229 An approximately 67 million-year-old Tyrannosaurus rex skeleton, one of the largest, most complete ever discovered and named STAN after paleontologist Stan Sacrison who first found it, is seen on display ahead of its public auction at Christie s in New York City. REUTERS
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.
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
Like Godzilla, but actually real : study shows T rex numbered 2 5 billion
japantimes.co.jp - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from japantimes.co.jp Daily Mail and Mail on Sunday newspapers.
Study: 2 5 billion T rex roamed Earth
limaohio.com - get the latest breaking news, showbiz & celebrity photos, sport news & rumours, viral videos and top stories from limaohio.com Daily Mail and Mail on Sunday newspapers.
2021/04/17 17:51 Sue the T-rex at Chicago s Field Museum. Sue the T-rex at Chicago s Field Museum. (Wikimedia Commons photo)
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.
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 individuals.