Last modified on 27 January 2012, at 21:15

Category:Paleoproterozoic

日本語: 古原生代

Proterozoic occurring between 2500 Ma and 1600 Ma (million years ago). This is when the continents first stabilized. This is also when Cyanobacteria evolved, a type of bacteria which uses the biochemical process of photosynthesis to produce energy and oxygen.

Corresponds to "Precambrian X" rocks of older North American geology.

Media in category "Paleoproterozoic"