- Reassessing the first appearance of eukaryotes and cyanobacteriaBirger Rasmussen
Department of Applied Geology, Curtin University of Technology, Kent Street, Bentley, Western Australia 6102, Australia
Nature 455:1101-4. 2008..7 Gyr ago and exclude previous biomarker evidence for a long delay (approximately 300 million years) between the appearance of oxygen-producing cyanobacteria and the rise in atmospheric oxygen 2.45-2.32 Gyr ago...
- Discoidal impressions and trace-like fossils more than 1200 million years oldBirger Rasmussen
Centre for Global Metallogeny, Department of Geology and Geophysics, University of Western Australia, Crawley, Western Australia 6009, Australia
Science 296:1112-5. 2002....