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jan 15, 444079083 BC - End Ordovician - Graptolite

Description:

444,000,000 years ago, 86% species lost. Graptolites were sea creatures. Over a million years ago, their demise was caused by a severe ice age that lowered sea levels.

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Geological Time Scale

ByEmaan Siddiqi
26 Oct 2018
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Date:

jan 15, 444079083 BC
Now
~ 5883516 years ago
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