As many as 2.5 billion Tyrannosaurus rexes once stalked Earth

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Livescience.com 16 April, 2021 - 11:48am 17 views

How many T rexes were there?

Marshall said the estimate helps scientists figure the preservation rate of T. rex fossils and underscores how lucky the world is to know about them at all. About 100 or so T. rex fossils have been found — 32 of them with enough material to figure they are adults. NBC News2.5 billion T. rex roamed Earth, but not all at once, study finds

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