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Prehistoric Scratchpad
PhBP
First period of the Proterozoic Eon. The Great Oxygenation Event and beginning of the Huronian Ice Age occurred at this time.

Siderian Period Web PagesEdit

ClassificationEdit

  • Paleoproterozoic Era - Era that saw the Great Oxygenation Event, followed by the first Snowball Earth period.
    • Statherian Period (1.8-1.6 BYA) - Period that marked the beginning of the "Boring Billion" years, where oxygen levels dropped and evolution stagnated.
    • Orosirian Period
    • Rhyacian Period
    • Siderian Period (2.5-2.3 BYA) - First period of the Proterozoic Eon. The Great Oxygenation Event and beginning of the Huronian Ice Age occurred at this time.

Siderian Period In the NewsEdit

Sample (Year)Edit

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