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Unformatted text preview: 2.6 my Oldest tools 2.5 my tool making caught on 1.8 my Homo Erectus (Java and Peking man) 800,000 years Homo Sapiens (wise men) 125,000 years Anatomically Modern A look at Geologic Time JAN 1 Earth Forms 4.6 by ago FEB 19 Oldest Known Rock 3.96 by MAR 4 Earth has an ocean 3.8 by MAR 28 Oldest known fossil 3.5 by NOV 14 Begin Paleognozic...
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- Spring '07