Type
Zone
Age range
238.3–238 Ma

International Timescale

Middle Triassic
Ladinian

Ammonite Zonation - Boreal

Frankites sutherlandi
Macl. maclearni
Meginoceras meginae
238.30238.28238.26238.24238.22238.20238.18238.16238.14238.12238.10238.08238.06238.04238.02238.00

Macrostrat

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