From Discovery News:
Non-avian dinosaurs became extinct 65 million years ago, and now researchers have proven that this die-off didn't happen over a long period of time.
A detailed look at dinosaur bones, tracks and eggs located at 29 archaeological sites located in the Catalan Pyrenees reveals that there was a large diversity of dinosaur species living there just before the fatal K-T extinction event, which many scientists believe was caused by several large meteors hitting Earth.
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