Lexicon
Intervals
Macrostrat
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Proterozoic
131
Type
Eon
Age range
2500–538.8
Ma
International Timescale
also
International Eons
Phanerozoic
Paleozoic
Proterozoic
Neoproterozoic
Mesoproterozoic
Paleoproterozoic
Archean
Neoarchean
2,500
2,400
2,300
2,200
2,100
2,000
1,900
1,800
1,700
1,600
1,500
1,400
1,300
1,200
1,100
1,000
900
800
700
600
500
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