopteryx
  1295. Willinakaqe
  1296. Wintonotitan
  1297. Wuerhosaurus
  1298. Wulagasaurus
  1299. Wyleyia – probably a bird
  1300. “Wyomingraptor” – nomen nudum
  1301. Xenoposeidon
  1302. Xenotarsosaurus
  1303. Xianshanosaurus
  1304. Xiaosaurus
  1305. Xinjiangovenator
  1306. Xiongguanlong
  1307. Xixianykus
  1308. Xixiasaurus
  1309. Xixiposaurus
  1310. Xuanhanosaurus
  1311. Xuanhuaceratops
  1312. “Xuanhuasaurus” – nomen nudum; Xuanhuaceratops
  1313. Xuwulong
  1314. Yaleosaurus – junior synonym of Anchisaurus
  1315. Yamaceratops
  1316. Yandusaurus
  1317. Yangchuanosaurus
  1318. Yanornis – actually a bird
  1319. Yaxartosaurus – misspelling of Jaxartosaurus
  1320. “Yezosaurus” – nomen nudum; non-dinosaurian
  1321. “Yibinosaurus” – nomen nudum
  1322. Yimenosaurus
  1323. “Yingshanosaurus” – nomen nudum
  1324. Yinlong
  1325. Yixianosaurus
  1326. “Yizhousaurus” – nomen nudum
  1327. Yuanmousaurus
  1328. “Yubasaurus” – nomen nudum; Yandusaurus
  1329. Yueosaurus
  1330. Yunnanosaurus
  1331. “Yunxiansaurus” – nomen nudum
  1332. Zalmoxes
  1333. Zanabazar
  1334. Zanclodon – non-dinosaurian (in part), some species referred to Megalosaurus and Plateosaurus
  1335. Zapalasaurus
  1336. Zapsalis – junior synonym of Paronychodon
  1337. Zatomus – actually a non-dinosaurian archosaur
  1338. Zephyrosaurus
  1339. Zhongyuansaurus
  1340. Zhuchengceratops
  1341. Zhuchengosaurus – junior synonym of Shantungosaurus
  1342. Zhuchengtyrannus
  1343. Zigongosaurus – possible junior synonym of Mamenchisaurus
  1344. Zizhongosaurus
  1345. Zuniceratops
  1346. Zuolong
  1347. Zupaysaurus