Type
Zone
Age range
15.68–11.95 Ma
Miocene
Serravallian
Langhian
Diartus petterssoni
Dorcadospyris alata
Calocycletta costata
15.815.615.415.215.014.814.614.414.214.013.813.613.413.213.012.812.612.412.212.011.8