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Historic Supercontinents

List the supercontinents that have previously existed on Earth.
Some supercontinents formed once, then became part of a larger continent, and then broke away again. For such supercontinents, the initial time of their formation is listed, not the time they broke away from the larger continent.
"Ma" = Million years ago
"Ga" = Billion years ago
Information according to various sources
Quiz by MyMindWentBlank
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Last updated: August 19, 2016
First submittedAugust 19, 2016
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Believed Time of Formation
Supercontinent
~ 3.6 Ga (hypothesized)
Vaalbara
~ 3 Ga (hypothesized)
Ur
~ 2.7 Ga
Kenorland
~ 1.8 Ga
Columbia
~ 1.1 Ga
Rodinia
~ 750 Ma
Proto-Laurasia
~ 650 Ma
Pannotia
~ 570 Ma
Gondwana
~ 500 Ma
Laurasia
~ 270 Ma
Pangaea
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