Type
Epoch
Age range
501–486.85 Ma

International Timescale

Early Ordovician
Tremadocian
Furongian
Stage 10
Jiangshanian
Paibian
Miaolingian
Guzhangian
Drumian

Russian Epochs

Early Ordovician
Late Cambrian
Middle Cambrian
501500499498497496495494493492491490489488487

Macrostrat

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