What happened during this time?
The super-continent Columbia formed during this period.
Continents of Ur, Nena, and Atlantica drifted together, they expanded through accretion and formed a huge super continent
Diversification of unicellular organisms
Appearance of possible early eukaryote (Grypania spiralis) around 2.1 Ga (Grey and Williams 1990; Han and Runnegar 1992; Kumar 1995)
The youngest occurrence of Grypania is in the Ediacaran Period (900 Ma)
The organisms has a coiled, filamentous appearance; possible green, Chlorophyceae algae
Above: An early eukaryotic algae, Grypania