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Dinosaurs ruled the planet for about 165 million years. They became extinct about 65 million years ago and scientists believe it was as a result of an asteroid crashing into the planet
http://answers.ask.com/Science/Nature/how_long_did...
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None are still categorized as "dinosaurs" but there are many decedents of many dinosaur species still alive. My favorite is the chicken; it's the closest living relative
http://wiki.answers.com/Q/What_dinosaurs_is_still_...
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There are no more dinos because the race was supposedly destroyed by an asteroid impact. This caused the food to become scarce and the dinosaurs went extinct. ANS2: There are still
http://wiki.answers.com/Q/Why_are_there_no_dinosau...
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Actually its not a dinosaur but an insect or the invertebrates but the first dinosaur were the Guang Long(The first evolution of the T-rex like Luci and Todays human).
http://wiki.answers.com/Q/What_is_the_first_dinosa...
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