http://mentalfloss.com/article/57876/10-horned-facts-about-carnotaurus
"Only one Carnotaurus fossil has been found so far, which was by palaeontologist Jose Bonaparte in Argentina in 1985. Amazingly, most of the skeleton, its skull and skin impressions were unearthed. A discovery this detailed is extremely rare in palaeontology."
"lived in South America during the Late Cretaceous period, between about 72 and 69.9 million years ago."
By reconstructing the meat-eating bull’s hindquarters, Persons and Currie have found evidence that this dinosaur was much faster than anyone had thought. Powered by an enormous tail muscle, Carnotaurus was the Usain Bolt of the Cretaceous, well-adapted for short-burst sprinting.
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