Type
Subzone
Age range
1.88–0.61 Ma

International Timescale

Pleistocene
Chibanian
Calabrian
Gelasian

Planktic Foraminiferal Secondary Biozones

G. truncatulinoides PRSZ
G. tosaensis HOSZ
G. fistulosus HOZ - Atlantic
1.91.81.71.61.51.41.31.21.11.00.90.80.70.6

Macrostrat

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