Neogene North Pacific Diatom Biochronology Subzones
32International timescale
Holocene
Meghalayan
Northgrippian
Greenlandian
Pleistocene
Late Pleistocene
Chibanian
Calabrian
Gelasian
Pliocene
Piacenzian
Zanclean
Miocene
Messinian
Tortonian
Serravallian
Langhian
Burdigalian
Aquitanian
Oligocene
Chattian
Neogene North Pacific Diatom Biochronology Subzones
Neodenticula seminae
Proboscia curvirostris
Actinocyclus oculatus
Neodenticula koizumii
Neodenticula koizumii - Neodenticula kamtschatica
Thalassiosira oestrupii
N. kamtschatica - Nitz. rolandii
Rouxia californica
Thalassionema schraderi
Denticulopsis katayamae
Denticulopsis dimorpha
Thalassiosira yabei
Denticulopsis praedimorpha
Denticulopsis simonsenii
D. hyalina - D. praehyalina
Denticulopsis lauta
Denticulopsis praelauta
Crucidenticula kanayae
Crucidenticula sawamurae
Thalassiosira fraga
Thalassiosira praefraga
Zone
Subzone
Thalassiosira oestrupiiN. kamtschatica - Nitz. rolandiiRouxia californicaThalassionema schraderiDenticulopsis katayamaeDenticulopsis dimorphaThalassiosira yabeiDenticulopsis praedimorphaCrucidenticula nicobaricaDenticulopsis simonseniiD. hyalina - D. praehyalinaDenticulopsis lautaDenticulopsis praelautaCrucidenticula kanayaeCrucidenticula sawamuraeThalassiosira fraga
