Tyrannosaurus rex
Tyrannosaurus rex
O Tyrannosaurus rex foi um dos maiores predadores terrestres, com mandíbulas capazes de exercer uma força de mordida de até 12.800 PSI, a mais forte de qualquer animal terrestre conhecido.
Tyrannosaurus () is a genus of large theropod dinosaur. The type species Tyrannosaurus rex (rex meaning 'king' in Latin), often shortened to T. rex or colloquially T-Rex, is one of the best represented theropods. It 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 geological formations which have been dated to the late Maastrichtian age of the late Cretaceous period, 69 to 66 million years ago, with isolated specimens possibly indicating an earlier origin in the middle Campanian age. It was one of the last known members 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 12.3–12.4 m (40–41 ft) in length, but according to most modern estimates, Tyrannosaurus could have exceeded sizes of 13 m (43 ft) in length, 3.7–4 m (12–13 ft) in hip height, and 8.8 t (8.7 long tons; 9.7 short tons) in mass. Although some other theropods might have rivaled or exceeded Tyrannosaurus in size, it is still among the largest known land predators, with its estimated bite force being the largest 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.…
- Família
- Tyrannosauridae
- Ordem
- Saurischia
- Período
- Cretaceous (68.0-66.0 MYA)
- Dieta
- Carnivore
- Comprimento
- 11.5-12.3 m
- Peso
- 5.4-9.5 tons
Fatos científicos
- Possuía visão binocular excelente, com campo visual de 55 graus
- Crescia cerca de 600kg por ano durante a adolescência
- Dentes de até 30cm podiam regenerar ao longo da vida
- Análises isotópicas sugerem metabolismo de sangue quente
- Pegadas fossilizadas indicam velocidade máxima de 20-25 km/h
- Viveu apenas nos últimos 2 milhões de anos do Cretáceo