This page shows an artist's conception of the different landscapes during each period of geologic history.
Eocene (55.8-33.9 MYA)
Oligocene (33.9-23 MYA)
Miocene (23-5.3 MYA)
Pliocene (5.3-2.6 MYA)
Pleistocene (2.6 MYA-10,000 YA)
Original art by: Xavier Moss