THE EARLIEST EVIDENCE FOR LIFE

THE EARLIEST EVIDENCE FOR LIFE
The Earliest Evidence for Life
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THE EARLIEST EVIDENCE FOR LIFE
The presence of life on the planet of earth is entirely based on both water as well as
carbon. The reason behind this that stabilized frameworks are provided by carbon with respect to
several kinds of complicated chemicals by carbon itself and in turn could easily be extracted
directly from the environment and most importantly from carbon dioxide (Nutman et al. 2016).
Several researchers have focused on the earliest and the first evidence on the presence as well as
emergence of life on the planet of earth.
The earliest evidence for life on earth occurred in the form of fossils of several earliest
living organisms on Earth which are in turn represented by several small filaments, tubes and
knobs in numerous Canadian rocks which are dated to be approximately 4.28 billion years old
(Scerri et al. 2014). This particular time period is very close after the formation of the planet
along with hundred million years prior to what is currently being accepted in the form of
evidence regarding the existence of most of the ancient life which is identified on Earth.
These particular structures of the fossils were bundled within the quartz layer inside the
NSB or Nuvvuagittuq Supracrustal Belt. This NSB is specifically a very small part of the floor of
the ocean which in turn is ancient. These constitutes of most of the oldest sedimentary and
volcanic rocks which known to science (Djokic et al. 2017). So, basically the earliest form of life
which is known be an earliest evidence on this planet are supposed to be numerous
microorganism which are found within the precipitates of the hydrothermal vents (Dodd et al.
2017). Several chemical signals were contained within these fossils which have a resemblance
like that of a filament and possess capabilities of heralding the life of the living beings.
This form the oldest evidences of the existence of life on this planet and at the same time
indicates towards a mostly instantaneous life emergence just after the oceans got formed. On the
other hand, it has also been speculated by some of the researchers that the emergence of life

THE EARLIEST EVIDENCE FOR LIFE
might have commenced approximately 4.5 billion years ago. Additionally, the discovery of a
fungus namely Ourasphaira giralde which was fossilized were speculated by several scientists
(Loeb, Batista and Sloan 2016). It is present with the Canadian Arctic and are also speculated to
might have grown on the land of the Canadian Arctic approximately a billions of years ago even
before the plants started living on the land itself (Brasier, McIlroy and McLoughlin 2017). It
was also reported by several number of scientists that emergence of life on this planet Earth
might have been bacteria approximately 3.22 billions of years ago.
It also comprises of the evidence of the existence of the life of the microbes on the land
which might have been identified closely in geyserite which was itself 3.48 billions of years old
and might have been identified within the Pilbara Craton which is situated in the western region
of Australia. Not only these kinds of speculations have taken place but also another speculation
by several scientists indicates that the liquid water was contained within the meteorites which
were found on Earth and which in turn are approximately 4.5 billions of years old (Scharf et al.
2015). Not only liquid water is contained inside these meteorites, but it also contains certain
complicated organic substances which are prebiotic in nature and in turn which might be the
ingredients linked with life.
The earliest time or the evidence of the appearances of the forms of life on this planet
dates back to approximately 3.77 billion years ago or even 4.5 billion years ago which not that
long after the oceans got formed approximately 4.41 billion years ago as well as it is not that too
long after the formation of this particular planet of Earth which is just 4.54 billion years ago.
Microfossils of the which are premineralized within the Australian Apex chert rocks forms
directly the earliest as well as the first evidence of existence of life on this planet. In addition to
this, these particular Australian Apex chart rocks are 3.465 billion years old (Glikson 2014).