Science, asked by Mika21, 8 hours ago

Describe how index fossils (also known as guide fossils) are used to define and identify subdivision of geologic time scale.

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Answered by bhunikasharma
1

Explanation:

Index fossils are used in the formal architecture of geologic time for defining the ages, epochs, periods, and eras of the geologic time scale. ... The evidence for these events is found in the fossil record wherever there is a disappearance of major groups of species within a geologically short amount of time.

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