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Intervals
Macrostrat
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G. kugleri/M. aragonensis CRZ
1532
Type
Zone
Age range
44.4–43.6
Ma
International Timescale
Eocene
Lutetian
Planktic Foraminiferal Primary Biozones
A. topilensis PRZ
G. kugleri/M. aragonensis CRZ
G. nuttalli LOZ
44.4
44.4
44.3
44.3
44.2
44.1
44.1
44.0
44.0
44.0
43.9
43.9
43.8
43.8
43.7
43.6
43.6
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