Type
Zone
Age range
227.3–224.5 Ma

International Timescale

Late Triassic
Norian
Carnian

Ammonite Zonation - Boreal

Malayites dawsoni
Stikinoceras kerri
Klamathites macrolobatus
227.4227.2227.0226.8226.6226.4226.2226.0225.8225.6225.4225.2225.0224.8224.6224.4

Macrostrat

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