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The timeline of the evolutionary history of life represents the current scientific theory outlining the major events during the development of life on planet Earth. Dates in this article are consensus estimates based on scientific evidence , mainly fossils .
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The history of life on Earth traces the processes by which living and extinct organisms evolved, from the earliest emergence of life to the present day.
4 days ago · Fossilized remnants of a microbial mat provide evidence that life existed on land as early as 2.6 to 2.7 billion years ago. The findings suggest that an oxygen atmosphere and a protective ozone layer were in place around Earth by that time.
LUCA is not thought to be the first life on Earth, but rather the only type of organism of its time to still have living descendants. In 2016, M. C. Weiss and colleagues proposed a minimal set of genes that each occurred in at least two groups of Bacteria and two groups of Archaea.
Dec 15, 2012 · Most scientists give the credit to a group of mossy swamp-dwellers that originated underwater, but new evidence points to a mysterious life-form that lived--and died--millions of years...
- Emily Elert
Jul 14, 2009 · The story of evolution spans over 3 billion years and shows how microscopic single-celled organisms transformed Earth and gave rise to complex organisms like animals. There are all sorts of...
Mar 3, 2016 · Biology. By Will Dunham. A study published on Wednesday described microfossils of a subterranean fungus called Tortotubus that was an early landlubber at a time when life was largely confined to...
