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At present, two species of Tyrannosaurus are considered valid; the type species, T. rex, and the earlier in age and more recently discovered T. mcraeensis. 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.
Part of the campaign was a dinosaur sticker book action by the Dutch largest supermarket chain, Albert Heijn, centred on the new skeleton and using Wikipedia images. In September 2016 Dutch media reported that Trix's arrival in Leiden had resulted in €1.3 million of "free publicity" for the museum.
Dinosaur coloration is generally one of the unknowns in the field of paleontology, as skin pigmentation is nearly always lost during the fossilization process. However, recent studies of feathered dinosaurs and skin impressions have shown the colour of some species can be inferred through the use of melanosomes , the colour-determining pigments ...
Tyrannosaurus, like most dinosaurs, was long thought to have an ectothermic ("cold-blooded") reptilian metabolism but was challenged by scientists like Robert T. Bakker and John Ostrom in the early years of the "Dinosaur Renaissance", beginning in the late 1960s.
The 1998 4-episode television special Dinosaurs: Inside and Out extensively discussed Sue, mentioning the now-disproven theory that it was killed by a bite to the back of the head by another T. rex. [citation needed] Sue was the subject of a 2000 educational computer game called I See SUE, which was published by Simon and Schuster Interactive. [59]
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]