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A 2016 estimate put the number of dinosaur species living in the Mesozoic at 1,543–2,468, [24] [25] compared to the number of modern-day birds (avian dinosaurs) at 10,806 species. [26] Extinct dinosaurs, as well as modern birds, include genera that are herbivorous and others carnivorous, including seed-eaters, fish-eaters, insectivores, and ...
Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. 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.
List of dinosaur genera; List of informally named dinosaurs; List of dinosaur species on display; Lists of dinosaur specimens; List of non-avian dinosaur species preserved with evidence of feathers; List of fictional dinosaurs
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. [2]
Paleontologists classified a new species of sauropod that now ranks as Australia's largest dinosaur. The species was known as Australotitan cooperensis. Behemoth 98-foot-long dinosaur confirmed to ...
North American herbivorous dinosaurs from this time period include the titanosaur sauropod Alamosaurus, the ceratopsians Bravoceratops, Regaliceratops, Triceratops, Leptoceratops, Torosaurus, Nedoceratops, Tatankaceratops (the latter two possible species of Triceratops), and Ojoceratops, the pachycephalosaurs Pachycephalosaurus, Stygimoloch ...
Giant ‘megaraptor’ dinosaur species discovered in Australia. Vishwam Sankaran. February 20, 2025 at 3:28 AM. Giant 20-foot-long raptor dinosaurs once roamed Australia, ...
Push aside imagery of the towering Tyrannosaurus rex because the smallest-ever dinosaur eggs have been unearthed and represent an all new type of dinosaur species. Six small non-avian dinosaur ...