Type
Subchron
Age range
138.66–138.42 Ma

International Timescale

Early Cretaceous
Berriasian

Geomagnetic Polarity Subchron

M13n
M13r
M14n
138.67138.66138.65138.64138.63138.62138.61138.60138.59138.58138.57138.56138.55138.54138.53138.52138.51138.50138.49138.48138.47138.46138.45138.44138.43138.42138.41

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