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Until recently, the earliest known dinosaur was the Eorapter Lunensis "Dawn Raptor" which evolved in the late Triassic Period some227 million years ago. It was a small, carniverous primitive Therapod dinosaur and lived in what is modern day Argentina. It probably grew to about 1 metre in length. However a fossil found in Madagascar recently could date to 230 million years ago (dated using radio-isotope dating). Only 1 jaw bone has been found so far but it appears to be a herbivorous primitive sauropod.

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15y ago

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