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____ [38]
3 years ago
6

. Explain how paleontologists use trilobite fossils as index fossils for various geologic time periods.

History
1 answer:
Alisiya [41]3 years ago
3 0
Trilobites were rapidly evolving and widespread marine organisms that spanned a number of geologic time periods. Certain types of trilobites only appeared in specific segments of geologic time; therefore, when one of these trilobites is found, you can be certain that the rock layer it is found in is of a certain geologic age.
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