Type
Zone
Age range
23.62–20.53 Ma

International Timescale

Miocene
Burdigalian
Aquitanian
Oligocene
Chattian

Low Latitude Radiolarian Zonation

Stichocorys delmontensis
Cyrtocapsella tetrapera
Lychnocanoma elongata
23.623.423.223.022.822.622.422.222.021.821.621.421.221.020.820.620.4

Macrostrat

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