Why are fossils rare in precambrian rocks?
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Why are Precambrian fossils rare?
The Precambrian is the earliest of the geologic ages, which are marked by different layers of sedimentary rock. Laid down over millions of years, these rock layers contain a permanent record of the Earth's past, including the fossilized remains of plants and animals buried when the sediments were formed.
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This is because many Precambrian rocks have been heavily metamorphosed,
obscuring their origins, while others have been destroyed by erosion,
or remain deeply buried beneath Phanerozoic strata.
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