Type
Zone
Age range
427.7–427 Ma

International Timescale

Wenlock
Homerian

Conodont Zonation

Kockelella variabilis variabilis
Kockelella crassa
Kockelella ortus obsidata
427.7427.6427.6427.6427.5427.4427.4427.4427.3427.3427.2427.1427.1427.1427.0

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