Type
Subchron
Age range
166.72–166.64 Ma

International Timescale

Middle Jurassic
Bathonian

Geomagnetic Polarity Subchron

M39n.6n
M39r
M40n.1n
166.72166.72166.71166.71166.70166.69166.69166.69166.68166.68166.67166.66166.66166.66166.65166.65166.64

Macrostrat

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