Tyrannosaurus rex was a giant, meat-eating dinosaur that walked on two legs and had a long tail and a big head with sharp teeth (and, yes, two little arms). The name Tyrannosaurus rex comes from the Greek words tyranno (“tyrant”) and saurus (“lizard”) and the Latin word rex (“king”). So, Tyrannosaurus rex means something like “king of the tyrant lizards.” It is commonly called T. rex for short. The name is fitting: Tyrannosaurus rex is one of the largest land predators that has ever lived. It was the largest of the tyrannosaurs, reaching a length of 47 feet (14.3 m) or more. People often list the T. rex as their favorite dinosaur, and its popularity has grown through many pop culture depictions, such as its appearances in the Jurassic Park series of movies and books. However, to be scientifically precise about it, the T. rex lived during the Late Cretaceous period, about 90-65 million years ago, around the end of the age of dinosaurs. There have been many attempts to render what Tyrannosaurus rex may have really looked like based on fossil evidence and acquired knowledge of dinosaur anatomy. Though early movie depictions of T. rex made it look like a big green lizard standing upright, modern depictions are usually more accurate due to being done with the help of paleontologists.T he first documented Tyrannosaurus rex fossils were discovered in Montana by paleontologist Barnum Brown, who would find more T. rex fossils over the next several years. Brown worked for the American Museum of Natural History, and the director of the museum, Henry Fairfield Osborn, is the one who gave the giant dinosaur its name in 1905. Tyrannosaurus rex fossils have been found in the northwestern United States and parts of Canada. Based on fossil evidence, Tyrannosaurus rex grew to an average of 40 feet long and 12-15 feet tall, weighing an average of 14,000-18,000 pounds (6,400-8,200 kilograms). Tyrannosaurus rex was an especially muscular, scaly dinosaur that was bipedal (meaning it walked upright on two legs) with a large head and famously tiny forelimbs (arms). Tyrannosaurus rex was a carnivore and had an incredibly powerful jaw filled with long, razor-sharp teeth that it used to kill prey and tear flesh, which it would swallow in large pieces, bones and all, since it could not chew. Tyrannosaurus rex was a solitary animal that found food both as a scavenger, eating already dead animals, and as a fearsome predator that hunted and ate large herbivores such as Triceratops and Edmontosaurus. They sometimes even hunted each other. Due to its massive size, Tyrannosaurus rex is thought to have been a slow runner (about as fast as a human), and it is believed that it only lived to be 28 years old at most. Scientists are unsure of the exact mating habits of Tyrannosaurus rex but, as is presumed for all dinosaurs, it did lay eggs. Compared to most other dinosaurs, Tyrannosaurus rex is among those that lived most recently. Because of this, paleontologists have been able to piece together nearly complete skeletons of the massive lizard king that have amazed museum visitors for years. Its popularity has contributed to the strong interest in dinosaurs and dinosaur fossils and the enduring popularity of dinosaurs in pop culture and the public imagination.
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Tyrannosaurus rex was a giant, meat-eating dinosaur that walked on two legs and had a long tail and a big head with sharp teeth (and, yes, two little arms).
The name Tyrannosaurus rex comes from the Greek words tyranno (“tyrant”) and saurus (“lizard”) and the Latin word rex (“king”). So, Tyrannosaurus rex means something like “king of the tyrant lizards.” It is commonly called T. rex for short.
The name is fitting: Tyrannosaurus rex is one of the largest land predators that has ever lived. It was the largest of the tyrannosaurs, reaching a length of 47 feet (14.3 m) or more.
People often list the T. rex as their favorite dinosaur, and its popularity has grown through many pop culture depictions, such as its appearances in the Jurassic Park series of movies and books. However, to be scientifically precise about it, the T. rex lived during the Late Cretaceous period, about 90-65 million years ago, around the end of the age of dinosaurs.
There have been many attempts to render what Tyrannosaurus rex may have really looked like based on fossil evidence and acquired knowledge of dinosaur anatomy. Though early movie depictions of T. rex made it look like a big green lizard standing upright, modern depictions are usually more accurate due to being done with the help of paleontologists.T
he first documented Tyrannosaurus rex fossils were discovered in Montana by paleontologist Barnum Brown, who would find more T. rex fossils over the next several years. Brown worked for the American Museum of Natural History, and the director of the museum, Henry Fairfield Osborn, is the one who gave the giant dinosaur its name in 1905.
Tyrannosaurus rex fossils have been found in the northwestern United States and parts of Canada. Based on fossil evidence, Tyrannosaurus rex grew to an average of 40 feet long and 12-15 feet tall, weighing an average of 14,000-18,000 pounds (6,400-8,200 kilograms). Tyrannosaurus rex was an especially muscular, scaly dinosaur that was bipedal (meaning it walked upright on two legs) with a large head and famously tiny forelimbs (arms). Tyrannosaurus rex was a carnivore and had an incredibly powerful jaw filled with long, razor-sharp teeth that it used to kill prey and tear flesh, which it would swallow in large pieces, bones and all, since it could not chew. Tyrannosaurus rex was a solitary animal that found food both as a scavenger, eating already dead animals, and as a fearsome predator that hunted and ate large herbivores such as Triceratops and Edmontosaurus. They sometimes even hunted each other. Due to its massive size, Tyrannosaurus rex is thought to have been a slow runner (about as fast as a human), and it is believed that it only lived to be 28 years old at most. Scientists are unsure of the exact mating habits of Tyrannosaurus rex but, as is presumed for all dinosaurs, it did lay eggs.
Compared to most other dinosaurs, Tyrannosaurus rex is among those that lived most recently. Because of this, paleontologists have been able to piece together nearly complete skeletons of the massive lizard king that have amazed museum visitors for years. Its popularity has contributed to the strong interest in dinosaurs and dinosaur fossils and the enduring popularity of dinosaurs in pop culture and the public imagination.
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