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Albertosaurines, or dinosaurs of the subfamily Albertosaurinae, lived in the Late Cretaceous of United States and Canada. The subfamily was first used by Philip J. Currie , Jørn H. Hurum , and Karol Sabath as a group of tyrannosaurid dinosaurs.
Like albertosaurines, tyrannosaurines also had heterodont dentition, large heads design to catch and kill their prey, and short didactyl arms. Based on the growth stages of Tyrannosaurus (and possibly Tarbosaurus [20]), tyrannosaurines undergone ontogenetic changes from gracile or slender, semi-longirostrine immatures to robust, heavy-headed ...
The other major subfamily of tyrannosaurids is Tyrannosaurinae, which includes members like Daspletosaurus, Tarbosaurus, and Tyrannosaurus. Compared with the more robust tyrannosaurines, albertosaurines had slender builds, with proportionately smaller skulls and longer bones of the lower legs and feet (metatarsals and phalanges). [28] [40]
The debate about whether Tyrannosaurus was a predator or a pure scavenger is as old as the debate about its locomotion. Lambe (1917) described a good skeleton of Tyrannosaurus ' s close relative Gorgosaurus and concluded that it and therefore also Tyrannosaurus was a pure scavenger, because the Gorgosaurus ' s teeth showed hardly any wear. [126]
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.
On August 12, 1990, Susan Hendrickson -- a fossil hunter -- discovered three huge bones protruding out of a cliff near Faith, South Dakota. Those burned turned out to be part of the largest ever T ...
Tyrannosaurus was named by Henry Fairfield Osborn in 1905, along with the family Tyrannosauridae. [17] The name is derived from the Ancient Greek words τυραννος tyrannos ('tyrant') and σαυρος sauros ('lizard'). The superfamily name Tyrannosauroidea was first published in a 1964 paper by the British paleontologist Alick Walker. [18]
Mounted skeletons of Tyrannosaurus (left) and Apatosaurus (right) at the AMNH. Dinosaurs are a diverse group of reptiles of the clade Dinosauria. They first appeared during the Triassic period, between 243 and 233.23 million years ago, although the exact origin and timing of the evolution of dinosaurs is the subject of active research.