Type
Zone
Age range
251.8–251.6 Ma

International Timescale

Early Triassic
Induan

Ammonite Zonation - Boreal

Proptychites candidus
Proptychites rosenkrantzi strigatus
Ophiceras commune
251.80251.79251.78251.77251.76251.75251.74251.73251.72251.71251.70251.69251.68251.67251.66251.65251.64251.63251.62251.61251.60

Macrostrat

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