Stromatolite fossils formed around 3,700 million years ago in what is now Greenland predate the previous oldest fossil evidence for life on Earth by more than 200 million years.
Links:
[1] http://admin.indiaenvironmentportal.org.in/feature-article/rapid-emergence-life-shown-discovery-3700-million-year-old-microbial-structures
[2] http://admin.indiaenvironmentportal.org.in/category/author/allen-p-nutman
[3] http://admin.indiaenvironmentportal.org.in/category/author/vickie-c-bennett
[4] http://admin.indiaenvironmentportal.org.in/category/author/clark-r-l-friend-et-al
[5] http://admin.indiaenvironmentportal.org.in/category/journal/nature
[6] http://admin.indiaenvironmentportal.org.in/category/thesaurus/life-science
[7] http://admin.indiaenvironmentportal.org.in/category/thesaurus/fossils
[8] http://admin.indiaenvironmentportal.org.in/category/thesaurus/greenland
[9] http://admin.indiaenvironmentportal.org.in/category/thesaurus/micro-organisms