Type
Zone
Age range
473.7–470.3 Ma

International Timescale

Middle Ordovician
Dapingian
Early Ordovician
Floian

Conodont Zonation

Microzarkodina flabellum/Tripodus laevus
Reutterodus andinus
Oepikodus communis
473.8473.6473.4473.2473.0472.8472.6472.4472.2472.0471.8471.6471.4471.2471.0470.8470.6470.4470.2

Macrostrat

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