Like Godzilla, but actually real': study shows T. rex numbered 2.5 billion
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Like Godzilla, but actually real': Study shows T. rex numbered 2.5 billion, Taiwan News
Study finds about 2.5 billion T. Rex roamed Earth but not at once: 'That's a lot of jaws
2.5 billion T rex roamed Earth, but not all at once
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Scientists estimate the total number of T. rex to ever live: 2.5 billion, with 20,000 alive at any one time. This suggests an individual T. rex's odds of becoming a fossil were
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