Read more about the Ordovician mass extinction here.
Video: The Ordovician Mass Extinction
400 million years before the K-Pg boundary, the world was already testing out its appetite for apocalypse with a little-known event called the Late Ordovician mass extinction.

Dominic Grose

Dominic has a degree from the University of Winchester in film production and is currently studying for his second degree in biology at the Open University.
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Dominic has a degree from the University of Winchester in film production and is currently studying for his second degree in biology at the Open University.View full profile
Dominic has a degree from the University of Winchester in film production and is currently studying for his second degree in biology at the Open University.
View full profileUPDATEDJuly 4, 2025


