Type
Zone
Age range
470.3–468.7 Ma

International Timescale

Middle Ordovician
Darriwilian
Dapingian

Conodont Zonation

Histiodella altifrons
Microzarkodina flabellum/Tripodus laevus
Reutterodus andinus
470.3470.2470.1470.0469.9469.8469.7469.6469.5469.4469.3469.2469.1469.0468.9468.8468.7

Macrostrat

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