Gabon, the cradle of macroscopic life?
The discovery of macrofossils dating back 2.1 billion years attests to the appearance of complex organisms very early after the oxygenation of the oceans and the atmosphere. The complexification of life thus took place a lot quicker than had been believed.
(1) El Albani A. et al. 2010. Large colonial organisms with coordinated growth in oxygenated environments 2.1 Gyr ago. Nature vol. 466 : 100-104 (1 July 2010).