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How Many Mass Extinctions Have There Been On Earth?
Earth has a long and dramatic history, and one recurring theme is extinction. Did you know that over the last 500 million years, our planet experienced five major mass extinction events? These events ...
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Scientists warn Earth is entering a sixth mass extinction
Scientists Warn Earth Is Entering a Sixth Mass Extinction ...
A pair of Sacabambaspis fish, around 35 cm in length, which had distinct, forward-facing eyes and an armored head. No fossils of animals like Sacabambaspis from after the Late Ordovician Mass ...
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