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apr 27, 400000000 BC - Trilobite family Trinucleidae

Description:

https://samnoblemuseum.ou.edu/understanding-extinction/mass-extinctions/end-ordovician-extinction/

Added to timeline:

Kyle Subido

ByKyleConrad Subido
26 Oct 2018

Date:

apr 27, 400000000 BC
Now
~ 5883516 years ago

Images:

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