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3.7-billion-year-old fossils found in Greenland act as oldest physical evidence of life on earth
Fossils dating back 3.7 billion years and termed as the oldest physical evidence on earth have been discovered in Greenland. If the findings turn out to be true then they would act as a treasure trove providing vital information on ancient living organisms as well clues about similar sings of possible ancient life forms on planet Mars.
The research paper published in the journal Nature has unveiled that the fossils are considered to be stromatolites, structures produced by photosynthetic bacteria. Study’s co-author Allen Nutman of the University of Wollongong in Australia said that it is for the first time that they have see an environment in which early life had thrived.
“If we got these communities of bugs 3.7 billion years ago, building structures you can see with your naked eye, there is a possibility the same thing could have happened on Mars”, said Nutman.
The discovery was made after retreat of snow and ice unveiled long-hidden rocks. Nutman said that they were exploring Isua rocks and noticed an area that for past so many years remained covered by a snow patch, but was now free of snow.
They moved towards the area and came to know that it was the fossil. As per Nutman, previous studies have indicated about life on earth dating back 3.8 billion years. But this study is the first one that has proved the same with physical evidence.
Researchers said that there are chances that some scientists could say that the intense metamorphic conditions could have damaged the rock, but they are also confident about their findings. Experts said that rocks of this age are extremely rare to find therefore it is considered to be quite an exciting finding.