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During the timeline of the era, several different events took place, eventually helping to shape the Earth as we know it today.

During the Proterozoic, the Earth had cooled considerably from the previous Hadean eon when the planet was covered by molten lava.

Near the end of the Proterozoic, ice sheets were growing towards the equator, and the entire planet was possibly engulfed under a thin layer of snow and ice.