Type
Zone
Age range
2.65–2 Ma

International Timescale

Pleistocene
Gelasian
Pliocene
Piacenzian

Neogene North Pacific Diatom Biochronology

Actinocyclus oculatus
Neodenticula koizumii
Neodenticula koizumii - Neodenticula kamtschatica

Neogene North Pacific Diatom Biochronology Subzones

Actinocyclus oculatus
Neodenticula koizumii
Neodenticula koizumii - Neodenticula kamtschatica
2.62.62.52.52.52.42.42.32.32.22.12.12.02.0

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