Paleontologists relied on a new method of estimating extinct populations to peg the number of Tyrannosaurus rexes that terrorized Earth throughout the Cretaceous period at 2.5 billion.
A cast of a T. rex skeleton on display outside the UC Museum of Paleontology at the University of California, Berkeley. The original, a nearly complete skeleton excavated in 1990 from the badlands of eastern Montana, is at the Museum of the Rockies in Bozeman, Montana. (Keegan Houser, UC Berkeley)
(CN) A breakthrough new study has satisfied the long unanswered question of how many T. Rexes lived on Earth in their time, finding that approximately 2.5 billion roamed the Earth over the span of 2½ million years.
Total, All-Time T Rex Population Put at 2 5B
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A total of some 2 5 billion T rex roamed the Earth, study finds
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