Type
Zone
Age range
249.9–249.3 Ma

International Timescale

Early Triassic
Olenekian
Induan

Ammonite Zonation - Boreal

Euflemingites romunderi
Hedenstroemia hedenstroemi
Vavilovites sverdrupi
249.90249.85249.80249.75249.70249.65249.60249.55249.50249.45249.40249.35249.30

Macrostrat

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