Middle Miocene
From Wikipedia, the free encyclopedia
The Middle Miocene is a sub-epoch of the Miocene Epoch made up of two stages: the Langhian and Serravallian stages.
The sub-epoch lasted from 15.97 ± 0.05 mya to 11.608 ± 0.005 Mya (million years ago). During this period, a sharp drop in global temperatures took place. This event is known as the Middle Miocene Climate Transition.