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Nature 416, 73-76 (7 March 2002) | doi:10.1038/416073a;
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Oleo Chemistry
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Laser|[ndash]|Raman imagery of Earth's earliest fossils
Unlike the familiar Phanerozoic history of life, evolution during the earlier and much longer Precambrian segment of geological time centred on prokaryotic microbes. Because such microorganisms are minute, are preserved incompletely in geological materials, and have simple morphologies that can be mimicked by nonbiological mineral microstructures, discriminating between true microbial fossils and microscopic pseudofossil |[lsquo]|lookalikes|[rsquo]| can be difficult.
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