The time from 3,800 million years to 2,500 million years ago; earth's crust formed; unicellular organisms are earliest forms of life.
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No known archaean seemed to be equipped to be a host cell.
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But it was an archaean that had some surprising similarities to eukaryotes.
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However, by 2010 it was pretty clear that the host cell was an archaean.
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This implies that an archaean somehow picked up the lipid modification enzymes from bacteria.
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When Loki was found in 2015, it was immediately apparent that it was an archaean.
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The period following on after Archean time is called, by geologists, Paleozoic time.
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Others divide the Precambrian into two eras, the very ancient Archean and the more recent Proterozoic.
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Rocks of Archean age cover wide areas in the interior, in West and East Africa and across the Sahara.
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A theory held by many refers the ultimate source of the iron to the igneous rocks of the Archean.
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Together, the data paint a picture of Archean evolution that is one of early development of morphological and chemical complexity.
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If it were in the Archean, this whole blog might be a few words arranged nonsensically and a fragment of an out-of-focus photo.
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Our knowledge is far too meager to warrant an attempt to draw the varying outlines of sea and land during the Archean and Algonkian eras.
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Archean rocks form the cores of the ancient crystalline masses within the littoral zone from Algiers to Bona.
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The archean age, during which the brooding seems to have gone on, was probably as long as all the ages since.
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Racing to the line with him and finishing just behind him was ARCHEAN (5) who was also held up for a run.