Catastrophic volcanic eruptions about 250 million years ago spewed enough lava to cover Australia, triggering Earth's worst mass extinction, in which 90 percent of sea creatures were wiped off the face of the planet, scientists say.
Catastrophic volcanic eruptions about 250 million years ago spewed enough lava to cover Australia, triggering Earth's worst mass extinction, in which 90 percent of sea creatures were wiped off the face of the planet, scientists say.
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