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Dinosaur classification began in 1842 when Sir Richard Owen placed Iguanodon, Megalosaurus, and Hylaeosaurus in "a distinct tribe or suborder of Saurian Reptiles, for which I would propose the name of Dinosauria ." [ 1] In 1887 and 1888 Harry Seeley divided dinosaurs into the two orders Saurischia and Ornithischia, based on their hip structure ...
Hadrosaurids (from Ancient Greek ἁδρός (hadrós) 'stout, thick' and σαύρα (saúra) 'lizard'), or duck-billed dinosaurs, are members of the ornithischian family Hadrosauridae. This group is known as the duck-billed dinosaurs for the flat duck-bill appearance of the bones in their snouts. The ornithopod family, which includes genera ...
The closest is the Dinosaur Genera List, compiled by biological nomenclature expert George Olshevsky, which was first published online in 1995 and was regularly updated until June 2021. [ 1 ] [ 2 ] The most authoritative general source in the field is the second (2004) edition of The Dinosauria .
Among living dinosaurs, the bee hummingbird ( Mellisuga helenae) is smallest at 1.9 g (0.067 oz) and 5.5 cm (2.2 in) long. [ 40] The smallest theropod overall (including avians) is the currently extant bee hummingbird at 6.12 cm long and 2.6g for females, and 5.51 cm long and 3.25g for the males.
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 (mya), although the exact origin and timing of the evolution of dinosaurs is a subject of active research. They became the dominant terrestrial vertebrates after the Triassic–Jurassic ...
Thescelosaurus ( / ˌθɛsɪləˈsɔːrəs / THESS-il-ə-SOR-əs; ancient Greek θέσκελος - ( theskelos-) meaning "godlike", "marvellous", or "wondrous" and σαυρος ( sauros) "lizard") [ 5] was a genus of neornithischian dinosaur that appeared at the very end of the Late Cretaceous period in North America. It was a member of the ...
Dinosaur Game. The Dinosaur Game[ 1] (also known as the Chrome Dino) [ 2] is a browser game developed by Google and built into the Google Chrome web browser. The player guides a pixelated t-rex across a side-scrolling landscape, avoiding obstacles to achieve a higher score. The game was created by members of the Chrome UX team in 2014.
Ornithodesmus. Ornithodesmus (meaning "bird link") is a genus of small, dromaeosaurid dinosaur from the Isle of Wight in England, dating to about 125 million years ago. The name was originally assigned to a bird-like sacrum (a series of vertebrae fused to the hip bones), initially believed to come from a bird [1] and subsequently identified as ...
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