Lexicon
Intervals
Macrostrat
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C8n.1n
1403
Type
Sub-age
Age range
25.264–25.099
Ma
International Timescale
Oligocene
Chattian
Geomagnetic Polarity Subchron
C7Ar
C8n.1n
C8n.1r
25.27
25.26
25.25
25.24
25.23
25.22
25.21
25.20
25.19
25.18
25.17
25.16
25.15
25.14
25.13
25.12
25.11
25.10
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