Type
Zone
Age range
397.5–395 Ma

International Timescale

Early Devonian
Emsian

Conodont Zonation

Polygnathus costatus patulus
Linguipolygnathus serotinus
Polygnathus inversus
397.6397.4397.2397.0396.8396.6396.4396.2396.0395.8395.6395.4395.2395.0

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