Reassessing the first appearance of eukaryotes and cyanobacteria

@article{Rasmussen2008ReassessingTF,
  title={Reassessing the first appearance of eukaryotes and cyanobacteria},
  author={Birger Rasmussen and Ian R. Fletcher and Jochen J. Brocks and Matthew R Kilburn},
  journal={Nature},
  year={2008},
  volume={455},
  pages={1101-1104}
}
The evolution of oxygenic photosynthesis had a profound impact on the Earth’s surface chemistry, leading to a sharp rise in atmospheric oxygen between 2.45 and 2.32 billion years (Gyr) ago and the onset of extreme ice ages. The oldest widely accepted evidence for oxygenic photosynthesis has come from hydrocarbons extracted from ∼2.7-Gyr-old shales in the Pilbara Craton, Australia, which contain traces of biomarkers (molecular fossils) indicative of eukaryotes and suggestive of oxygen-producing… 

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The molybdenum isotope composition of modern and ancient stromatolites

  • M. Thoby
  • Environmental Science, Geography
  • 2015
The primitive Earth was characterized by an oxygen-poor ocean–atmosphere system, and experienced a significant increase in oxygen concentrations during the Great Oxidation Event (GOE) ca 2.45 Ga.
...

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