Article: Dancing with the dinos: scientists step up research on reptile footprints.

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Where do tyrannosaurs tango and stegosaurs salsa? On the dino dance floor!

Scientists recently discovered a big area in Arizona with at least 1,000 large holes that may be dinosaur footprints. They called the spot the dino dance floor because it looks as if the ancient reptiles boogied up a storm there.

Despite the nickname, scientists say dinos probably headed to that area for a more important reason than dancing--water. Millions of years ago, a desert covered what is now the southwestern part of the United States. The dino dance floor might have been an oasis. That is a place in a desert where plants and water can be ...

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