Type
Zone
Age range
118–116.8 Ma

International Timescale

Early Cretaceous
Aptian

Ammonite Zonation - Boreal

Hypacanthoplites jacobi
Parahoplites nutfieldiensis
Epicheloniceras martinoides
118.0118.0118.0117.9117.8117.8117.8117.7117.7117.6117.5117.5117.5117.4117.3117.3117.3117.2117.2117.1117.0117.0117.0116.9116.8116.8116.8

Macrostrat

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