Type
Zone
Age range
2.65–2 Ma
Pleistocene
Gelasian
Pliocene
Piacenzian
Actinocyclus oculatus
Neodenticula koizumii
Neodenticula koizumii - Neodenticula kamtschatica
Actinocyclus oculatus
Neodenticula koizumii
Neodenticula koizumii - Neodenticula kamtschatica
2.62.62.52.52.52.42.42.32.32.22.12.12.02.0