Type
Zone
Age range
274.5–274.4 Ma

International Timescale

Guadalupian
Roadian
Cisuralian
Kungurian

Conodont Zonation

Jinogondolella nankingensis
Mesogondolella lamberti-Neostreptognathodus sulcoplicatus
Sweetognathus guizhouensis
274.50274.50274.49274.49274.48274.48274.47274.46274.46274.45274.45274.44274.44274.44274.43274.43274.42274.42274.41274.40274.40

Macrostrat

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