The geologic timescale is divided into several different eras or epochs of time. What are the major events that separate these eras?

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    major solar events
    major extinction events
    major lunar events
    dominant animal forms
asked May 19, 2013 in Biology by anonymous
    

1 Answer

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major extinction events
answered May 20, 2013 by Bioshare ~Top Expert~ (34,070 points)

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