Lexicon
Intervals
Macrostrat

M38n.1r

1193

Type

Subchron

Age range

164.05–163.99 Ma

International Timescale

Middle Jurassic

Callovian

Geomagnetic Polarity Subchron

M38n.1n

M38n.1r

M38n.2n

Macrostrat

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