Type
Zone
Age range
234.6–234 Ma

International Timescale

Late Triassic
Carnian

Ammonite Zonation - Boreal

Sirenites nanseni
Austrotrachyceras obesum
Tachyceras desatoyense
234.60234.55234.50234.45234.40234.35234.30234.25234.20234.15234.10234.05234.00

Macrostrat

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