Type
Zone
Age range
246.8–246.5 Ma

International Timescale

Middle Triassic
Anisian
Early Triassic
Olenekian

Ammonite Zonation - Boreal

Lenotropites caurus
Siberlingites mulleri
246.80246.78246.76246.74246.72246.70246.68246.66246.64246.62246.60246.58246.56246.54246.52246.50

Macrostrat

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