Type
Zone
Age range
163.67–161.99 Ma

International Timescale

Middle Jurassic
Callovian

Calcareous Nannoplankton Zones

NJ14
NJ13
NJ12
163.7163.6163.5163.4163.3163.2163.1163.0162.9162.8162.7162.6162.5162.4162.3162.2162.1162.0

Macrostrat

Data

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