page_title: List of dinosaur genera
section_title: T
hierarchical_section_title: List of dinosaur genera / T
caption_attribution_description: English: Thecondontosaurus life restoration 2018 by Mario Lanzas
context_page_description: Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic extinction event 201.3 million years ago; their dominance continued throughout the Jurassic and Cretaceous periods. The fossil record demonstrates that birds are modern feathered dinosaurs, having evolved from earlier theropods during the Late Jurassic epoch. As such, birds were the only dinosaur lineage to survive the Cretaceous–Paleogene extinction event approximately 66 million years ago. Dinosaurs can therefore be divided into avian dinosaurs, or birds; and non-avian dinosaurs, which are all dinosaurs other than birds.
  This list of dinosaurs is a comprehensive listing of all genera that have ever been considered to be non-avian dinosaurs, but this list also includes some dinosaurs which are disputed to be either avian or non-avian, as well as purely vernacular terms.
context_section_description: Tachiraptor
  Talarurus
  Talenkauen
  Talos
  Tambatitanis
  Tangvayosaurus
  Tanius
  Tanycolagreus
  Tanystropheus –  a protorosaur
  Tanystrosuchus
  Taohelong
  Tapinocephalus –  a therapsid
  Tapuiasaurus
  Tarascosaurus
  Tarbosaurus
  Tarchia
  Tastavinsaurus
  Tatankacephalus
  Tatankaceratops - probable junior synonym of Triceratops
  Tataouinea
  Tatisaurus
  Taurovenator
  Taveirosaurus
  Tawa
  Tawasaurus - junior synonym of Lufengosaurus
  Tazoudasaurus
  Technosaurus - possibly non-dinosaurian
  Tecovasaurus –  a non-dinosaurian archosauriform
  Tehuelchesaurus
  Teihivenator - nomen nudum
  Teinurosaurus
  Teleocrater – a basal avemetatarsalian
  Telmatosaurus
  "Tenantosaurus" – nomen nudum; Tenontosaurus
  "Tenchisaurus" - nomen nudum;  an unpublished museum name for Tianchisaurus
  Tendaguria
  Tengrisaurus
  Tenontosaurus
  Teratophoneus
  Teratosaurus –  a non-dinosaurian archosaur
  Termatosaurus –  a phytosaur
  Terminocavus
  Tethyshadros
  Tetragonosaurus – junior synonym of Lambeosaurus
  Texacephale
  Texasetes
  Teyuwasu - possible junior synonym of Staurikosaurus
  Thanatotheristes
  Thanos
  Thecocoelurus
  Thecodontosaurus
  Thecospondylus
  Theiophytalia
  Therizinosaurus
  Therosaurus - a synonym of Iguanodon
  Thescelosaurus
  Thespesius
  "Thotobolosaurus" – nomen nudum; Kholumolumo
  Tianchisaurus
  "Tianchungosaurus" – nomen nudum; Dianchungosaurus (crocodilian)
  Tianyulong
  Tianyuraptor
  Tianzhenosaurus
  Tichosteus
  Tienshanosaurus
  Timimus
  Timurlengia
  Titanoceratops
  Titanosaurus
  "Titanosaurus" – preoccupied name, now known as Atlantosaurus
  Tochisaurus
  "Tomodon" – preoccupied name, now known as Diplotomodon
  Tonganosaurus
  Tongtianlong
  "Tonouchisaurus" – nomen nudum
  Torilion – junior synonym of Barilium
  Tornieria
  Torosaurus
  Torvosaurus
  Tototlmimus
  Trachodon
  Tralkasaurus
  Tratayenia
  Traukutitan
  Trialestes –  a basal crocodylomorph
  "Triassolestes" – preoccupied name, now known as Trialestes
  Tribelesodon –  junior synonym of Tanystropheus, a protorosaur
  Triceratops
  Trigonosaurus
  Trimucrodon
  Trinisaura
  Trierarchuncus
  Triunfosaurus
  Troodon
  Tsaagan
  Tsagantegia
  Tsintaosaurus
  Tugulusaurus
  Tuojiangosaurus
  Turanoceratops
  Turiasaurus
  Tylocephale
  Tylosteus – synonym of Pachycephalosaurus
  Tyrannosaurus
  Tyrannotitan
caption: Artist's restoration of Thecodontosaurus.
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