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Tyrannosaurus rex
15-april t-rexes.jpg
General Information
Universe Real life
Aliases T. rex
Classification Tyrannosaurus rex
Species Type Tyrannosaur
Homeworld Earth
Intelligence Non-Sapient
Sapient
Biochemistry Carbon-based lifeform
Biological Information
Reproduction Sexual; lay eggs
Locomotion Bipedal
Quadrupedal
Feeding Behavior Carnivorous
Distinctive Features Bipedal Stance, Quadrupedal Stance, Tiny Arms, Big Arms, Various Superpowers
Lineage Information
Cultural Information
Alignment True Neutral
Affiliation(s) Independent
Sociocultral characteristics
Scientific Taxonomy
Planet Earth
Domain Eukaryota
Kingdom Animalia
Subkingdom Eumetazoa
Infrakingdom Bilateria
Superphylum Deuterostomia
Phylum Chordata
Subphylum Vertebrata
Infraphylum Gnathostomata
Superclass Tetrapoda
Class Reptilia
Subclass Archosauria
Infraclass Avemetatarsalia
Superorder Dinosauria
Order Saurischia
Suborder Eusaurischia
Infraorder Theropoda
Superfamily Tyrannosauroidea
Family Tyrannosauridae
Subfamily Tyrannosaurinae
Tribe Tyrannosaurini
Genus Tyrannosaurus
Species T. rex
Other Information
Status Extinct
Endangered

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. Tyrannosaurus lived throughout what is now western North America, on what was then an island continent known as Laramidia. Tyrannosaurus had a much wider range than other tyrannosaurids. Fossils are found in a variety of rock formations dating to the Maastrichtian age of the Upper Cretaceous period, 68 to 66 million years ago. It was the last known member of the tyrannosaurids and among the last non-avian dinosaurs to exist before the Cretaceous–Paleogene extinction event.

Like other tyrannosaurids, Tyrannosaurus was a bipedal carnivore with a massive skull balanced by a long, heavy tail. Relative to its large and powerful hind limbs, the forelimbs of Tyrannosaurus were short but unusually powerful for their size, and they had two clawed digits. The most complete specimen measures up to 12.3 meters (40 feet) in length, though T. rex could grow to lengths of over 12.3 m (40 ft), up to 3.96 m (13 ft) tall at the hips, and according to most modern estimates 6 metric tons (6.6 short tons) to 8 metric tons (8.8 short tons) in weight. Although other theropods rivaled or exceeded Tyrannosaurus rex in size, it is still among the largest known land predators and is estimated to have exerted the strongest bite force among all terrestrial animals. By far the largest carnivore in its environment, Tyrannosaurus rex was most likely an apex predator, preying upon hadrosaurs, juvenile armored herbivores like ceratopsians and ankylosaurs, and possibly sauropods. Some experts have suggested the dinosaur was primarily a scavenger. The question of whether Tyrannosaurus was an apex predator or a pure scavenger was among the longest debates in paleontology. Most paleontologists today accept that Tyrannosaurus was both an active predator and a scavenger.

Specimens of Tyrannosaurus rex include some that are nearly complete skeletons. Soft tissue and proteins have been reported in at least one of these specimens. The abundance of fossil material has allowed significant research into many aspects of its biology, including its life history and biomechanics. The feeding habits, physiology, and potential speed of Tyrannosaurus rex are a few subjects of debate. Its taxonomy is also controversial, as some scientists consider Tarbosaurus bataar from Asia to be a second Tyrannosaurus species, while others maintain Tarbosaurus is a separate genus. Several other genera of North American tyrannosaurids have also been synonymized with Tyrannosaurus.

As the archetypal theropod, Tyrannosaurus has been one of the best-known dinosaurs since the early 20th century and has been featured in film, advertising, postal stamps, and many other media.

Appearance[]

Tyrannosaurus is a huge-bodied reptile with grey skin and teeth.

Gallery[]

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