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jan 1, 48500000 BC - The Earth’s first coral reefs

Description:

Coral reefs first appeared 485 million years ago, at the dawn of the Early Ordovician, displacing the microbial and sponge reefs of the Cambrian

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Geologic History of the Earth - Logan

25 Oct 2021

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Date:

jan 1, 48500000 BC

Now

~ 5883516 years ago

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