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Ancient Aliens S4 Ep10: Aliens and DinosaursAncient alien theorists wonder about the depiction of a stegosaurus in Angkor Wat, the world's largest ancient religious temple, and ask how the ancients could have known about dinosaurs.

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Now PlayingAncient Aliens S4 Ep10: Aliens and DinosaursAncient alien theorists wonder about the depiction of a stegosaurus in Angkor Wat, the world's largest ancient religious temple, and ask how the ancients could have known about dinosaurs.0Ancient Aliens S20 Ep1: The Top Ten Alien InfluencersGiorgio Tsoukalos looks at mysterious teachers who have appeared throughout history, including a biblical patriarch, a race of fish-people and Egypt's most controversial Pharaoh.