(Translated by https://www.hiragana.jp/)
20 million years ago - the geological timescale - Wikimedia toolserver

20 million years ago

by Smith609, design adapted from Luxo's

on the international stratigraphic timescale 
When Phanerozoic era, Cenozoic eon, Neogene period, Miocene subperiod, Early Miocene epoch
Timeline
20 Ma
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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20 Ma
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
 
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Million years ago
Compiled using data from the GeoWhen database. Discuss or improve this implementation by Martin Smith.
Geological timescale is licensed under a Creative Commons Attribution-Share Alike 3.0 Unported LicenseCreative Commons License.