The new two-legged dinosaur, which lived about 200 million years ago, suggests dinosaurs lived in herds and that the beasts advanced quickly across the globe after a mass extinction claimed at least half of all species on Earth, researchers say.
The new two-legged dinosaur, which lived about 200 million years ago, suggests dinosaurs lived in herds and that the beasts advanced quickly across the globe after a mass extinction claimed at least half of all species on Earth, researchers say.
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