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Ordovician (488 mya - 444 mya) (sep 19, 488000000 BC – may 20, 444000000 BC)

Description:

Invertebrates dominated the oceans (mostly molluscs and arthropods)

Added to timeline:

Earth Geologic History

13 Dec 2018

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467

Date:

sep 19, 488000000 BC

may 20, 444000000 BC

~ 5883516 years

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