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Triceratops' name means "three-horned face". Triceratops is classed as one of the frilled Ceratopsians of the order Ornithischia, which have bird-like bone structures. This giant herbivore walked on four legs and would have used its horns to fight off attackers.The frills were likely to have been used to regulate the animal's body temperature, or perhaps in territorial fights among males, but no-one really knows for sure.Dinosaurs lived about 225 million years ago, in the Mesozoic era, which is made up of the Triassic, Jurassic and Cretaceous periods. It is thought likely that the dinosaurs were wiped out around 65 million years ago, when many plants and animals died as a result of climatic changes brought about by a meteor striking the earth, but no one knows what really happened.
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