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Monthly Archives: August 2012

Denisovan genome sequenced

31 Friday Aug 2012

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The genome of a recently discovered branch of extinct humans known as the Denisovans that once interbred with us has been sequenced, scientists announced today (August 30).

Genetic analysis of the fossil revealed it apparently belonged to a little girl with dark skin, brown hair and brown eyes, researchers said. All in all, the scientists discovered about 100,000 recent changes in our genome that occurred after the split from the Denisovans. A number of these changes influence genes linked with brain function and nervous system development, leading to speculation that we may think differently from the Denisovans. Other changes are linked with the skin, eyes and teeth.

“This research will help [in] determining how it was that modern human populations came to expand dramatically in size as well as cultural complexity, while archaic humans eventually dwindled in numbers and became physically extinct,” said researcher Svante Pääbo at the Max Planck Institute for Evolutionary Anthropology in Leipzig, Germany.

Future research may turn up other groups of extinct humans in Asia “in addition to Neanderthals and Denisovans,” Pääbo told LiveScience.

Although our species comprises the only humans left alive, our planet was once home to a variety of other human species. The Neanderthals were apparently our closest relatives, and the last of the other human lineages to vanish.

However, scientists recently revealed another group of extinct humans once lived at the same time as ours. DNA from fossils unearthed in Denisova Cave in southern Siberia in 2008 revealed a lineage unlike us and closely related to Neanderthals. The precise age of the Denisovan material remains uncertain — anywhere from 30,000 to 80,000 years of age.

Full story here: http://www.huffingtonpost.com/2012/08/31/denisovan-genome-sequence_n_1844932.html

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Neolithic animal figures found near Jerusalem

30 Thursday Aug 2012

Posted by richardmilton in Stone age tools

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animal domestication, antiquities authority, millennium bce

One of the Neolithic figurines found near Jerusalem

Archaeologists from Israel’s Antiquity Authority have found animal figurines around 9,500 years old during the expansion of Highway 1 from Tel Aviv.

Searchers discovered the figurines of a ram and a wild  bovine in Tel Moza, a rich archeological site in the Judean Hills outside of  Jerusalem. The ram, made from limestone, has intricately carved horns and is  about 15 centimeters long.

“The sculpting is extraordinary and precisely  depicts details of the animal’s image; the head and the horns protrude in front  of the body and their proportions are extremely accurate,” said  Dr. Hamoudi Khalaily, one of the co-directors of the dig from the  Antiquities Authority.

The second figurine is more abstract and depicts a  large animal with prominent horns that could be a wild bovine or  buffalo.

Khalaidy said the object most likely dates from the period when  early humans began the transition from nomadic hunting and gathering to  sedentary life based on farming and grazing with permanent settlements. “The  Pre-Pottery Neolithic B period [the eighth millennium BCE] is considered one of  the most fascinating chapters in the history of mankind; many changes took place  in it that shaped human society for thousands of years to come,” he said in a  statement released by the Antiquities Authority.

Anna Eirikh, the other  codirector of the dig, believes that the figurines are linked to the process of  animal domestication, as the inhabitants began to build complex societies and  agricultural villages.

But Khalaily believes the figurines were used as  talismans.  “Presumably, the figurines served as good luck statues for  ensuring the success of the hunt and might have been the focus of a traditional  ceremony the hunters performed before going out into the field to pursue their  prey,” he said.

Full story here: http://www.jpost.com/NationalNews/Article.aspx?id=283036

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Building a late Stone Age house

20 Monday Aug 2012

Posted by richardmilton in Stone age tools

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Student from Leiden University will reconstruct a Stone Age house.

Arachaeologists and students from Leiden University are going to build a reconstruction of a late Stone Age house. From 20-31 August, Leiden Archaeology students will be working on a reconstruction of a Late Stone Age house (from the second half of the Vlaardingen culture, ca. 2,900-2,500 BC). The project will be supervised by prof. dr. Annelou van Gijn and architects Diederik Pomstra and Hans de Haas, in collaboration with Staatsbosbeheer (State Forest Management). The project is funded by the Prins Bernhard Cultuur Fonds.

The archaeologists want to know how a house was build about 4000 years ago, how efficiently the different tools were, what challenges the materials offered, and what the implementation of such a project meant for a local community.

For the construction of the house, only Stone Age tools such as stone axes, bone adzes and flint sickles will be used. As this is a scientific experiment, the amount of used resources, tools and working hours will be documented.

http://www.archaeology.leiden.edu/news-agenda/building-the-late-stone-age-house-archaeology.html

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Middle East Neolithic tools users “were the first lumberjacks”

18 Saturday Aug 2012

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During the Neolithic Period humans in the Near East made a drastic transition from hunter-gatherers to farmers settled in villages. A new study finds we can trace this shift in the development of Neolithic toolkits used to cut wood, suggesting the earliest farmers were also the earliest lumberjacks.

“Intensive woodworking and tree-felling was a phenomenon that only appeared with the onset of the major changes in human life, including the transition to agriculture and permanent villages,” researcher Ran Barkai said in a statement from Tel Aviv University.

“We can document step by step the transition from the absence of woodworking tools, to delicate woodworking tools, to heavier woodworking tools,” Barkai said, adding that this archeological record follows the “actual transition from the hunter-gatherer lifestyle tBarkai and his team documented these changes in tools found at the Motza archaeological site — located in Israel, just west of Jerusalem — which was inhabited by Neolithic groups for nearly five thousand years.

In the early stages of the Neolithic period, known as the Pre-Pottery Neolithic A (PPNA), humans were still gathering their food but they started settling in more permanent homes for the first time, laying the groundwork for complex communities. Analysis of the wear-and-tear on the small axes from this period at Motza shows that these tools were likely used for clearing brush, light carpentry and chopping and splitting small logs and tree branches, the researchers said.

In the next phase, the Pre-Pottery Neolithic B (PPNB), humans began farming and domesticating animals. At the same time, they added more heavy-duty axes to their toolkits, evidence from Motza shows. These heavier and larger tools could have been used to cut down trees and complete various building projects, like homes and animal pens, Barkai and his team explained in a paper in the journal PLoS ONE.

These changes also happened in step with the rise of rectangular structures in Neolithic settlements, which required more wood.

“Evidence tells that us that for each home, approximately 10 wooden beams were needed,” Barkai said. “Prior to this, there were no homes with wooden beams.”

Read the full story here:-

http://www.livescience.com/22250-stone-age-tools-show-rise-of-lumberjacks.html?utm_source=feedburner&utm_medium=feed&utm_campaign=Feed%3A+Livesciencecom+%28LiveScience.com+Science+Headline+Feed%29

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Earliest evidence of Palaeolithic art

06 Monday Aug 2012

Posted by richardmilton in Stone age tools

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stone age tools

The history of ceramic art and pottery has had a new chapter added. It had been widely believed by historians, who had studied early ceramics, that the technologies needed had only started to be developed in approximately 8,000 BCE, as the communities of the Neolithic era had started to settle. However, intensive research by a combined team from the University of Cambridge (England) and colleagues in Croatia has pushed back the boundary by nearly 7,500 years.
The research, ongoing since 2010, has centred around an area in Croatia, on the Adriatic coast, known as Vela Spila. Several (36 in total) fragments of ceramic models have been found, of various four legged animals. The models are well made, by craftsmen, and have been attributed to the ‘Epigravettian’ culture, which had a life span of over 12,000 years, and the carbon dating of the fragments found places them squarely within this period.      Dr Preston Miracle, of the University of Cambridge, has a possible explanation for the anomaly, “It is extremely unusual to find ceramic art this early in prehistory. The finds at Vela Spila seem to represent the first evidence of Palaeolithic ceramic art at the end of the last Ice Age. They appear to have been developed independently of anything that had come before. We are starting to see that several distinct Palaeolithic societies made art from ceramic materials long before the Neolithic era, when ceramics became more common and were usually used for more functional purposes”.

See http://www.stonepages.com/news/#4827

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Recent Posts

  • 2 million year old possible human ancestor reconstructed
  • Developing lithic techniques may indicate growth in intellectual capacity
  • When did modern humans leave Africa?
  • How to make a bow and arrows using flint tools
  • Why would anyone want to retouch a flint tool?

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