Type
Zone
Age range
137.41–132.97 Ma

International Timescale

Early Cretaceous
Valanginian
Berriasian

Calcareous Nannoplankton Zones

CC4
CC3
CC2
137.6137.4137.2137.0136.8136.6136.4136.2136.0135.8135.6135.4135.2135.0134.8134.6134.4134.2134.0133.8133.6133.4133.2133.0132.8

Macrostrat

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