Dinosaurs are a various gathering of creatures of the clade Dinosauria. They initially showed up amid the Triassic period, 231.4 million years back, and were the overwhelming physical vertebrates for 135 million years, from the begin of the Jurassic (around 200 million years prior) until the end of the Cretaceous (66 million years ago),
when the Cretaceous–Paleogene eradication occasion prompted
the termination of most dinosaur gatherings toward the end of the Mesozoic Era. Until the late twentieth century, all gatherings were accepted to be terminated; in any case, the fossil record shows that flying creatures are advanced feathered dinosaurs, having developed from theropod predecessors amid the Jurassic Period.[2] As such, winged creatures were the main dinosaurs to survive the mass eradication occasion
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