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C9r
1398
Type
Sub-age
Age range
27.859–27.439
Ma
International Timescale
Oligocene
Rupelian
Geomagnetic Polarity Subchron
C9n
C9r
C10n.1n
27.86
27.84
27.82
27.80
27.78
27.76
27.74
27.72
27.70
27.68
27.66
27.64
27.62
27.60
27.58
27.56
27.54
27.52
27.50
27.48
27.46
27.44
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