Сантон a1.1.2.1.1.3 Base of Campanian Phanerozoic Eon Mesozoic Era Coniacian Age santoniano Santonium Santonium Cretaceous Period Santoniense 桑托期 Santonian Geologic Time Scale (2018) santón サントニアン期 younger bound -83.6 +|-0.2 Ma santoni Santon Santonien Santonien santon Santon Santon santonij Santoniën Campanian Age Late Cretaceous Epoch Santoni older bound -86.3 +|-0.5 Ma Santonis Santonian Age Base of Santonian Santoniano