Dinosaurus berkembang menjadi spesies sendiri dan berpisah dari nenek
moyang mereka, archosaurus, sekitar 230 juta tahun yang lalu, pada
periode Trias Tengah hingga Trias Akhir, kira-kira 20 juta tahun setelah peristiwa kepunahan Permian-Trias yang memunahkan hampir 95% kehidupan di Bumi. Penanggalan radiometrik dari formasi batuan yang mengandung fosil dinosaurus awal seperti genus Eoraptor membuktikan bahwa hewan tersebut adalah dinosaurus tertua di Bumi. Para paleontolog berpendapat bahwa Eoraptor kemungkinan adalah nenek moyang dari semua dinosaurus; jika hal ini benar, maka bisa disimpulkan bahwa pada awalnya, karakteristik dinosaurus adalah bertubuh kecil, dan predator berkaki dua. Penemuan hewan purbakala ornithodiran yang mirip dinosaurus seperti Marasuchus dan Lagerpeton di Argentina turut mendukung pendapat ini.
Visualisasi Dinosaurus dalam Film
Ciri - Ciri Dinosaurus
Untuk bisa diklasifikasikan sebagai dinosaurus,fosil atau dugaan dari
seekor makhluk hidup,terutama hewan,harus memiliki ciri-ciri sebagai
berikut:
- Memiliki jenis tulang panggul Saurischia atau Ornithschia.
- Hidup pada Masa Mesozoikum, binatang apapun yang hidup sebelum atau setelah Masa Mesozoikum tidak dikategorikan sebagai dinosaurus, misalnya Dimetrodon.
- Memiliki kaki tegak langsung di bawah tubuh seperti Mamalia dan Aves modern.
- Tidak memiliki sayap atau sirip berukuran besar yang difungsikan untuk terbang atau berenang.
- Bereproduksi secara ovipar.
Hingga Desember 2015, telah diketahui lebih dari 1.600 genera
dinosaurus, namun kira-kira 30% dari jumlah ini adalah nama sinonim
(tidak valid). Ini karena sama seperti pada zaman sekarang, fosil
dinosaurus sesuai dengan keadaan binatang itu saat masih bernyawa. Jika
saat masih hidup spesies dinosaurus tertentu sudah langka, maka fosilnya
akan lebih langka lagi. Salah satu contohnya adalah fosil Iguanodon, Megalosaurus atau Allosaurus, yang memiliki persebaran yang amat luas sampai terdapat di beberapa benua yang berbeda. Sebaliknya, fosil semacam Argentinosaurus, Therizinosaurus atau Deinocheirus penyebarannya amat sempit dan sangat langka.
Dinosaurus juga menggunakan sistem nama binominal nomenklatur, seperti yang dicetuskan oleh biologis Carolus Linnaeus. Setiap dinosaurus memiliki dua nama, satu nama depan sebagai nama genus dan satu nama belakang sebagai nama spesies.
Misalnya Tyrannosaurus rex, Brachiosaurus altithorax, Triceratops
horridus, atau Stegosaurus armatus. Biasanya, di luar lingkungan ilmu
pengetahuan, yang digunakan hanya nama genusnya. Namun nama lengkapnya
ternyata menarik perhatian banyak orang sehingga sering diikutsertakan,
yang berarti juga menambah arti dinosaurus itu. Misalnya Triceratops
berarti "wajah bertanduk tiga", namun jika nama spesiesnya dipakai juga
(horridus)berarti "wajah bertanduk tiga yang menakutkan".
Masa Hidup Dinosaurus
Semua dinosaurus hidup pada Masa Mesozoikum (Zaman Pertengahan) yang
berlangsung setelah Masa Paleozoikum dan sebelum Masa Kenozoikum /
Neozoikum pada Eon Fanerozoikum (Kehidupan Terlihat). Masa Mesozoikum
berlangsung antara 250-65 juta tahun yang lalu. Masa Mesozoikum dibagi
menjadi tiga periode, yaitu Periode Triasik / Trias (250-206 juta tahun
yang lalu), Jurasik / Jura (205-145 juta tahun yang lalu), dan Kretaseus
/ Kapur (144-65 juta tahun yang lalu).
Tidak semua dinosaurus hidup pada zaman yang sama, misalnya Stegosaurus dan Tyrannosaurus tidak pernah bertemu karena Stegosaurus hidup pada Periode Jurasik, sedangkan Tyrannosaurus
hidup pada Periode Kretaseus. Dinosaurus pertama muncul pada Akhir
Periode Triasik pada Kala Carnian, sekitar 237 juta tahun yang lalu,
kemudian berkembang secara konstan lalu meledak ketika Periode Jurasik
Awal. Kebanyakan dinosaurus hidup pada Periode Jurasik dan Kretaseus.
Berikut ini Lanjutan Jenis-Jenis Dinosaurus Di Dunia mulai Abjad M
- Macelognathus – actually a sphenosuchian crocodilian
- Machairasaurus
- Macrodontophion
- Macrogryphosaurus
- Macrophalangia – junior synonym of Chirostenotes
- “Macroscelosaurus” – nomen nudum; probable junior synonym of Tanystropheus
- Macrurosaurus
- “Madsenius” – nomen nudum
- Magnapaulia[13]
- Magnirostris
- Magnosaurus
- “Magulodon” – nomen nudum
- Magyarosaurus
- Mahakala
- Maiasaura
- Majungasaurus
- Majungatholus – probable junior synonym of Majungasaurus
- Malarguesaurus
- Malawisaurus
- Maleevosaurus – junior synonym of Tarbosaurus
- Maleevus
Mamenchisaurus.
- Mamenchisaurus
- Manidens
- Mandschurosaurus
- Manospondylus – synonym of Tyrannosaurus
- Mantellisaurus
- Mantellodon
- Mapusaurus
- Marasuchus – actually a non-dinosaurian dinosauromorph
- Marisaurus
- Marmarospondylus – probable junior synonym of Bothriospondylus
- Marshosaurus
- Martharaptor
- Masiakasaurus
- Massospondylus
- Maxakalisaurus
- Medusaceratops
- “Megacervixosaurus” – nomen nudum
- “Megadactylus” – preoccupied name, now known as Anchisaurus
- “Megadontosaurus” – nomen nudum; Microvenator
- Megalosaurus
- Megapnosaurus
- Megaraptor
- Mei
- Melanorosaurus
- Mendozasaurus
- “Merosaurus” – nomen nudum
- Metriacanthosaurus
- “Microcephale” – nomen nudum
- “Microceratops” – preoccupied name, now known as Microceratus
- Microceratus
- Microcoelus – possible synonym of Neuquensaurus
- “Microdontosaurus” – nomen nudum
- Microhadrosaurus
- Micropachycephalosaurus
- Microraptor
- Microsaurops – junior synonym of Saltasaurus
- Microvenator
- “Mifunesaurus” – nomen nudum
- Minmi
- Minotaurasaurus
- Miragaia
- Mirischia
- “Moabosaurus” – nomen nudum
- Mochlodon
- “Mohammadisaurus” – nomen nudum; Tornieria
- Mojoceratops
Muttaburrasaurus skeleton.
- Mongolosaurus
- Monkonosaurus
- Monoclonius
- Monolophosaurus
- “Mononychus” – preoccupied name, now known as Mononykus
- Mononykus
- Montanoceratops
- Morinosaurus
- Morosaurus – junior synonym of Camarasaurus
- “Moshisaurus” – nomen nudum; ?Mamenchisaurus
- “Mtapaiasaurus” – nomen nudum, probably Giraffatitan
- “Mtotosaurus” – nomen nudum; Dicraeosaurus
- Mussaurus
- Muttaburrasaurus
- Muyelensaurus
- Mymoorapelta
- Naashoibitosaurus
- Nambalia
- Nankangia
- Nanningosaurus
- Nanosaurus
- Nanotyrannosaurus – a misspelling of Nanotyrannus
- Nanotyrannus – possibly a juvenile Tyrannosaurus or other tyrannosaurid[14]
- Nanshiungosaurus
- Nanuqsaurus
- Nanyangosaurus
- Narambuenatitan
- Nasutoceratops
- Nebulasaurus
- “Nectosaurus” – preoccupied name, now known as Kritosaurus
- Nedcolbertia
- Nedoceratops
- Neimongosaurus
- “Nemegtia” – preoccupied name, now known as Nemegtomaia
- Nemegtomaia
- Nemegtosaurus
- “Neosaurus” – preoccupied name, now known as Parrosaurus (possible junior synonym of Hypsibema)
- Neosodon
- Neovenator
- Neuquenraptor
- Neuquensaurus
- “Newtonsaurus” – nomen nudum
- “Ngexisaurus” – nomen nudum
- Nigersaurus
- “Ninghsiasaurus” – nomen nudum; Pinacosaurus
- Ningyuansaurus
- Niobrarasaurus
- Nipponosaurus
- Noasaurus
- Nodocephalosaurus
- Nodosaurus
- Nomingia
Nanshiungosaurus.
- Nopcsaspondylus
- Normanniasaurus
- Nothronychus
- Notoceratops
- Notohypsilophodon
- “Nouerosaurus“[6] – variant spelling of Nurosaurus
- Nqwebasaurus
- “Nteregosaurus” – nomen nudum; Janenschia
- “Nuoerosaurus” – variant spelling of Nurosaurus
- “Nuoersaurus” – variant spelling of Nurosaurus
- “Nurosaurus” – nomen nudum
- Nuthetes
- Nyasasaurus – possibly a non-dinosaurian dinosauriform
- “Nyororosaurus” – nomen nudum; Dicraeosaurus
- Ohmdenosaurus
- Ojoceratops
- Ojoraptorsaurus
- Oligosaurus – junior synonym of Rhabdodon
- Olorotitan
- Omeisaurus
- Omnivoropteryx – probably a bird
- “Omosaurus” – preoccupied name, now known as Dacentrurus
- Onychosaurus – synonym of Rhabdodon, or a dubious ankylosaurian
- Oohkotokia
- Opisthocoelicaudia
- Oplosaurus
- “Orcomimus” – nomen nudum
- Orinosaurus – junior synonym (unneeded replacement name) of Orosaurus
- Orkoraptor
- Ornatotholus
- Ornithodesmus
- “Ornithoides” – nomen nudum; Saurornithoides
- Ornitholestes
Ornitholestes sketch.
- Ornithomerus – junior synonym of Rhabdodon
- Ornithomimoides
- Ornithomimus
- Ornithopsis
- Ornithosuchus – actually a non-dinosaurian archosaur
- Ornithotarsus – possible junior synonym of Hadrosaurus
- Orodromeus
- Orosaurus – possible junior synonym of Euskelosaurus
- Orthogoniosaurus
- Orthomerus
- Oryctodromeus
- “Oshanosaurus” – nomen nudum
- Osmakasaurus[15]
- Ostafrikasaurus
- Othnielia
- Othnielosaurus
- “Otogosaurus” – nomen nudum
- Ouranosaurus
- Overosaurus
- Oviraptor
- “Ovoraptor” – nomen nudum; Velociraptor
- Owenodon
- Oxalaia
- Ozraptor
- Pachycephalosaurus
- Pachyrhinosaurus
- Pachysauriscus – probable junior synonym of Plateosaurus
- Pachysaurops – probable junior synonym of Plateosaurus
- “Pachysaurus” – preoccupied name, now known as Pachysauriscus; probable junior synonym of Plateosaurus
- Pachyspondylus – probable junior synonym of Massospondylus
- Pachysuchus[16]
- Pakisaurus
- 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
- Paludititan
- Paluxysaurus
- Pampadromaeus[17]
- Pamparaptor
- Panamericansaurus
- Panoplosaurus
- Panphagia
- Pantydraco
Pachycephalosaurus.
- “Paraiguanodon” – nomen nudum; Bactrosaurus
- Paralititan
- Paranthodon
- Pararhabdodon
- Parasaurolophus
- Pareiasaurus – actually a pareiasaur
- “Parhabdodon” – nomen nudum; misspelling of Pararhabdodon
- Parksosaurus
- Paronychodon
- Parrosaurus – possible junior synonym of Hypsibema
- Parvicursor
- Patagonykus
- Patagosaurus
- “Patricosaurus” – actually a chimera of various non-dinosaurian reptiles
- Pawpawsaurus
- Pectinodon – junior synonym of Troodon
- Pedopenna
- Pegomastax
- Peishansaurus
- Pekinosaurus – actually a pseudosuchian; possibly a junior synonym of Revueltosaurus
- Pelecanimimus
- Pellegrinisaurus
- Peloroplites
- Pelorosaurus
- “Peltosaurus” – preoccupied name, now known as Sauropelta
- Penelopognathus
- Pentaceratops
- Petrobrasaurus[18]
- Phaedrolosaurus
- Philovenator
- Phuwiangosaurus
- Phyllodon
- Piatnitzkysaurus
- Picrodon – junior synonym of Avalonianus
- Pinacosaurus
- Pisanosaurus
- Pitekunsaurus
- Piveteausaurus
- Planicoxa
- Plateosauravus
- Plateosaurus
- Platyceratops
- Pleurocoelus – possibly Astrodon
- Pleuropeltus – junior synonym of Struthiosaurus
- Pneumatoarthrus – actually a turtle
- Pneumatoraptor
- Podokesaurus
- Poekilopleuron
- Polacanthoides – junior synonym of Hylaeosaurus
- Polacanthus
- Polyodontosaurus – junior synonym of Troodon
- Polyonax
- Ponerosteus
- Poposaurus – actually a non-dinosaurian archosaur
Parasaurolophus sketch.
- Postosuchus – actually a rauisuchian
- Pradhania
- Prenocephale
- Prenoceratops
- Priconodon
- Priodontognathus
- Proa
- Probactrosaurus
- Proceratops – junior synonym (unneeded replacement name) of Ceratops
- Proceratosaurus
- Procerosaurus von Huene, 1902 – actually a prolacertiform archosauromorph
- “Procerosaurus” Fritsch, 1905 – preoccupied name, now known as Ponerosteus
- Procheneosaurus – junior synonym of Lambeosaurus
- Procompsognathus
- Prodeinodon
- “Proiguanodon” – nomen nudum; Iguanodon
- Propanoplosaurus
- Proplanicoxa
- Prosaurolophus
- Protarchaeopteryx
- Protecovasaurus – actually 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 von Meyer, 1830 – actually a 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
Qantassaurus skeleton.
- Qantassaurus
- Qiaowanlong
- Qinlingosaurus
- Qingxiusaurus
- Qiupalong
- Quaesitosaurus
- Quetecsaurus
- Quilmesaurus
- Rachitrema – possibly an ichthyosaur
- Rahiolisaurus
- “Rahona” – preoccupied name, now known as Rahonavis
- Rahonavis – possibly a bird
- Rajasaurus
- Rapator
- Rapetosaurus
- Raptorex
- Ratchasimasaurus
- Rayososaurus
- Razanandrongobe – may be a theropod or crocodylomorph
- Rebbachisaurus
- Regnosaurus
- “Revueltoraptor” – nomen nudum; junior synonym of Gojirasaurus
- Revueltosaurus – actually a pseudosuchian
- Rhabdodon
- Rhadinosaurus – may be non-dinosaurian, possibly crocodilian
- Rhodanosaurus – junior synonym of Struthiosaurus
- Rhoetosaurus
- Rhopalodon – actually a synapsid
- Ricardoestesia – intended but unofficial spelling of Richardoestesia
- Richardoestesia
Rinchenia.
- “Rileya” – preoccupied name, now known as Rileyasuchus
- Rileyasuchus – a chimera of phytosaur and Thecodontosaurus remains
- Rinchenia
- Rinconsaurus
- Rioarribasaurus – junior synonym of Coelophysis
- “Riodevasaurus” – nomen nudum; Turiasaurus
- Riojasaurus
- Riojasuchus – actually a non-dinosaurian archosaur
- Rocasaurus
- “Roccosaurus” – nomen nudum; Melanorosaurus
- Rubeosaurus
- Ruehleia
- Rugops
- “Rutellum” – pre-Linnaean name, invalid under modern taxonomic systems
- Ruyangosaurus
- Sacisaurus – actually a silesaurid
- Sahaliyania
- Saichania
- “Salimosaurus” – nomen nudum, probably Giraffatitan
- Saltasaurus
- Saltopus – probably a non-dinosaurian dinosauromorph
- “Saltriosaurus” – nomen nudum
- “Sanchusaurus” – nomen nudum
- “Sangonghesaurus” – nomen nudum
- Sanjuansaurus
- Sanpasaurus
- Santanaraptor
- Sarahsaurus
- Sarcolestes
- Sarcosaurus
- Saturnalia
- Sauraechinodon[6] – junior synonym of Echinodon
- “Sauraechmodon” – nomen nudum; Echinodon
- Saurolophus
- Sauroniops
- Sauropelta
- Saurophaganax
- “Saurophagus” – preoccupied name, now known as Saurophaganax
- Sauroplites
- “Sauropodus”[20] – nomen nudum
- Sauroposeidon
- Saurornithoides
- Saurornitholestes
- Scansoriopteryx – possible junior synonym of Epidendrosaurus
- Scaphonyx – actually a rhynchosaur
- Scelidosaurus
- Scipionyx
- Sciurumimus
- Scleromochlus – actually a non-dinosaurian avemetatarsalian
- Scolosaurus
- “Scrotum” – invalid, considered to have been a descriptive label rather than a Linnaean name[22]
- Scutellosaurus
Segisaurus.
- Secernosaurus
- Segisaurus
- Segnosaurus
- Seismosaurus – junior synonym of Diplodocus
- Seitaad
- “Selimanosaurus” – nomen nudum; Dicraeosaurus
- Sellacoxa
- Sellosaurus – likely junior synonym of Plateosaurus
- Serendipaceratops
- Shamosaurus
- Shanag
- Shanshanosaurus – junior synonym of Tarbosaurus
- Shantungosaurus
- Shanxia
- Shanyangosaurus
- Shaochilong
- Shenzhouraptor – actually a bird; likely junior synonym of Jeholornis.[23]
- Shenzhousaurus
- Shidaisaurus
- Shixinggia
- Shuangmiaosaurus
- Shunosaurus
- Shuosaurus
- Shunosaurus
- Shuvosaurus – rauisuchian
- Shuvuuia
- Siamodon
- Siamosaurus
- Siamotyrannus
- Siats
- Sigilmassasaurus
- Silesaurus – silesaurid
- Siluosaurus
- Silvisaurus
- Similicaudipteryx
- Sinocalliopteryx
- Sinoceratops
- Sinocoelurus
- “Sinopliosaurus”
- Sinornithoides
- Sinornithomimus
- Sinornithosaurus
- Sinosauropteryx
- Sinosaurus
- Sinotyrannus
- Sinovenator
- Sinraptor
- Sinucerasaurus – junior synonym of Sinusonasus
- Sinusonasus
Spinosaurus.
- Skorpiovenator
- “Smilodon” – preoccupied name, now known as Zanclodon
- Sonidosaurus
- Sonorasaurus
- Sphaerotholus
- Sphenosaurus – actually a non-dinosaurian reptile
- Sphenospondylus – junior synonym of Iguanodon
- Spinophorosaurus
- Spinops
- Spinosaurus
- Spinostropheus
- Spinosuchus – actually a non-dinosaurian reptile
- Spondylosoma – possibly a rauisuchian
- Squalodon – actually a cetacean
- Staurikosaurus
- Stegoceras
- Stegopelta
- Stegosaurides
- “Stegosauroides“[6] – misspelling of Stegosaurides
- Stegosaurus
- Stenonychosaurus – junior synonym of Troodon
- Stenopelix
- Stenotholus – junior synonym of Stygimoloch
- Stephanosaurus – junior synonym of Lambeosaurus
- “Stereocephalus” – preoccupied name, now known as Euoplocephalus
- “Stereosaurus” – nomen nudum; possibly a plesiosaur
- Sterrholophus – junior synonym of Triceratops
- Stokesosaurus
- Stormbergia
- Strenusaurus – junior synonym of Riojasaurus
- Streptospondylus
- Struthiomimus
- Struthiosaurus
- Stygimoloch – possibly a sub-adult Pachycephalosaurus
- Stygivenator – junior synonym of Tyrannosaurus
- Styracosaurus
- Succinodon – actually fossilized mollusc borings
- Suchomimus
- Suchosaurus – originally described as a crocodile, actually a spinosaurid
- Suchoprion – actually a phytosaur
- “Sugiyamasaurus” – nomen nudum
Struthiomimus.
- Sulaimanisaurus
- “Sulaimansaurus” – misspelling of “Sulaimanisaurus”
- Supersaurus
- Suuwassea
- Suzhousaurus
- Symphyrophus – junior synonym of Camptosaurus
- Syngonosaurus – junior synonym of Acanthopholis
- “Syntarsus” – preoccupied name, now known as Megapnosaurus
- Syrmosaurus – junior synonym of Pinacosaurus
- “Szechuanoraptor” – nomen nudum
- Szechuanosaurus
- Talarurus
- Talenkauen
- Talos
- Tangvayosaurus
- Tanius
- Tanycolagreus
- Tanystropheus – actually a prolacertiform archosauromorph
- Tanystrosuchus – possible junior synonym of Halticosaurus or Liliensternus
- Taohelong
- Tapinocephalus – actually a therapsid
- Tapuiasaurus[25]
- Tarascosaurus
- Tarbosaurus
- Tarchia
- Tastavinsaurus
- Tatankacephalus
- Tatankaceratops
- Tataouinea
- Tatisaurus
- Taveirosaurus
- Tawa
- Tawasaurus – junior synonym of Lufengosaurus
- Tazoudasaurus
- Technosaurus – actually a silesaurid
- Tecovasaurus – actually a non-dinosaurian archosauriform
- Tehuelchesaurus
- Teinurosaurus
- “Teleocrater” – nomen nudum; possibly non-dinosaurian
- Telmatosaurus
- “Tenantosaurus” – nomen nudum; Tenontosaurus
- “Tenchisaurus” – nomen nudum; actually an unpublished museum name for Tianchisaurus
- Tendaguria
- Tenontosaurus
- Teratophoneus
- Teratosaurus – actually a non-dinosaurian archosaur
- Termatosaurus – actually a phytosaur, with some Internet sources accidentally transposing species of Tetragonosaurus onto it
- Tethyshadros
- Tetragonosaurus – junior synonym of Lambeosaurus
Tyrannosaurus skeleton.
- Texacephale
- Texasetes
- Teyuwasu
- Thecocoelurus
- Thecodontosaurus
- Thecospondylus
- Theiophytalia
- Therizinosaurus
- Therosaurus – junior synonym of Iguanodon
- Thescelosaurus
- Thespesius – possibly Edmontosaurus
- “Thotobolosaurus” – nomen nudum
- Tianchisaurus
- “Tianchungosaurus” – nomen nudum; Dianchungosaurus (crocodilian)
- Tianyulong
- Tianyuraptor
- Tianzhenosaurus
- Tichosteus
- Tienshanosaurus
- Timimus
- Titanoceratops
- Titanosaurus Lydekker, 1877
- “Titanosaurus” Marsh, 1877 – preoccupied name, now known as Atlantosaurus
- Tochisaurus
- “Tomodon” – preoccupied name, now known as Diplotomodon
- Tonganosaurus
- “Tonouchisaurus” – nomen nudum
- Torilion – junior synonym of Barilium
- Tornieria
- Torosaurus – possibly the mature form of Triceratops
- Torvosaurus
- Trachodon
- Traukutitan
- Trialestes – actually a crocodilian
- “Triassolestes” – preoccupied name, now known as Trialestes
- Tribelesodon – actually Tanystropheus, a prolacertiform archosauromorph
- Triceratops
- Trigonosaurus
- Trimucrodon
- Trinisaura
- Troodon
- Tsaagan
- Tsagantegia
- Tsintaosaurus
- “Tsuchikurasaurus” – nomen nudum
- Tugulusaurus
- Tuojiangosaurus
- Turanoceratops
- Turiasaurus
- Tylocephale
- Tylosteus – synonym of Pachycephalosaurus
- Tyrannosaurus
- Tyrannotitan
- “Tyreophorus” – nomen nudum, probably a typographical error for “thyreophoran”
Illustration of the skull of Udanoceratops.
- Uberabatitan
- 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 – nomen nudum; Barsboldia
- Unaysaurus
- Unenlagia
- Unescoceratops
- “Unicerosaurus” – nomen nudum, actually a fish
- Unquillosaurus
- Urbacodon
- Utahceratops
- Utahraptor
- Uteodon
- Vagaceratops
- Valdoraptor
- Valdosaurus
- Variraptor
Life restoration of Velociraptor.
- Vectensia – junior synonym of Polacanthus
- Vectisaurus
- Velafrons
- Velocipes
- Velociraptor
- Velocisaurus
- Venaticosuchus – actually a non-dinosaurian archosaur
- Venenosaurus
- Veterupristisaurus
- Vitakridrinda
- Vitakrisaurus
- “Vitaridrinda” – misspelling of Vitakridrinda
- Volkheimeria
- Vulcanodon
- Wadhurstia – junior synonym of Hypselospinus
- Wakinosaurus
- Walgettosuchus
- “Walkeria” – preoccupied name, now known as Alwalkeria
- “Walkersaurus” – nomen nudum; Duriavenator
Wintonotitan
- “Wangonisaurus” – nomen nudum, probably Giraffatitan
- Wannanosaurus
- Wellnhoferia – Archaeopteryx
- Willinakaqe
- Wintonotitan
- Wuerhosaurus
- Wulagasaurus
- Wulatelong
- Wyleyia – probably a bird
- “Wyomingraptor” – nomen nudum
- Xenoceratops
- Xenoposeidon
- Xenotarsosaurus
- Xianshanosaurus
- Xiaosaurus
- Xiaotingia
- Xinjiangovenator
- Xinjiangtitan
- Xiongguanlong
- Xixianykus
- Xixiasaurus
- Xixiposaurus
- Xuanhanosaurus
- Xuanhuaceratops
- “Xuanhuasaurus” – nomen nudum; Xuanhuaceratops
- Xuwulong Sumber : Wikipedia Indonesia, Korando.Com
