Question #13bbe

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Feb 16, 2018

Eras, Periods and Epochs


The geological time scale tracks the time of the Earth since its origin to the present.

It is divided in three main eras (Palozoic, Mesozoic and Cenozoic) each one further divided in different periods that are then divided in epochs.

The different divisions are linked to major changes in the life forms of the planet identified by their fossils found within different strata.

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It is a relative time division meaning that documents intervals of time relative to one another.