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Birds are avian dinosaurs, and in phylogenetic taxonomy their over 11,000 extant species are included in the group Dinosauria. Dinosaurs are a diverse group of reptiles [note 1] of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago (mya), although the exact origin and timing of the ...
Velociraptor (/ vəˌlɒsɪˈræptər, vəˈlɒsɪræptər /; [1] lit. 'swift thief') is a genus of small dromaeosaurid dinosaurs that lived in Asia during the Late Cretaceous epoch, about 75 million to 71 million years ago. Two species are currently recognized, although others have been assigned in the past.
Tyrannosaurus (/ t ɪ ˌ r æ n ə ˈ s ɔː r ə s, t aɪ-/) [a] is a genus of large theropod dinosaur.The type species Tyrannosaurus rex (rex meaning 'king' in Latin), often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods.
Allosaurus (/ ˌæləˈsɔːrəs /) [2][3] is an extinct genus of large carnosaurian theropod dinosaur that lived 155 to 145 million years ago during the Late Jurassic period (Kimmeridgian to late Tithonian ages). The name " Allosaurus " means "different lizard", alluding to its unique (at the time of its discovery) concave vertebrae.
Brachiosaurus (/ ˌbrækiəˈsɔːrəs /) is a genus of sauropod dinosaur that lived in North America during the Late Jurassic, about 154 to 150 million years ago. [1] It was first described by American paleontologist Elmer S. Riggs in 1903 from fossils found in the Colorado River valley in western Colorado, United States.
Ott & Larson, 2010. Triceratops (/ traɪˈsɛrətɒps / try-SERR-ə-tops; [1] lit. 'three-horned face') is a genus of chasmosaurine ceratopsian dinosaur that lived during the late Maastrichtian age of the Late Cretaceous period, about 68 to 66 million years ago in what is now western North America. It was one of the last-known non-avian ...
Spinosaurus (/ ˌspaɪnəˈsɔːrəs /; lit. 'spine lizard') is a genus of spinosaurid dinosaur that lived in what now is North Africa during the Cenomanian stage of the Late Cretaceous period, about 100 to 94 million years ago. [4] The genus was known first from Egyptian remains discovered in 1912 and described by German palaeontologist Ernst ...
Bonaparte, 1985. Carnotaurus (/ ˌkɑːrnoʊˈtɔːrəs /; lit. 'meat bull') is a genus of theropod dinosaur that lived in South America during the Late Cretaceous period, probably sometime between 72 and 69 million years ago. The only species is Carnotaurus sastrei. Known from a single well-preserved skeleton, it is one of the best-understood ...
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