A Tyrannosaurus seems scary enough. Now imagine 2.5 billion of them. A new study found that this is how many ferocious dinosaur kings roamed the earth over the course of millions of years.
According to a study published in the journal Science on Thursday, a research team at the University of California, Berkeley used calculations based on body size, sexual maturity, and bioenergy requirements to calculate that Tyrannosaurus rex lived for 127,000 generations. This is the first number of its kind, but it is only an estimation error. The error range is the size of Tyrannosaurus Rex.
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Charles Marshall, curator of the Paleontology Museum at the University of California and lead author of the study, said: “This is really jaw-dropping.” “That’s a lot of teeth. That’s a lot of claws.”
This species has roamed North America for approximately 1.2 to 3.6 million years, which means that the population density of Tyrannosaurus rex is very small at any moment. The study said that there are about two in a place, the size of Washington, D.C., or 3,800 in California.
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Kristi Curry Rogers, a paleontologist at Macalester College, said: “Probably like many people, I did make two attempts to make sure that when I read 2.5 billion Tyrannosaurus for the first time, My eyes have not deceived me.” Not part of this research.
Marshall said that this estimate can help scientists calculate the preservation rate of Tyrannosaurus rex fossils and highlight how lucky the world is to learn about them. About 100 types of Tyrannosaurus rex fossils have been discovered-32 of them have enough material to prove that they are adult. He said that if Rex Rex has 2.5 million instead of 2.5 billion, then we may never know their existence.
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Marshall’s team used general biological rules of thumb to calculate populations, which states that the larger the animal, the lower the population density. Then, they increased the estimate of the energy required for the survival of the Carnivorous Tyrannosaurus-between the Komodo dragon and the lion. The more energy required, the smaller the population. They also believed that Tyrannosaurus rex reached sexual maturity around 14 to 17 years old and could live up to 28 years.
Taking into account the uncertainty of the generation length, range and roaming time of these creatures, the Berkeley team stated that the total population may be as little as 140 million, or as much as 42 billion, with a median value of 2.4 billion.
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James Farlow, a professor of geology at Purdue University, said that the science of the largest carnivore of all time is important, “but, as far as I know, the truth is that this kind of thing is very cool.”