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Intervals
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NP13
310
Type
Zone
Age range
50.65–48.8
Ma
International Timescale
Eocene
Ypresian
Calcareous Nannoplankton Zones
NP14
NP13
NP12
50.7
50.6
50.5
50.4
50.3
50.2
50.1
50.0
49.9
49.8
49.7
49.6
49.5
49.4
49.3
49.2
49.1
49.0
48.9
48.8
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