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Mortoniceras rostratum
900
Type
Zone
Age range
101.7–101.3
Ma
International Timescale
Early Cretaceous
Albian
Ammonite Zonation - Boreal
Mortoniceras perinflatum
Mortoniceras rostratum
Mortoniceras fallax
101.70
101.68
101.66
101.64
101.62
101.60
101.58
101.56
101.54
101.52
101.50
101.48
101.46
101.44
101.42
101.40
101.38
101.36
101.34
101.32
101.30
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