Type
Subchron
Age range
139.59–138.91 Ma

International Timescale

Early Cretaceous
Berriasian

Geomagnetic Polarity Subchron

M14n
M14r
M15n
139.6139.6139.5139.4139.4139.3139.3139.3139.2139.2139.1139.1139.0138.9138.9

Macrostrat

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