Terms: tyrannosaurus
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• Science > Biology > Dinosaurs > Tyrannosaurus rex

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1. Tyrannosaurus rex (EnchantedLearning.com)
   Provides diagrams and other information on Tyrannosaurus rex and other dinosaurs. Includes a search engine that checks for spelling errors. 10-00

2. Tyrannosaurus rex Ancestor Had Feathers (Nature.com)
   "Ancestors of the fearsome Tyrannosaurus rex were clothed in delicate feathers, a fossil discovered in China suggests. The find may come as a surprise to people used to images of Tyrannosaurus as a scaly monster. But many palaeontologists [sic] have been predicting just such a find ever since the first evidence of a dinosaur with a feathery coat came from the same site in Liaoning in 1995."
   
   "The 130 million-year-old fossil is the oldest member recorded from the tyrannosauroid family, and the first in the group with a feather-like covering." "Paleontologist" is the correct spelling in the United States. 10-04

3. Tyrannosaurus rex (American Museum of Natural History)
   "Almost everything about this dinosaur -- the four-foot-long jaw, the six-inch-long teeth, and the huge thigh bones -- bespeaks the enormous power of Tyrannosaurus rex, one of the largest theropod (or meat-eating) dinosaurs that ever existed." Visitors sometimes misspell as Tyranosaurus or Tyranosorus. 02-06

4. Tyrannosaurus rex (FieldMuseum.org)
   "Tyrannosaurus rex (ty-RAN-o-sawr-us) meaning "king tyrant lizard" because of its size and large teeth and claws (Greek tyrannos = 'tyrant' + sauros = 'lizard'; Latin rex = 'king'), also known colloquially as 'T. rex' and 'The King of the Dinosaurs', was a giant carnivorous theropod dinosaur from the Upper Maastrichtian, the last stage of the Cretaceous period, 68–65 million years ago." 02-06

5. Dinosaurs Q-Z (EnchantedLearning.com)
   Provides a comprehensive and well-organized study of dinosaurs and other prehistoric creatures, oriented to children and teens. Includes Quaesitosaurus, Quetzalcoatlus, Rhamphorhynchus, Riojasaurus, Saltopus, Saurolophus, Sauropelta, Scipionyx, Seismosaurus, Sinornithosaurus, Sinosauropteryx, Spinosaurus, Stegoceras, Stegosaurus, Styracosaurus, Suchomimus, Supersaurus, Syntarsus, Thecodontosaurus, Triceratops, Tröodon, Tyrannosaurus rex, Ultrasauros, Unenlagia, Utahraptor, Variraptor, Velociraptor, Wannanosaurus, Xiaosaurus, Yangchuanosaurus, and Zigongosaurus. Visitors sometimes misspell tyrannosaurus as tyranosaurus, tyranosauras, or tyrannosauras. Sometimes called T. rex or T rex. 10-00

6. -03-25-05 Dinosaur "Flesh" Found in a Surprise Discovery (CBS News)
   "In an announcement that conjured up thoughts of the movie 'Jurassic Park,' researchers revealed they had recovered soft tissues that resemble blood vessels and even cells from a 70-million-year-old Tyrannosaurus rex."
   
   "They don't know if they'll be able to recover DNA — the blueprint to life that was the key to recreating the giant animals in the fictional film." 3-05

7. -02-08-06 Earliest Known T. rex Dinosaur Found (Nature.com)
   "Ask any dinner-party palaeontologist and they'll tell you that, despite its star turn in Jurassic Park, Tyrannosaurus rex didn't live in the Jurassic period. But now a team in China has found a tyrannousaur that did, and it gives us valuable clues about the rise of this clan of prehistoric predators."
   
   "The new species, found in Xinjiang province in northwestern China, lived around 160 million years ago. This makes it more than twice as old as T. rex, and the most primitive known member of the family." 02-06

8. Spinosaurus May Have Towered Over T-Rex Dinosaur (Guardian Unlimited)
   "The spinosaurus - now officially the biggest predatory dinosaur known to man - measured 17 metres (55ft) from nose to tail, had long, crocodile-like jaws, and is thought to have had a sail on its back." 02-06

9. Dinosaur DNA Yields a Surprise (Livescience.com)
   "Scientists used to think that relatively shorter genomes were associated with flight."
   
   "But the new finding by Chris Organ of Harvard University and his colleagues complicates this thinking and shows that the shorter genomes of birds originated in saurischian dinosaurs, the group of dinosaurs from which birds evolved and that includes Tyrannosaurus rex. So rather than being a characteristic of birds or flying animals, short genomes should be thought of as a characteristic of dinosaurs, including the killer theropod dinosaurs, he said."

10. -09-17-09 Miniature T. Rex Discovered (USA Today)
    "Tyrannosaurus Rex's likely ancestors started small, but perfectly armed, some 125 million years ago, dinosaur researchers reported Thursday.Puny arms, massive jaws, swift legs — all the ingredients of the king of the carnivores — adorned a newly discovered dinosaur, Raptorex kriegsteini, reported by the journal Science. But Raptorex was only about 1/90 the size of Tyrannosaurus, and flourished about 40 million years before T.Rex appears in the fossil record." 09-09