Type
Zone
Age range
304–303.7 Ma

International Timescale

Pennsylvanian
Gzhelian
Kasimovian

Conodont Zonation

Streptognathodus simulator
Streptognathodus firmus
Idiognathodus toretzianus
304.00303.98303.96303.94303.92303.90303.88303.86303.84303.82303.80303.78303.76303.74303.72303.70

Macrostrat

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