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Eras

Paleozoic

pay-lee-uh-ZOH-ik

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The first era of visible life, opening with the Cambrian explosion and closing with the worst mass extinction Earth has recorded. It holds the Cambrian period, among others.

Facts
Rank
Era 1
Start (Million Years Ago)
538.8 1
End (Million Years Ago)
251.9 1
Key Event
Life colonizes land, fish, plants and later reptiles, ending in the Permian mass extinction, the largest die-off in the fossil record. 1
Cross-Tradition Connections

Encompasses

Cambrian, Eras
Source Geologic Time Scale (Wikipedia)
Carboniferous, Eras
Devonian, Eras
Ordovician, Eras
Permian, Eras
Silurian, Eras

In Discipline

Geochronology, Disciplines
Source Geologic Time Scale (Wikipedia)

Part Of

Phanerozoic, Eras
Source Geologic Time Scale (Wikipedia)
Sources
1. Geologic Time Scale (Wikipedia)
Wikimedia FoundationView the Source
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