Tyrannosaurus rex was one of the most ferocious predators to ever walk the Earth. With a massive body, sharp teeth, and jaws so powerful they could crush a car, this famous carnivore dominated the forested river valleys in western North America during the late Cretaceous period, 68 million years ago.

AUBURN, Wash. (AP) - A track for live horse racing in suburban Seattle turned prehistoric over the weekend as more than 200 people ran down the track cloaked in inflatable Tyrannosaurus rex dinosaur costumes.

“Tyrannosaurus” is Greek for “tyrant lizard,” and “rex” means “king” in Latin. So, Tyrannosaurus rex was “King of the Tyrant Lizards.”

A new study estimates 1.7 billion Tyrannosaurus rexes roamed the earth between 66 million and 68 million years ago, but scientists have recovered fewer than 100 of them.

Incredible Dinosaur Facts for Kids

• The word dinosaur comes from the Greek language.
• Dinosaurs ruled the Earth for more than 150 million years.
• Dinosaurs became extinct about 65.5 million years ago.
• Baby tyrannosaurs were probably adorable.
• The largest land-based dinosaur was the Argentinosaurus huinculensis.

Tyrannosaurus is a genus of large theropod dinosaur. The species Tyrannosaurus rex (rex meaning "king" in Latin), often called T. rex or colloquially T-Rex, is one of the best represented theropods.

Packs of small mammals would have competed with dinosaurs for food. And carnivorous mammals would have preyed on dinosaur eggs. Not only did mammals likely compete with dinosaurs for resources, many species survived the end-Cretaceous extinction and subsequently came to dominate Earth.

What does 🦖 T-Rex emoji mean? Depicting an image of a friendly-looking Tyrannosaurus Rex dinosaur, the T-rex emoji is used to share information or enthusiasm about dinosaurs … in general. Related words: t-rexed. t-rexting.

“Tyrannosaurus is the name of the genus. The rex identifies a species within that genus.”

The most complete skeleton of Deinonychus ever found was named Hector, and now belongs to a private collector. This dino's name is quite a mouthful! Discovered in Brazil in 2021, it is the rarest dinosaur, and lived between 70 and 80 million years ago. Palaeontologists think it was toothless.

Gobi desert Discovered in the Gobi desert region of Mongolia and China, Tarbosaurus is the T. rex of Asia. It looks very similar to T. rex, and is even similar in size, around 40 feet.

Main characteristics dinosaurs share: They had an upright stance, with legs perpendicular to their body. This is the main feature that sets dinosaurs apart from other reptiles. Like other reptiles, they laid eggs. With the exception of some birds, for example penguins, dinosaurs lived on land, not in the sea.

Dinosaurs lived between 230 and 65 million years ago, in a time known as the Mesozoic Era. The earliest known avian dinosaur is 150 million years old: Archaeopteryx had birdlike wings and a long, bony dinosaur tail.

Unlike other dinosaurs, tyrannosaurs had serrated D-shaped teeth, allowing these meat-eaters to scrape, pull, slice, tear and crush their prey. They also had fused nasal bones in their skulls, which strengthened their snouts and gave them a stronger bite.

A study published in the journal Evolutionary Biology has proposed splitting Tyrannosaurus rex into three different species - a redefined T. rex, T. regina and T. imperator - based on differences in their leg bones and teeth.

In terms of longevity and diversity the most successful group of dinosaurs were the therapods. They were bipedal and mainly carnivorous and dominated the land from around 200 million years ago right up to the extinction of the dinosaurs some 65 million years ago.