Paleobiological perspectives on early eukaryotic evolution.

  title={Paleobiological perspectives on early eukaryotic evolution.},
  author={Andrew H Knoll},
  journal={Cold Spring Harbor perspectives in biology},
  volume={6 1}
Eukaryotic organisms radiated in Proterozoic oceans with oxygenated surface waters, but, commonly, anoxia at depth. Exceptionally preserved fossils of red algae favor crown group emergence more than 1200 million years ago, but older (up to 1600-1800 million years) microfossils could record stem group eukaryotes. Major eukaryotic diversification ~800 million years ago is documented by the increase in the taxonomic richness of complex, organic-walled microfossils, including simple coenocytic and… CONTINUE READING
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