Tortonian

Tortona (; , ; ) is a comune of Piemonte, in the Province of Alessandria, Italy. Tortona is sited on the right bank of the Scrivia between the plain of Marengo and the foothills of the Ligurian Apennines. Its frazione of Vho is one of I Borghi più belli d'Italia ("The most beautiful villages of Italy").

The Tortonian is in the geologic time scale an age or stage of the late Miocene that spans the time between 11.608 ± 0.005 Ma and 7.246 ± 0.005 Ma (million years ago). It follows the Serravallian and is followed by the Messinian.

ice age of the last 34 million years, in particular in Antarctica

Third and final subseries and subepoch of the Miocene Epoch