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'Like Godzilla, but actually real': study shows T. rex numbered 2.5 billion


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WASHINGTON If one Tyrannosaurus rex – the school bus-sized meat-eating dinosaur that stalked the Cretaceous Period landscape – seems impressive, how about 2.5 billion of them?
Researchers on Thursday unveiled the first calculation of the total T. rex population during the estimated 2.4 million years that this fearsome species inhabited western North America during the twilight of the age of dinosaurs.
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Like Godzilla, but actually real : study shows T. rex numbered 2.5 billion Back to video
They considered factors including the size of its geographic range, its body mass, growth pattern, age at sexual maturity, life expectancy, duration of a single generation and the total time that T. rex existed before extinction 66 million years ago. They also heeded a doctrine called Damuth’s law linking population to body mass: the bigger the animal, the fewer the ....

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More than 2.5BILLION T-Rexes walked Earth before dinosaurs died out


THE REX FACTOR
More than 2.5BILLION T-Rexes walked Earth before dinosaurs died out – and 20,000 lived at any one time
Chris Pollard
Updated: 15 Apr 2021, 19:42
BILLIONS of T-Rexes roamed the earth, new research has shown.
The giant meat-eating dinosaur - made famous in Jurassic Park - dominated the world during the Cretaceous period.
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Billions of T-Rexes roamed the Earth before the dinosaurs died outCredit: SWNS
Now scientists have calculated that 2.5billion T-Rexes lived and died during their reign, in a new study published in the journal Science.
Palaeontologist Steve Brusatte, author of bestselling The Rise and Fall of the Dinosaurs, said: If one bus-sized T-Rex biting down on you with the force of pickup truck isn’t terrifying enough, imagine that about 20,000 of them were probably out there stalking at any given time. ....

United States , United Kingdom , Charles Marshall , Steve Brusatte , University Of California Museum Paleontology , Jurassic Park , North America , United Kingdom Wide , California Museum , Milky Way , Star Wars Style , Bronze Age , ஒன்றுபட்டது மாநிலங்களில் , ஒன்றுபட்டது கிஂக்டம் , சார்லஸ் மார்ஷல் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா அருங்காட்சியகம் பேலீயஂடாலொஜீ , ஜுராசிக் பூங்கா , வடக்கு அமெரிக்கா , ஒன்றுபட்டது கிஂக்டம் பரந்த , கலிஃபோர்னியா அருங்காட்சியகம் , பால் வழி , நட்சத்திரம் போர்கள் நடை , வெண்கலம் வாழ்நாள் ,

Why muon magnetism matters, and a count of all the Tyrannosaurus rex that ever lived

About 2.5 billion T. Rex roamed Earth but not at once: study


In this Tuesday, March 7, 2006 file photo, life-sized Tyrannosaurus rex models are unloaded for a dinosaur exhibition in Potsdam, Germany. A study released on Thursday, April 15, 2021 calculates that 2.5 billion Tyrannosaurus rex prowled North America over a couple million years or so, with maybe 20,000 at any given time.
AP
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.
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 Thursday’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. ....

United States , James Farlow , Charles Marshall , University Of California , Purdue University , Macalester College , University Of California Museum Paleontology , One Tyrannosaurus , California Museum , North America , Kristi Curry Rogers , ஒன்றுபட்டது மாநிலங்களில் , ஜேம்ஸ் பாரிலோவ் , சார்லஸ் மார்ஷல் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , பர்‌ட்யூ பல்கலைக்கழகம் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா அருங்காட்சியகம் பேலீயஂடாலொஜீ , கலிஃபோர்னியா அருங்காட்சியகம் , வடக்கு அமெரிக்கா , கிறிஸ்டி கறி ரோஜர்ஸ் ,