BRISTOL - an old fossil 400 million years old by scientists discovered were able to uncover the evolution of the vertebrates.
Cited by Softpedia, Thursday (7/5/2011), a working paper entitled 'fossils from China fish' jaw without exposing the anatomy of the vertebrates of the first jawed vertebrates, that ever existed. This paper in science magazine nature published.
Experts say that to configure, the key to the success of the evolution of the vertebrates on new that their brains complete and functional. According to the latest research, found that these aspects developed further an important role for millions of years in the dominance of vertebrates to play.
Vertebrate evolution process is not easy and spend a long time, until she could reach their climax. But finally they were happy, because its survival can adapt far more easily.
However, the increase of vertebrate evolution of one of the mysterious aspects of evolutionary biology is. New research attempts to solve some problems through the study of the chain is missing between animal life or jawed vertebrates without JAWS Vetebrata.
Research on the development of the Vetebrata takes place on a fossil fish without a jaw, which was 400 million years ago. Researchers are lucky to find fossils in undamaged condition, nor can it the structure of the fish brain analyzing.
Scientists of the University of Bristol (UB), the United Kingdom, the Institute of vertebrate palaeontology and Institute, Switzerland, is a group of teams from this research particle research (both) in China, Museum National d'Histoire Naturelle, France and Paul Scherrer.
Fossil fish without these old pine tree known as Galeaspid. Members of the team of researchers interested in analyzing the fish head. To perform the analysis, you use the installation of a light source, the production of Switzerland x-ray high energy.
After doing the above process, the team finally able to determine the shape of the animal brains and sensory organs. Then, the entire data-based model was integrated into the computer. Author of the key features of this research is Gai Zhi-Kun of ICPP/UB.
"We can see the blood vessels, nerves and arteries in the brain of this amazing fossils." You have a brain like a shark, but has no jaw. We were able to show that the brains of vertebrates prior to the development of pine are combined there again ", explains the expert."
"The growth of the jaw in animals can through cell Vetebrata stem cells from the brain behind the move to the next part of the brain, then down, promote develop jaw growth through the nostrils," adds Professor UB and co-authors, Philip Donoghue.
"But this cannot be in live vertebrates without jaws, jawed vertebrates, happen, because they have different nose organ Tunggalyang Vetebrata with animals" close investigator, based in UB (School of Earth Sciences).
The Royal Society, natural environment Research Council, the Chinese Academy of Sciences, the Chinese Foundation of natural sciences, 7th framework programme of the European Union and Paul Scherrer Institute for this research funded. (Type)
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