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G. pseudomenardii TRZ
1522
Type
Zone
Age range
59.4–55.9
Ma
International Timescale
Eocene
Ypresian
Paleocene
Thanetian
Selandian
Planktic Foraminiferal Primary Biozones
M. velascoensis PRZ
G. pseudomenardii TRZ
M. angulata LOZ
59.4
59.2
59.0
58.8
58.6
58.4
58.2
58.0
57.8
57.6
57.4
57.2
57.0
56.8
56.6
56.4
56.2
56.0
55.8
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