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Intervals
Macrostrat
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C12n
1389
Type
Sub-age
Age range
31.034–30.591
Ma
International Timescale
Oligocene
Rupelian
Geomagnetic Polarity Subchron
C11r
C12n
C12r
31.04
31.02
31.00
30.98
30.96
30.94
30.92
30.90
30.88
30.86
30.84
30.82
30.80
30.78
30.76
30.74
30.72
30.70
30.68
30.66
30.64
30.62
30.60
30.58
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