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Ideas, Inventions And Innovations : 2.5 Billion Tyrannosaurus Rexes Roamed North America over a Period of 2.5 Million Years

Ideas, Inventions And Innovations
2.5 Billion Tyrannosaurus Rexes Roamed North America over a Period of 2.5 Million Years
Over approximately 2.5 million years, North America likely hosted 2.5 billion Tyrannosaurus rexes, a minuscule proportion of which have been dug up and studied by paleontologists, according to a UC Berkeley study.
Image by Julius Csotonyi, courtesy of Science magazine
How many Tyrannosaurus rexes roamed North America during the Cretaceous period?
That’s a question Charles Marshall pestered his paleontologist colleagues with for years until he finally teamed up with his students to find an answer.
What the team found, to be published this week in the journal Science, is that about 20,000 adult T. rexes probably lived at any one time, give or take a factor of 10, which is in the ballpark of what most of his colleagues guessed. ....

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Scientists Estimate All-time T. Rex Population Was 2.5 Billion

Scientists Estimate All-time T. Rex Population Was 2.5 Billion
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A new study suggests that up to 2.5 billion Tyrannosaurus Rex dinosaurs lived on Earth over a period of a few million years.
However, the research shows that not many of these powerful creatures lived in the same place at the same time.
Tyrannosaurus Rex, commonly known as T. rex, existed on Earth for millions of years. Scientists involved in the study estimate about 2.5 billion of them lived over a period of 2.4 million years. The dinosaurs mostly lived in the area of the world now known as North America. ....

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Latest Research Shows That Around 2.5 Billion T. Rexes Once Roamed The Earth | News

Latest Research Shows That Around 2.5 Billion T. Rexes Once Roamed The Earth | News
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United States , Charles Marshall , University Of California , University Of California Museum Paleontology , Tyrannosaurus Rex , California Museum , ஒன்றுபட்டது மாநிலங்களில் , சார்லஸ் மார்ஷல் , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா , பல்கலைக்கழகம் ஆஃப் கலிஃபோர்னியா அருங்காட்சியகம் பேலீயஂடாலொஜீ , டைரநஸரஸ் ரெக்ஸ் , கலிஃபோர்னியா அருங்காட்சியகம் ,

Study: 2.5 billion Tyrannosaurus rex roamed Earth, but not all at once

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In this Tuesday, March 7, 2006 file photo, life-sized Tyrannosaurus rex models are unloaded for a dinosaur exhibition in Potsdam, Germany. (AP Photo/Sven Kaestner)
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. ....

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Research Reveals 2.5 Billion T. Rexes Once Inhabited Earth

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A recent study from the University of California, Berkeley has revealed that over the course of a few million years, an approximate 2.5 billion Tyrannosaurus rexdinosaurs roamed the Earth.
The research factored in the 127,000 generations, the 1.2 million to 3.6 million years of their existence, along with its sexual maturity of 14 to 17 years, and max life span of 28 years. Due to the size of the T-Rex, it was also determined that the carnivore required a substantial amount of energy, which ultimately means a lower population density it was worked out that there was an estimated two in a place the size of Washington, D.C., or 3,800 in California. ....

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