About 200 million years ago, a giant meat-eating dinosaur -- one so large it was about twice as long as a giraffe is tall -- left behind three-toed footprints as it trekked across the muddy ground, according to a new study.
About 200 million years ago, a giant meat-eating dinosaur -- one so large it was about twice as long as a giraffe is tall -- left behind three-toed footprints as it trekked across the muddy ground, according to a new study.
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