Type
Zone
Age range
251.6–251.3 Ma

International Timescale

Early Triassic
Induan

Ammonite Zonation - Boreal

Vavilovites sverdrupi
Proptychites candidus
Proptychites rosenkrantzi strigatus
251.60251.58251.56251.54251.52251.50251.48251.46251.44251.42251.40251.38251.36251.34251.32251.30

Macrostrat

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