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zz) Proterozoic Era (2.5 Billion to 543 Million Yrs Ago) - Stable Continents First Appeared+Began to Accrete + Life Evolved.JPG
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%20Proterozoic%20Era%20(2.5%20Billion%20to%20543%20Million%20Yrs%20Ago)%20-%20Stable%20Continents%20First%20Appeared%2BBegan%20to%20Accrete%20%2B%20Life%20Evolved.JPG "zz) Proterozoic Era (2.5 Billion to 543 Million Yrs Ago) - Stable Continents First Appeared+Began to Accrete + Life Evolved.JPG")