Type
Zone
Age range
226.5–221.4 Ma

International Timescale

Late Triassic
Norian

Conodont Zonation

Epigondolella triangularis
Epigondolella quadrata
Metapolygnathus primitius
226.6226.4226.2226.0225.8225.6225.4225.2225.0224.8224.6224.4224.2224.0223.8223.6223.4223.2223.0222.8222.6222.4222.2222.0221.8221.6221.4221.2

Macrostrat

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