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Tyrannosaurus specimen AMNH 5027 at the American Museum of Natural History. With a length of 12.1-12.2 meters, AMNH 5027 was discovered and excavated in 1908 by Barnum Brown in Montana, and described by Osborn in 1912 and 1916.
N/A TMP 82.18.227 [3] Royal Tyrrell Museum of Paleontology [4] Centrosaurus. Canada A round exostosis formed on the shaft of this specimen's ulna. N/A TMP 85.112.39 [5] Royal Tyrrell Museum of Paleontology [4] Pachyrhinosaurus n. sp. Campanian. Wapiti Formation. Canada One of the rearward left dorsal ribs has a false joint. N/A TMP 85.112.52 [5]
With the possible exception of Raptorex, [17] it is widely assumed that the Asian specimens are early growth stages of Tarbosaurus, [18] [19] [20] whereas the North American specimens are those of Tyrannosaurus. [21] [22] Skeletal diagrams showing holotype remains of Lythronax (A) and a Teratophoneus specimen (B). N–P show selected bones of ...
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.
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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 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]
Taxon Locality Material Notes Images Triceratops sp. [2] [4]: 2 miles south of Elephant Butte USNM 243, dorsal vertebral centrum; This genus, Torosaurus or a novel taxon ...