Study: About 2.5 billion T. Rex roamed Earth but not at once
Fox News
One Tyrannosaurus rex seems scary enough. Now picture 2.5 billion of them. That’s how many of the fierce dinosaur king probably roamed Earth over the course of a couple million years, a new study finds.
"That’s a lot of jaws," said study lead author Charles Marshall, director of the University of California Museum of Paleontology. "That’s a lot of teeth. That’s a lot of claws." The species roamed North America for about 1.2 million to 3.6 million years, meaning the T. rex population density was small at any one moment. There would be about two in a place the size of the Washington, D.C., or 3,800 in California, the study said.
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