World’s oldest known fossils found in Greenland push evidence for life back by 220 million years

From ABC News in Science, 1 September 2016:

The oldest fossils known to date have been discovered in 3.7 billion-year-old rocks in Greenland by an Australian-led team of researchers.

The discovery of the fossilised bacterial communities, known as stromatolites, could be the first clear biological evidence of the earliest known life on Earth, according to a paper published today in Nature.

Before this find, the earliest accepted evidence for life were 3.48 billion-year-old fossil stromatolites from the Pilbara region in Western Australia. Read more.

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