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Facts about T Rex

Analysis of a shred of 68-million-year-old Tyrannosaurus rex protein - along with that of 21 modern species and an extinct mastodon - confirms that dinosaurs share common ancestry with birds, particularly chickens and ostriches, and to a lesser extent, alligators.Apr 24, 2008

Tyrannosaurus rex, or T. rex for short, was a dinosaur that lived on Earth about 65 to 70 million years ago, during the Cretaceous period. T. rex is one of the largest carnivorous (meat-eating) dinosaurs ever discovered.

T. rex went extinct during the K-T mass extinction, about 65 million years ago. This extinction killed the remaining dinosaurs (not just T. rex) and many other animal and plant groups. This extinction was probably caused by a catastrophic asteroid colliding with Earth.

Tyrannosaurus rex lived in forested river valleys in North America during the late Cretaceous period. It became extinct about 65 million years ago in the Cretaceous-Tertiary mass extinction.Sep 10, 2010

While the sharp teeth and jaw of a T. rex is obviously that of a fearsome superpredator and the blunt teeth of a Triceratops obviously belong to a plant eater, a lot of dinosaur teeth fall somewhere in the middle. ... Many of the supposedly carnivorous therapod dinosaurs were actually eating plants.Dec 20, 2010

A Tyrannosaurus rex unearthed in Montana has undergone a sex change now that scientists have discovered a way to tell the gender of fossilized dinosaurs. Named Bob—after its discoverer, paleontologist Bob Harmon—the remarkably well preserved Jurassic giant has turned out to be a female.Jun 2, 2005

Tyrannosaurus rex was one of the largest meat-eating dinosaurs that ever lived. ... Tyrannosaurus rex lived in forested river valleys in North America during the late Cretaceous period. It became extinct about 65 million years ago in the Cretaceous-Tertiary mass extinction.Sep 10, 2010

The largest carnivore that ever walked the planet – Tyrannosaurus rex – is more closely related to the modern chicken than it is to living reptiles such as the alligator or crocodile, a study of the dinosaur's fossilised protein has found.Apr 24, 2008

Tyrannosaurus rex, or T. rex for short, was a dinosaur that lived on Earth about 65 to 70 million years ago, during the Cretaceous period. T. rex is one of the largest carnivorous (meat-eating) dinosaurs ever discovered.

Similar to the initial idea that T. rex used its arms to hold its mate, some have suggested that the arms kept prey in place—a study from 1990 hypothesized that the arms could maneuver at least 400 pounds—or provided lift when the animal stood up on two legs, assuming the animals ever sat on the ground.Apr 15, 2014

Fossil evidence shows that Tyrannosaurus was about 40 feet (12 meters) long and about 15 to 20 feet (4.6 to 6 meters) tall. Its strong thighs and long, powerful tail helped it move quickly, and its massive 5-foot-long (1.5-meter-long) skull could bore into prey.Sep 10, 2010