Bahkan ada yg percaya jg kibulan sebangsa kibulan Maurice Bucaille kayak si pinpin
>________________________________ > From: Bukan Pedanda <[email protected]> >To: [email protected] >Sent: Thursday, August 9, 2012 4:27 AM >Subject: [proletar] SD: Early Human Ancestors Had More Variable Diet > > > > > >http://www.bbc.co.uk/news/science-environment-19184370 > >Dan manusia yang dungu- dungu kayak anjing seperti Abbas Amin, arra_s, ayub >yahya, Dipo, johny-indon, PAREWA PAREWA, Pinpin, rezameutia, Roman Proteus >safin_blanc masih saua percaya bualan orang Arab primitif penyusun khurafah >najis al-Mushaf yang membual bilang tahayul allah hasil khayalan orang Arab >primiitf itu menciptakan Adam dari tanah lihat... > >Otak yagn bisa dipakai buat berfikri dan harga diri itulah yagn tidak dimiliki >Abbas Amin, arra_s, ayub yahya, Dipo, johny-indon, PAREWA PAREWA, Pinpin, >rezameutia, Roman Proteus safin_blanc itu. > >Web address: >http://www.sciencedaily.com/releases/2012/08/ >120808132711.htm >Early Human Ancestors Had More Variable Diet >enlarge > >Scientists conducted an analysis of the fossil teeth, indicating that >Australopithecus, a predecessor of early Homo, had a more varied diet than >early Homo. (Credit: Image courtesy of University of the Witwatersrand) > >ScienceDaily (Aug. 8, 2012) — New research sheds more light on the diet and >home ranges of early hominins belonging to three different genera, notably >Australopithecus, Paranthropus and Homo -- that were discovered at sites such >as Sterkfontein, Swartkrans and Kromdraai in the Cradle of Humankind, about 50 >kilometres from Johannesburg. Australopithecus existed before the other two >genera evolved about 2 million years ago. > >Scientists conducted an analysis of the fossil teeth, indicating that >Australopithecus, a predecessor of early Homo, had a more varied diet than >early Homo. Its diet was also more variable than the diet of another distant >human relative known as Paranthropus. > >An international team of researchers, including Professor Francis Thackeray, >Director of the Institute for Human Evolution at Wits University, will be >publishing their latest research on what our early ancestors ate, online in >the journal, Nature, on August 8, 2012. The paper titled 'Evidence for diet >but not landscape use in South African early hominins' was authored by Vincent >Balter from the Ecole Normale Supérieure in Lyon, France; Jose´ Braga from the >Université de Toulouse Paul Sabatier in Toulouse in France; Philippe Te´louk >from the Ecole Normale Supérieure in Lyon in France; and Thackeray from the >University of the Witwatersrand in Johannesburg in South Africa. > >According to Thackeray, the results of the study show that Paranthropus had a >primarily herbivorous-like diet, while Homo included a greater consumption of >meat. > >Signatures of essential chemical elements have been found in trace amounts in >the tooth enamel of the three fossils genera, and the results are indicators >of what South African hominins ate and what their habitat preferences were. > >Strontium and barium levels in organic tissues, including teeth, decrease in >animals higher in the food chain. The scientists used a laser ablation device, >which allowed them to sample very small quantities of fossil material for >analysis. Since the laser beam was pointed along the growth prisms of dental >enamel, it was possible to reconstruct the dietary changes for each hominin >individual. > >Thackeray states that the greater consumption of meat in the diet of early >forms of Homo could have contributed to the increase in brain size in this >genus. > >Australopithecus probably ate both meat and the leaves and fruits of woody >plants. The composition of this diet may have varied seasonally. > >Apart from the dietary differences, the new results indicate that the >home-range area was of similar size for species of the three hominin genera. > >The scientists have also measured the strontium isotope composition of dental >enamel. Strontium isotope compositions are free of dietary effects but are >characteristic of the geological substrate on which the animals lived. > >According to the results all the hominids lived in the same general area, not >far from the caves where their bones and teeth are found today. > >Professor Vincent Balter of the Geological Laboratory of Lyon in France, >suggests that up until two millions years ago in South Africa, the >Australopithecines were generalists, but gave up their broad niche to >Paranthropus and Homo, both being more specialised than their common ancestor. >Share this story on Facebook, Twitter, and Google: > >Other social bookmarking and sharing tools: >Share on reddit Share on stumbleupon Share on pinterest_share Share on blogger >Share on digg Share on fark Share on linkedin Share on myspace Share on >newsvine | 17 > >Story Source: > >The above story is reprinted from materials provided by University of the >Witwatersrand, via EurekAlert!, a service of AAAS. > >Note: Materials may be edited for content and length. For further information, >please contact the source cited above. > >Need to cite this story in your essay, paper, or report? Use one of the >following formats: >APA > >MLA >University of the Witwatersrand (2012, August 8). Early human ancestors had >more variable diet. ScienceDaily. Retrieved August 8, 2012, from >http://www.sciencedaily.com /releases/2012/08/120808132711.htm > >Note: If no author is given, the source is cited instead. > >Disclaimer: Views expressed in this article do not necessarily reflect those >of ScienceDaily or its staff. > > > > > [Non-text portions of this message have been removed] ------------------------------------ Post message: [email protected] Subscribe : [email protected] Unsubscribe : [email protected] List owner : [email protected] Homepage : http://proletar.8m.com/Yahoo! 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