Type
Age
Age range
451–450 Ma

International Timescale

Late Ordovician
Katian

COSUNA

Maysvillian
Edenian
Shermanian

North American Regional

Maysvillian
Edenian
Mohawkian
451.0450.9450.9450.9450.8450.8450.7450.6450.6450.6450.5450.4450.4450.4450.3450.3450.2450.1450.1450.1450.0

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