Type
Zone
Age range
401–397.5 Ma

International Timescale

Early Devonian
Emsian

Conodont Zonation

Linguipolygnathus serotinus
Polygnathus inversus
Eocostapolygnathus nothoperbonus
401.0400.8400.6400.4400.2400.0399.8399.6399.4399.2399.0398.8398.6398.4398.2398.0397.8397.6397.4

Macrostrat

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