Type
Zone
Age range
147.4–147.2 Ma

International Timescale

Late Jurassic
Tithonian

Ammonite Zonation - Boreal

Galbanites kerberus
Galbanites okusensis
Glaucolithites glaucolithus
147.40147.39147.38147.37147.36147.35147.34147.33147.32147.31147.30147.29147.28147.27147.26147.25147.24147.23147.22147.21147.20

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