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In western North America during the twilight of the dinosaur age, the unquestioned ruler was Tyrannosaurus rex, one of the largest terrestrial predators in Earth's history. Researchers have ...
Gorgosaurus (/ ˌ ɡ ɔːr ɡ ə ˈ s ɔːr ə s / GOR-gə-SOR-əs; lit. ' dreadful lizard ') is a genus of tyrannosaurid theropod dinosaur that lived in western North America during the Late Cretaceous Period (), between about 76.5 and 75 million years ago. [1]
Torvosaurus (/ ˌ t ɔːr v oʊ ˈ s ɔːr ə s /) is a genus of large megalosaurine theropod dinosaur that lived approximately 165 to 148 million years ago during the Callovian to Tithonian ages of the late Middle and Late Jurassic period in what is now Colorado, Portugal, Germany, and possibly England, Spain, Tanzania, and Uruguay.
Nanuqsaurus lived alongside many other dinosaurs during what is referred to as the Edmontonian faunal stage of the early Late Maastrichtian. Having resided at an estimated 80°–85°N paleolatitude, the area Nanuqsaurus thrived in experienced climatic extremes unlike that experienced by most other dinosaurs. The temperature of this Northern ...
Tyrannosauroidea (meaning 'tyrant lizard forms') is a superfamily (or clade) of coelurosaurian theropod dinosaurs that includes the family Tyrannosauridae as well as more basal relatives.
Daspletosaurus (/ d æ s ˌ p l iː t ə ˈ s ɔːr ə s / das-PLEET-ə-SOR-əs; meaning "frightful lizard") is a genus of tyrannosaurid dinosaur that lived in Laramidia between about 78 and 74.4 million years ago, during the Late Cretaceous Period.
Over half of the known T. rex specimens appear to have died within six years of reaching sexual maturity, a pattern that is also seen in other tyrannosaurs and in some large, long-lived birds and mammals today. These species are characterized by high infant mortality rates, followed by relatively low mortality among juveniles.
Tyrannosaurus (/ t ɪ ˌ r æ n ə ˈ s ɔː r ə s, t aɪ-/) [a] 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.