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May 28, 2010 (publication date) through Nov 3, 2025
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World Journal of Biological Chemistry
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1949-8454
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Baishideng Publishing Group Inc, 7041 Koll Center Parkway, Suite 160, Pleasanton, CA 94566, USA

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Copyright ©2010 Baishideng Publishing Group Co.
World J Biol Chem. May 28, 2010; 1(5): 160-180
Published online May 28, 2010. doi: 10.4331/wjbc.v1.i5.160
Table 1 Evolutionary chronology of the 5 organismic kingdoms
Million of years ago
4200Ribozymatic pre-cellular agents
3800Prokaryotic microfossils (bacteria, archaea)
1200Protoctist fossils (unicellular eukaryotes)
750Animal fossils
450Fungus fossils
350Plant fossils
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