Fresh fossil analyses suggest the Kotlin Crisis 550 million years ago wiped out up to 80% of marine species, making it Earth's earliest known mass extinction. This overturns the long-standing view ...
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Scientists found what may be Earth's first mass extinction and it was more catastrophic than anyone realized
Scientists Found What May Be Earth's First Mass Extinction and It Was More Catastrophic Than Anyone Realized ...
Everyone knows that dinosaurs are extinct, and most people have some idea about how it might have occurred. But the exact periods in history when it happened are less well known. Was it a single ...
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