Type
Age
Age range
492–486.85 Ma

International Timescale

Early Ordovician
Tremadocian
Furongian
Stage 10
Jiangshanian

Siberian Regional

Batyrbaian
Aksaian

Russian Stages

Tremadocian
Batyrbaian
Aksaian
492.2492.0491.8491.6491.4491.2491.0490.8490.6490.4490.2490.0489.8489.6489.4489.2489.0488.8488.6488.4488.2488.0487.8487.6487.4487.2487.0486.8

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