Tyrannosaurus Rex, also known as T. rex, was a large carnivorous dinosaur that lived around 68 to 66 million years ago during the Late Cretaceous Period. It is one of the most well-known and iconic dinosaurs.

T. rex was about 40 feet long and could weigh up to 9 tons, making it one of the largest meat-eating dinosaurs. It had a massive skull that measured about 5 feet long, filled with sharp, serrated teeth. These teeth were perfectly adapted for tearing apart the flesh of its prey.

Despite its size and weight, T. rex was surprisingly fast and could run at speeds of up to 20 to 25 miles per hour. It had long, powerful hind limbs that allowed it to take large strides and chase down its prey.

Tyrannosaurus Rex was an apex predator, meaning it was at the top of the food chain in its ecosystem. It likely hunted and fed on other dinosaurs, including herbivorous dinosaurs like Triceratops and hadrosaurs.

Fossils of Tyrannosaurus Rex have been found in North America, particularly in the western United States. These fossils have provided scientists with valuable information about the anatomy, behavior, and lifestyle of this magnificent dinosaur.