The people settled in South America in a single migration wave, soon after their ancestors first came from Siberia to the Western hemisphere.
Settlement in South America was discussed in a paper presented at the annual conference of the society of American archaeology in San Francisco. The work is based on DNA extracted from the remains of five ancient people who lived in the Peruvian Andes.
The most ancient Parking in South America – Monte Verde – has an age of about 14,6 thousand years. This date suggests that people quickly crossed two continents, through one or two thousand years after Beringovuy passed under the bridge. It is possible that the ancestors of the Americans were moving along the Pacific coast.
But some scientists believe that was the second wave of migration. They note that the elongated, narrow skull, which were the inhabitants of South America about five thousand years ago, too different from the round heads later the natives and modern native Americans. According to some researchers, the differences suggest that the waves of migration were more. Continue reading
Last year at the Postal square found unique finds – the ancient street of Kievan Rus’.
Now excavations are ongoing, archaeologists have found many interesting things, writes “Today”.
As of early February, the facility employs 15 people. They scrutinize soil layers XVI-XVIII century and promise to deal with this period before the summer.
In excavations the archaeologists have found 4 children’s graves and about 10 adults.
According to the Director of the centre of archaeology Kyiv Mykhailo Sahaidak, their graves were not very valuable things, but were a small body-worn bronze and silver crosses, that is, these people were Christians.
“The remains of people initially treated. Summer is waiting for the arrival of a group of scientists anthropologists from Sweden, who will be able to install even sickness of these people! And will hold these works for their own money – for the sake of science. To create the current exhibition at Post need deep research,” said Sagaidak. Continue reading
Our planet often brings surprises to scientists. Paleontologists generally are more like hunters, and despite the fact that the quest for long-extinct animals are strictly on science, some discoveries like treasures. It is possible to tell about fossils found recently in China. Age of it — 520 million years, and the animal itself (Chengjiangocaris kunmingensis) is a relative of modern crustaceans.
Amazing is the fact that the breed was printed not only the chitin armor with all the details, but the nervous system of the animal. It’s almost unbelievable fortune, and certainly the best preserved instance of the structure of the nervous system of extinct millions of years ago animal. Usually saved only hard body parts like teeth, bones, and chitinous shells. Get mineralized tissue is extremely rare, and “colored” fossil of this type is generally unique. At the center of all fossils is a clear line of purple color, it is so-called the nerve cord (“spinal cord”). On the line visible thickening is ganglia, located between each of the pairs of legs of the animal. According to Javier Ortega-Hernandez, the head of the research team who found the fossil, these ganglia were something like a mini-brain for each of the pairs of feet of ancient crustaceans. After a detailed examination of the finds were discovered and dozens baleally auxiliary nerve endings, which were fan-shaped along the entire length of the strand. Continue reading