Periods in geologic time scale

Enter the name of all periods in geologic time scale

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Last updated: December 21, 2025

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Hint	Answer
The current period	Quaternary
First great apes appear	Neogene
Antarctic glaciation starts	Paleogene
Last period before dinosaurs went extinct	Cretaceous
In the name of a movie	Jurassic
Dinosaurs Appeared	Triassic
Pangea forms	Permian
Moss appears	Carboniferous
Marine life diversified	Devonian
Climates stabilized	Silurian
Fungi appears	Ordovician
Massive diversification of complex life	Cambrian
Ozone layer forms	Ediacaran
First animals evolve	Cryogenian
Major diversification of microscopic life	Tonian
Rodinia forms	Stenian
A day lasted 18 hours	Ectasian
Supercontinent columbia breaks up	Calymmian
First eukaryotes	Stratherian
End of the great oxidation event	Orosirian
Huronian glaciation ends	Rhyacian
Beginning of the great oxidation event	Siderian

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