Type
Zone
Age range
128.8–128.2 Ma

International Timescale

Early Cretaceous
Hauterivian

Ammonite Zonation - Boreal

Paracrioceras denckmanni
Paracrioceras elegans
Haplocrioceras fissicostatum
128.80128.75128.70128.65128.60128.55128.50128.45128.40128.35128.30128.25128.20

Macrostrat

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