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14 September, 00:57

What are index fossils and how are they used to determine the absolute age of sedi

mentary rocks

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  1. 14 September, 01:15
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    Index fossils are from species that only existed for a short period of time. they are found in rocky layers, Trilobites and Graptolites are index fossils. A guide and zone fossil are used often to determine the age of the rock layer in which it is found.
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