Type
Zone
Age range
15.9–13.8 Ma
Miocene
Serravallian
Langhian
Burdigalian
Denticulopsis dimorpha - Crucidenticula nicobarica
Denticulopsis hyalina - Denticulopsis lauta
Crucidenticula sawamurae - Thalassiosira fraga
15.915.815.715.615.515.415.315.215.115.014.914.814.714.614.514.414.314.214.114.013.913.8