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Macrostrat
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N. acostaensis/G. lenguaensis CRZ
1559
Type
Zone
Age range
9.83–6.13
Ma
International Timescale
Miocene
Messinian
Tortonian
Planktic Foraminiferal Primary Biozones
G. extremus PRZ - Atlantic
N. acostaensis/G. lenguaensis CRZ
G. trilobus PRZ
9.8
9.6
9.4
9.2
9.0
8.8
8.6
8.4
8.2
8.0
7.8
7.6
7.4
7.2
7.0
6.8
6.6
6.4
6.2
6.0
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