Creature without a face?
There is no point of being selfish and assuming that just like human other
creatures also had face, which was shaped and structured over the course of
time. Well, for those who tend to disagree and feel that every creature was
evolved with the head; latest scientific discovery defiantly appears to be at
loggerheads with your assumption.
Earliest creature was
found to be jawless with backbone. Romundina, an armored fish that swam the
water for almost 415 million years, fossils of whose are unraveling the
mysteries at Canadian Arctic. This is something amazing.
Romundina Fish, is being
meticulously studied by French and Swedish scientist and everything is
articulated. According to expert, fossil of Romundina fish can help to solve
the mystery of human face evolution. Romundina Fish is said to be a combination
of primitive jawless fish and modern jawed fish. Scientist derived this
conclusion by scanning skull of Romundina fish with X-Rays at ESRF- European Synchrotron.
Scientist discovered that Romundina had
shorter forebrain and an extended upper lip. It thrived during Silurian and
Devonian periods in Earth's history, but became extinct 360 million years ago.
This Romundina fish was under placoderm type of fish.
The
study further revealed that Romundina fish
was 8 inch long with defensive spine and had flat crushing plate’s teeth.
Its front being armor encased, backend was supple and had fins along with a
sharp tail.
How did
jawless creature turned into jawed creatures?
There are there steps of
evolution of Romundina Fish. In the first step represented by Romundina, jaws
evolved while a singular nostril reached under the brain in
jawless vertebrates was replaced by a solid floor under the brain and separate
left and right nostrils opening on the face.
Nose located between the
eyes and the skull stretched in front of it like a bony ‘upper lip’, forebrain remained
small.
In second step, Nose
extended while upper lip shrank making nose at front of face. However,
forebrain still remained short. In the third and final step, jaw and forebrain
increased as evident in contemporary awed
vertebrates
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