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Archaean

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Archaean

Widely used term for the earliest era of geological time; the first part of the Precambrian Eon, spanning the interval from the formation of Earth to about 2,500 million years ago.



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When Mehta and Baross sequenced a bit of DNA, they found that FS406-22 is an anaerobic archaean, a one-celled organism that looks like a bacterium but has chemical similarities to multicelled organisms.
2003, Archaean cratonization and deformation in the Northern Superior Province, Canada: an evaluation of plate tectonic versus vertical tectonic models: Precambrian Research, v.
Strain 121, an archaean (formerly called bacteria) discovered in a "black smoker" thermal vent deep in the Pacific Ocean, holds the record for being the "hottest organism known to man.
 
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