What was Tyrannosaurus Rex
Tyrannosaurus Rex was part of a group called tyrannosauridae which includes less famous relatives like Guanlong, Tarbosaurus, Zhuchengtyrannus, and still there are more. Tyrannosaurus Rex means “Tyrant lizard king” — it’s derived from a combination of greek and latin. it lived 68–66 million years ago, right before the Cretaceous — Paleogene extinction event. Tyrannosaurus Rex fossils are usually found in the Hell Creek Formation which is in North America.

Size and Build
Tyrannosaurus Rex was one of the most biggest theropod, being an absolute unit — weighing at around 10 tons and being 40–43 feet (12–13 meters) long. Tyrannosaurus Rex wasn’t short either, because its hip hight was 12–13 feet (3.6–3.9 meters).

Tyrannosaurus Rex was built like a tank. It had massive muscle attachments in places like the neck, legs, and tails. But it didn’t only have muscles — Tyrannosaurus Rex had heavy dense bones. All of this gave it strength and durability.
Tyrannosaurus Rex also had robust legs, being thick, column-like legs making it have great endurance, but not really fast, seeing that Tyrannosaurus Rex went 20 mph. Tyrannosaurus Rex’s thighs were huge and the primary source of locomotive power — giving powerful bursts of speed when needed. Tyrannosaurus Rex’s 3 toed claws were sharp, and had strong grip and shock absorption.
Tyrannosaurus Rex’s bite may have be the most famous feature, but it can really do that only because of its robust neck. The neck muscles were extremely thick allowing for a better bite and clamp on prey. The massive muscles were anchored into the vertebrae giving an even stronger grip on the skull.
Tail
Tyrannosaurus Rex had a powerful and muscular tail, reinforced with interlocking vertebrae, making it more stiff and powerful than whip-like. It was like a counter weight to the enormous head, allowing Tyrannosaurus Rex to maintain balance while running.
Bite force
Tyrannosaurus Rex had its famous bite force which is anywhere from 35,000 — to all the way up to 60,00. And that’s just average because there are some which standed out for the rest. Here’s a list showing their bite forces:
T-rex Bit force list (Newtons)
Goliath: 63,000
Sue: 60,000
Scotty: 57,000
E.D. Cope: 57,000–64,000
Stan: 57,000
*Remember — anywhere from 55,00 and above is outstanding bite force.

Tyrannosaurus Rex’s skull played a big role in the famous bite force Tyrannosaurus Rex has. Thick, fused bones reduce flex under pressure when T-rex is biting down during a long period of time. Another thing that helps is that the reinforced nasal bones acted like shock absorbents — putting less pressure on the skull. All of these traits made Tyrannosaurus Rex’s skull “crush resistant”.
The jaw was the center of the power. The jaw muscles of Tyrannosaurus Rex were massive and densely packed, especially in the on the side of the skull, which created bites exceeding any land predator ever. The large muscle attachment sites and a deep skull, gave the muscles excellent leverage, letting Tyrannosaurus Rex bite with insane force.
The Myth
Most people think that Tyrannosaurus Rex’s arms were puny and weak. Well, that couldn't be farther from the truth. Tyrannosaurus Rex’s arms were really strong, capable of lifting 400 pounds. They were most likely used for gripping prey during struggles, and helping stand up.
The Thought
Tyrannosaurus rex was one of the most powerful land predators to ever live, built for strength rather than speed.
With bone-crushing jaws, massive muscles, and a perfectly balanced body, it dominated its ecosystem.
It could hunt large prey, scavenge efficiently, and even consume bones for extra nutrients.
More than just a dinosaur, T. rex was a true apex force of nature.

