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Intervals
Macrostrat
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CC20
329
Type
Zone
Age range
79.13–77.56
Ma
International Timescale
Late Cretaceous
Campanian
Calcareous Nannoplankton Zones
CC21
CC20
CC19
79.2
79.1
79.0
78.9
78.8
78.7
78.6
78.5
78.4
78.3
78.2
78.1
78.0
77.9
77.8
77.7
77.6
77.5
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