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Intervals
Macrostrat
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NP10
313
Type
Zone
Age range
56–54.09
Ma
International Timescale
Eocene
Ypresian
Paleocene
Thanetian
Calcareous Nannoplankton Zones
NP11
NP10
NP9
56.0
55.9
55.8
55.7
55.6
55.5
55.4
55.3
55.2
55.1
55.0
54.9
54.8
54.7
54.6
54.5
54.4
54.3
54.2
54.1
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