I
like very much this moment of our history, because it is when we first appear
as species. Besides this was a time when we were a weak animal in a kind of
world where nothing was easy. Just imagine that we were for four million years endangered
as a species.
To
start we will talk about one kind of hominid called Australopithecus (means
monkey from the South). He is the first primate hominid that moves in bipedal way.
He lived in this world 6 million years ago. His home was a place now called
Africa. They were not very tall, only 1.20 or 1.30 I think, and weighed 25kg or
45kg. The males were a 50% bigger than females, while this
difference in humans is a 15%
But
although this primate plays an important part in human evolution and it is very
similar to homo species, it is not the same species because they do not have the
same molecular sequence, I mean that after the Australopithecus it existed
another primate closer to the species Homo (our species) but those fossils have
never been found, therefore all scientist talk about the transitional fossil.
The
first referent of our species appears 2,6 millions years before our time. It is
the Homo habilis. He is bigger, stronger and above all more intelligent than the
Australopithecus. He is the first primate that uses tools which he makes of
stone, that is why this period is called Paleolithic (means, old stone). The
females had a smaller pelvis and had to give birth before, that is why the baby
was more defenseless and that helped to create a stronger relationship and that
was a very good thing for the culture of the tribe.
Suddenly,
one million years after, appears the Homo erectus. He is more intelligent than
Homo habilis and knows how to make fire. The two species compete for the same
resources and the Homo habilis becomes extinct.
1
million years later appears the Homo sapiens neanderthal (mean, wise man from
valley Neand) He is almost two times more intelligent than Homo erectus, even
more than us, he is the stronger homo, his body is adapted to the natural
environment. When he breaks a bone, he recovers without assistance. He was the
perfect machine and his home was whole Europe. For 100.000
years they were the kings of the continent.
But then
an intruder from of Africa called Homo sapiens sapiens arrived (mean,
double wise man) less adapted to the environment, weaker. All seemed in this
hominid worse than the Neardenthal, but his throat was capable to do complex sounds,
therefore they were able to create a language and with that to get a good
organization. Besides also his brain was different, they could imagine different
things and try to change the surroundings.
The
adaptation doesn’t matter, that was the beginning of the end of the world.
By Jorge Maruejouls
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