The First Mass Extinction: The Ordovician Event Explained

Discover the dramatic story of Earth's first mass extinction event, which occurred about 444 million years ago at the end of the Ordovician period. Learn how rapid climate cooling and glaciation led to the extinction of about 85% of marine species, and understand the significant impact this event had on the evolution of life on our planet.

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Ordovician mass extinction
first mass extinction
marine species extinction
climate cooling
glaciation
ancient extinction events
Earth's history
Ordovician period
mass extinction causes
extinction phases
CO2 levels
atmospheric changes
evolution of life
prehistoric climate change
biodiversity loss
geological history
extinct marine species
Ordovician-Silurian event
mass extinction impact
early Earth events

Limit 70 Kevin MacLeod (incompetech.com)
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