Type
Zone
Age range
127.3–125.5 Ma

International Timescale

Early Cretaceous
Barremian
Hauterivian

Ammonite Zonation - Boreal

Parancyloceras bidentatum/Parancyloceras scalare
Simanocyloceras stolleyi
Ancyloceras inexum/S. pingue
127.3127.2127.1127.0126.9126.8126.7126.6126.5126.4126.3126.2126.1126.0125.9125.8125.7125.6125.5

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