CHIBA, JAPAN - JULY 13: A Spinosaurus model is installed at Makuhari Messe on July 13, 2009 in Chiba, Japan. The model of the Spinosaurus, one of the largest carnivorous dinosaurs, was installed for the exhibition "Dinosaurs 2009", which will be on from July 18 to September 27. (Photo by Junko Kimura/Getty Images)
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