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Intervals
Macrostrat
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NP16
307
Type
Zone
Age range
43.39–39.23
Ma
International Timescale
Eocene
Bartonian
Lutetian
Calcareous Nannoplankton Zones
NP17
NP16
NP15
43.4
43.2
43.0
42.8
42.6
42.4
42.2
42.0
41.8
41.6
41.4
41.2
41.0
40.8
40.6
40.4
40.2
40.0
39.8
39.6
39.4
39.2
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