The Late Miocene (also known as Upper Miocene) is a sub-epoch of the Miocene Epoch made up of two stages. The Tortonian and Messinian stages comprise the Late Miocene sub-epoch.
The sub-epoch lasted from 11.608 ± 0.005 Ma (million years ago) to 5.332 ± 0.005 Ma. The Late Miocene Period was when the Australian species Thylacinus potens lived.
References
Late Miocene Wikipedia(Text) CC BY-SA