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Intervals
Macrostrat
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CC2
347
Type
Zone
Age range
141.12–137.41
Ma
International Timescale
Early Cretaceous
Berriasian
Calcareous Nannoplankton Zones
CC3
CC2
CC1
141.2
141.0
140.8
140.6
140.4
140.2
140.0
139.8
139.6
139.4
139.2
139.0
138.8
138.6
138.4
138.2
138.0
137.8
137.6
137.4
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