Cenozoic Microfossils

phenergan lloyds 2700000000 BC-02-23 19:23:03 Uncontested microfossils and chemical traces of life were present at least by 2.7 billion years ago Source:http://paleobiology.si.edu/geotime/main/htmlversion/archean3.html For Testing Purposes only: Chronometric Index: 7000 Make sure to rewrite each slide, include citation and remove this testing paragraph