More than 2 5BILLION T-Rexes walked Earth before dinosaurs died out thesun.co.uk - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from thesun.co.uk Daily Mail and Mail on Sunday newspapers.
• Source: Associated Press
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. Life-sized Tyrannosaurus rex models are unloaded for a dinosaur exhibition in Potsdam, Germany, in 2006. Source: Associated Press
Using calculations based on body size, sexual maturity and the creatures energy needs, a team at the University of California, Berkeley figured out just how many T. rex lived over 127,000 generations, according to a study in today s journal Science. It’s a first-of-its-kind number, but just an estimate with a margin of error that is the size of a T. rex.
Study: 2 5 billion T rex roamed Earth, but not all at once | 100 5 The Eagle – Jonesboro, AR eagle1005.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from eagle1005.com Daily Mail and Mail on Sunday newspapers.
Researchers now have an estimate for just how many T. rex once roamed Earth
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Billions of Tyrannosaurus rex roamed North America during their fascinating reign as top predators, according to a team of researchers that went about the daunting task of making the calculation.
Paleontologists from the University of California, Berkeley, set out to put a number on how many T. rex lived during the Cretaceous period about 65 million to 98 million years ago knowing that it wouldn’t be a simple task.
Fossils have long been used to deepen our understanding about extinct creatures such as dinosaurs, but experts say it can be challenging to use these remains to calculate population density and abundance.
USA TODAY
“That’s a lot of jaws,” said study lead author Charles Marshall. “That’s a lot of teeth. That’s a lot of claws.”
The species roamed North America for a few million years.
The authors estimated that the species population density was about 3,800 T. rex in an area the size of California.
We all know that the most terrifying dinosaur of them all – Tyrannosaurus rex – once roamed the Earth. But just how many of these fearsome beasts were there?
According to a new study that estimated the population traits of the iconic, long-extinct species, over their entire late-Cretaceous-Era reign, the total number of Tyrannosaurus rex that ever lived on Earth was roughly 2.5 billion.