Timeline of Civilizations on Earth 1413 AD – 3573 AD Post-Atlantean Civilization Contains seven periods. 1413 AD – 3573 AD 50.000 years BC – 10.000 years BC Atlantis 50.000 years BC – 10.000 years BC past ??? Lemuria past ??? past ??? Polarian Era past ??? past ??? Hyperborean Era past ???
