Tyrannosaurus ‭(‬Tyrant lizard‭)

Short Info

Tyrannosaurus ‭(‬Tyrant lizard‭)

Phonetic : Ty-ran-no-sore-us

Named By : Henry Fairfield Osborn‭ ‬-‭ ‬1905

Diet : Carnivore

Size : Estimated 12 meters long

Type of Dinosaur : Large Theropod

Type Species : T. rex (type)

Found in : Canada, USA

When it Lived : Late Cretaceous, 68-66 million years ago

Tyrannosaurus is the name of a species belonging to large theropod dinosaurs. The species Tyrannosaurus Rex (rex which means “king” in Latin) is often referred to as T. rex or colloquially T-Rex is among the most accurately represented theropods. Tyrannosaurus was found throughout the western part of North America, on what was once an island continent named Laramidia. Tyrannosaurus was much larger in area of coverage than other Tyrannosaurids. Fossils can be found in a myriad of rock formations dating back to the Maastrichtian timeframe in the Upper Cretaceous period, 68 to 66 million years ago. It was the last member of the tyrannosaurids as well as one of the few dinosaurs that were not avian that existed prior to the Cretaceous-Paleogene extinction.


Tyrannosaurus Rex HolotypeScottRobertAnselmo, CC BY-SA 3.0, via Wikimedia Commons


Like all tyrannosaurids Tyrannosaurus was an animal that was bipedal, having massive skulls, accompanied by a massive, long tail. In comparison to its massive and powerful hind limbs the front limbs of Tyrannosaurus were small, but strong for their size, and they were equipped with two clawed fingers. The largest specimen measured as high as 12.3 metres (40 feet) in length. However, T. Rex was able to increase to lengths exceeding 12.3 meters (40 feet) and up to 3.96 meters (13 feet) in height at the hips and, according to the most recent estimates, it weighed between 6 meters (6.6 short tons) to 8 metric tonnes (8.8 small tonnes) to weight. Although other theropods competed with or surpassed Tyrannosaurus rex’s size, it’s one of the most massive predators of the land and is believed to have exerted the most powerful bite force of all terrestrial mammals. The largest carnivore found in the environment, Tyrannosaurus rex was most likely to be an apex predator preying on hadrosaurs, juvenile armored herbivores, such as ceratopsians or ankylosaurs. It is also possible that sauropods were preying. Certain scientists have suggested that the dinosaur was mostly as a hunter. The debate over the question of whether Tyrannosaurus could be considered an apex predator, or a pure scavenger was amongst the longest-running arguments in the paleontology field. The majority of paleontologists today believe the fact that Tyrannosaurus was both a active predator as well as a scavenger.

The specimens of Tyrannosaurus Rex include those that have skeletons nearly complete. Proteins and soft tissue have been identified within at the very least one specimen. The wealth of fossils has enabled substantial research into numerous aspects of its biology including its life-history and biomechanics. The eating habits, physiology and the potential speed of Tyrannosaurus Rex are among the areas of discussion. The taxonomy of this species is also controversial in that some scientists believe Tarbosaurus bataar of Asia to be a different Tyrannosaurus species, while other claim that Tarbosaurus is an entirely separate Genus. Other kinds that are part of North American tyrannosaurids have also been compared to Tyrannosaurus.

As the most iconic theropod, Tyrannosaurus is one of the most popular dinosaurs since the beginning of the 20th century. It has been featured in films advertisements, postcards, commercials and many other media.

Source: Wikipedia