Type
Zone
Age range
234–233.5 Ma

International Timescale

Late Triassic
Carnian

Ammonite Zonation - Boreal

Tropites dilleri
Sirenites nanseni
Austrotrachyceras obesum
234.02234.00233.98233.96233.94233.92233.90233.88233.86233.84233.82233.80233.78233.76233.74233.72233.70233.68233.66233.64233.62233.60233.58233.56233.54233.52233.50233.48

Macrostrat

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