Type
Zone
Age range
136.8–135.6 Ma

International Timescale

Early Cretaceous
Valanginian

Ammonite Zonation - Boreal

Dichotomites
Prodichotomites
Polyptychites
136.8136.8136.8136.7136.7136.6136.6136.5136.4136.4136.3136.3136.3136.2136.2136.1136.1136.0135.9135.9135.8135.8135.8135.7135.7135.6135.6

Macrostrat

Data

Platform

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