Type
Zone
Age range
419–417.2 Ma

International Timescale

Early Devonian
Lochkovian

Conodont Zonation

Caudicriodus postwoschmidti
Caudicriodus hesperius
Oulodus elegans detortus
419.0418.9418.8418.7418.6418.5418.4418.3418.2418.1418.0417.9417.8417.7417.6417.5417.4417.3417.2

Macrostrat

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