Were dinosaurs headed for extinction even before massive asteroid strike? Scientists offer new clues
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A paleontologist at the Natural History Museum in London chronicles the age of the famous and fascinating massive reptiles Allosaurus Riley Black - Science Correspondent Dinosaurs thrived on our ...
The end of the dinosaurs was clearly linked to an asteroid impact that brought the Cretaceous period to a close. But the details of their end have remained a matter of debate since the impact crater ...
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