Type
Zone
Age range
193.8–192.8 Ma

International Timescale

Early Jurassic
Pliensbachian
Sinemurian

Ammonite Zonation - Boreal

Echinoceras raricostatum
Oxynoticeras oxynotum
Asteroceras obtusum
193.8193.8193.7193.7193.6193.6193.5193.4193.4193.3193.3193.3193.2193.2193.1193.1193.0192.9192.9192.8192.8

Macrostrat

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