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Intervals
Macrostrat
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C9n
1399
Type
Sub-age
Age range
27.439–26.42
Ma
International Timescale
Oligocene
Chattian
Rupelian
Geomagnetic Polarity Subchron
C8r
C9n
C9r
27.4
27.4
27.4
27.3
27.3
27.2
27.1
27.1
27.1
27.0
26.9
26.9
26.9
26.8
26.8
26.7
26.6
26.6
26.6
26.5
26.4
26.4
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