Type
Zone
Age range
7.67–3.665 Ma
Pliocene
Piacenzian
Zanclean
Miocene
Messinian
Tortonian
Neodenticula koizumii - Neodenticula kamtschatica
Neodenticula kamtschatica
Thalassionema schraderi - Denticulopsis katayamae
7.87.67.47.27.06.86.66.46.26.05.85.65.45.25.04.84.64.44.24.03.83.6