For 33.000 years ago used people also “likes” in order to create good atmosphere and strengthen the friendship. But at the time, “likes” physical objects.

It believes a group of scientists from the University of Michigan.

the Scientists came on the track of nettverksbygginga in the stone age, when they found beads made of the shell to strutseegg. The beads were found in southern Africa. In areas where ostriches never have spankulert.

ANCIENT BEADS: Found in areas where there are struts.

Photo: John Klausmeyer, Yuchao Zhao, and Brian Stewart

the Pieces of the eggshell tells why a story about gaveutveksling over large distances – an early social network for over thirty thousand years ago.

– Jewellery of strutseegg worked in many ways as steinalderversjonen of current “likes” on Facebook or Twitter. It tells Brian Stewart, anthropologist at the University of Michigan to NRK.

Eggeskallperlene contains enough information to tell the story of their journey, if you know where to look.

A shell travelling

So can the journey have been:

For 33.000 years ago, one struts around and ate the grass that grows on the skiferbakken in the Karroo desert in South Africa. In the grass there are traces of the schists, which are part of the strutseegget.

A woman from a tribe of hunters and sankere find the egg, and eats it. She smashes the shell, thread the pieces on a string. She files them so they resemble pearls.

Cord with the beads she takes to some friends who live further east. They govern over the areas where there is better access on the water. Therefore, she gives the beads in the gift to strengthen the friendship with the people in the nabostammen.

the Neighbors gives the beads on, with the same purpose, to other tribes that they need to have a good relationship. In the end, perlekjedet with a tribe who live high in the eastern mountains.

ARCHEOLOGICAL FINDS: Beads from southern Africa

Photo: Jennifer Miller

33.000 years later a researcher from the University of Michigan charms, in what is now the country of Lesotho.

A small, mountainous country surrounded by South Africa on all sides. But there is no evidence to suggest that the beads were made here, for struts live usually not here.

So where they came from?

Tiny skiferspor

Tiny pieces of slate from the ground was with down in the stomach of ostriches when it ate the grass.

the Slate contains the radioactive isotope Strontium 87. And traces of strontium are with when the eggshell is formed in the body of the bird.

the Beads was tested by use of a method called strontium-isotopanalyse to find out where they came from.

the Old rocks such as gneiss and granite contains more strontium than the younger rocks such as basalt. The highlands of Lesotho consists mostly of basalt.

Strontiuminnholdet in the beads that Stewart found were too high and that it could stem from the place where they were found.

GRAVES IN AFRICA: Archaeologists looking for the remains of strutseegg.

Photo: Brian Stewart

According to the analysis could be almost 80 per cent of the beads do not come from Lesotho, even though they were found there.

the research team to Stewart found out that some beads came very from afar.

the Analysis shows that the beads must at least have traveled 325 miles. They may have been made by hunter – and sankerfolk as far as 1000 km away.

SITUATED ON the GROUND: IN the shell from strutseeggene found traces of strontium.

Photo: laflor / /iStockphoto

Strontium analysis has previously been used on teeth and bones from skeletons. On the way, archeologists say something about how the dead came from.

– But this is the first time that this method has been used on the skin from the strutseegg, ” says Brian Stewart.

don’t Think it was commodity

Torfinn Ørmen is an expert on fortidsmennesker by OsloMet. He believes it is elegantly done to investigate the strontiuminnholdet to find out where the beads can come from.

Ørmen say the u.s. researchers may be right in that the beads ended up in Lesotho because of social networking, but that there also exists another possible explanation for this.

He says perlekjedene also could have been a commodity. According to Ørmen goes the exchange of goods over long distances back to at least 110.000 years in Africa.

LOOKING FOR THE GEMS IN LESOTHO: the Anthropologist Brian Stewart are looking for jewelry from the past.

Photo: Brian Stewart

Brian Stewart, says to NRK that they can’t be a hundred percent certain that the beads were not distributed as a commodity. But he does not think this is a likely use of the beads for these steinalderfolkene.

– Beads has no benefit for people in the hunter and sankersamfunn. They do not have the same perception of the currency as we have in a capitalist society.

Beads of strutseegg are still used as symbolic gifts to strengthen friendship and ties between people. We can see this in hunter – and sankerfolk in southern Africa today, ” says Stewart.