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What Was The First Step In Developing The Geologic Time Scale? [Solved]
The first step in developing the geologic time scale was studying rock layers and index fossils worldwide. Q. Scientists divided the time between Precambrian time and the present into four units of time, or eras. Periods are subdivided into units of geologic time called eras.
A Brief History of Geologic Time
By looking at the layers beneath our feet,
The Geologic Timescale
This educational (non-profit) video was produced by Professor Drew Muscente for the Historical
History of the Geologic Time Scale
This video follows the
