Tyrannosaurus rex

 Intro:

Nobody overcomes the king of the monsters, the formidable Tyrannosaurus rex wich means ''king of the tyrants lizards''.It lived throughout what is now western North America, with a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the last three million years of the Cretaceous Period, approximately 68 to 65 million years ago. It was among the last non-avian dinosaurs to exist prior to the Cretaceous–Tertiary extinction event.

Appearance:

In 2004, the scientific journal Nature published a report describing an early tyrannosauroid, Dilong paradoxus, from the famous Yixian Formation of China. As with many other theropods discovered in the Yixian, the fossil skeleton was preserved with a coat of filamentous structures which are commonly recognized as the precursors of feathers. It has also been proposed that Tyrannosaurus and other closely related tyrannosaurids had such protofeathers. However, skin impressions from large tyrannosaurid specimens show mosaic scales.While it is possible that protofeathers existed on parts of the body which have not been preserved, a lack of insulatory body covering is consistent with modern multi-ton mammals such as elephants, hippopotamus, and most species of rhinoceros. As an object increases in size, its ability to retain heat increases due to its decreasing surface area-to-volume ratio. Therefore, as large animals evolve in or disperse into warm climates, a coat of fur or feathers loses its selective advantage for thermal insulation and can instead become a disadvantage, as the insulation traps excess heat inside the body, possibly overheating the animal. Protofeathers may also have been secondarily lost during the evolution of large tyrannosaurids like Tyrannosaurus, especially in warm Cretaceous climates.

Fighting:

In the top of the food chain in it's region, the Tyrannosaurus rex eat herbivores dinosaurs like duck-billed hadrosaurus, but he also eat ceratopsians but he prefers rotting carcass of dinos because it was much easier than fighting to the death against a dinosaur that can kill you easily.So, the tyrannosaurus was not as stupid as it seemed to be, on the contrary, he was a very clever sauriquio thought very carefully before risking to the death.He rarelly fought against one another dino to be able to feed, he struggled against more dinos trying to attack or steal it, for example: A Nanotyrannus stealing food from the tyrannosaurus was not ignored but punished, he would have to fight the tyrannosaurus and would have only one option and who would leave the winner would have food and housing for his opponent, which was almost impossible to win the tyrannosaurus rex, this is one reason to fear him.T-Rex was relatively slow but agile; it would stay hidden and leap out to surprise its prey. Lacking vicious claws, it relied on its teeth, planting its feet and using its powerful neck and legs to stabilize itself and rip into its victim's flesh.

The Tyrannosaurus rex is very famous because it appears in several stories, films and is an attraction in our culture. Want proof? Well talk to palvra dinosaur to anyone you know and then ask what the first thing he thought, and thought that person will speak at rex, here are some films and games when the rex appear:

• In the movie of Steven Spielberg Jurassic Park (1993)
• In the book of Arthur Conan Doyle The lost world (1912)
• In the movie of Steven Spielberg The lost world: jurassic park (1997)
• In the movie of Joe Johnston Jurassic park 3(2001)
• In the game Zoo tycoon: dinosaur digs (2002)
• In the game Zoo tycoon 2: extinct animals (2007)
• In the tv series Jurassic fight club (2008)