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(Q21050119)
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English
Columbian
proposed period of the paleoproterozoic era
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Statements
instance of
period
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system
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proposed entity
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follows
Jatulian
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followed by
Rodinian
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replaces
Orosirian
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start time
2060 million years BCE
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end time
1780 million years BCE
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partially coincident with
Orosirian
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Wikipedia
(1 entry)
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dewiki
Columbium (Periode)
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