February 15, 2008

Did Dinosaurs Wear Woolies?

Well, considering sheep wouldn’t evolve for millions of years, probably not. But scientists do think they may have had a need for them. You are probably used to imagining dinosaurs roaming around in tropical forests that were warm and hospitable to the prehistoric beasts. But scientists have discovered that this wasn’t always the case. Dinosaurs also lived in some very unlikely places, including the South Pole!

Hundreds of millions of years ago, when these giant (and some not so giant) beasts roamed Earth, the continents were not in the same locations they are now. The continents are actually plates of rock that glide on a plastic-like molten layer found underneath them. The science of the movement of these plates is called plate tectonics. Look it up on the Net if you want to learn more about it. It’s pretty cool. If it sounds unbelievable, don’t worry. No one believed the first scientist that came up with the theory either!

But now, back to dinosaurs… When dinosaurs lived, Australia and Antarctica were actually linked together. They weren’t separate continents as they are now. During that period of time, the climate was warmer than it is now, but it still wasn’t very balmy in Antarctica! But despite this fact, scientists have found fossil evidence that dinosaurs did roam near the South Pole. The fossils scientists found were actually fossilized footprints of a type of dinosaur called a theropod (a group of upright dinosaurs that included the ferocious T.Rex). Scientists think that these dinosaurs must have had special adaptations to withstand the cold, as well as super night-vision that helped them see during the dark Antarctic winters. Cool! Or should I say, Cold!?

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