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Published online 11 August 2000 | Nature | doi:10.1038/news000817-1

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Fossils' fuel

Fossils of ancient bacteria can be identified from how they digested their last meals, Philip Ball discovers. .

For a fossil hunter, there's not much glamour in the Precambrian era. Beginning with the birth of our planet and ending about 570 million years ago, this huge period of time bequeaths no dinosaur bones, nor even the corrugated imprint of an early fish.

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