Paleoanthropology : Since the beginning of excavations in the country in the 1960s , Ethiopia shows an extremely rich paleontological heritage which still today generates new discoveries. Ethiopia , located in the Great Rift Valley , and is the country where were discovered the oldest remains of Homo sapiens on globeNote It is also one with Chad, which was discovered Sahelanthropus tchadensis , aka Toumaï -old 6 to 7 million years ago, and Kenya with Orrorin old tugenensis 6 million years , one of the countries where there are the remains of the oldest hominidésNote 2 . The best known of them , Dinknesh , commonly called Lucy was discovered November 30, 1974 at Hadar on the banks of the Awash River as part of the International Afar Research Expedition , a project involving thirty American researchers, french and Ethiopian . Dated to 3.2 million years Dinknesh belongs to the genus Australopithecus afarensis , cousin of the genus homo , this is the first relatively complete that has been discovered for a period as old fossil, and also revolutionized our view of the origins human , showing that the acquisition of biped went back to 4-3 million years7 . In February 2001, an Ethiopian and American team led by paleontologists Yohannes Haile - Selassie and Tim White announced the discovery of a child from 5.2 to 5.8 million years hominid . The Ardipithecus kadabba (from Afar base ancestor of the family) , considered as belonging to the same species as Ardipithecus ramidus ( Ardi of Afar , land and Ramid root) 8. In January 2005, the journal Nature has discovered new representatives of the species Ardipithecus kadabba northeast of Ethiopia team Sileshi Semaw ( Indiana University ) 9.10 . In February 2008, the fossil of an ancestor of African great apes are found in the Afar region of Ethiopia and by a Japanese team. Aged 10 million years Chororapithecus abyssinicus could be a primitive gorilla or represent an independent branch close to that of gorilles11 . In February 2005, the fossilized remains of a skeleton that could be the oldest "exclusive bipedal " ever discovered (aged 3.8 to 4 million years ) , is revealed around the city of Thousand in Afar region by a team of Ethiopian and American paleontologists , co-directed by Bruce Latimer, director of the Museum of Natural History Cleveland (United States ) and the Ethiopian scholar Yohannes Haile Selassié12 . However, the most important discovery is that the oldest representative of moderne2 rights, including through dating in February 2005, Ian McDougal two skulls named Omo 1 and Omo 2 Kibish discovered in 1967 in Ethiopia. From the sediments in which the skulls were found , they were dated to about 195,000 years , thus constituting the oldest remains of Homo sapiens discovered on globe13 , 14 . Geological map of the Afar depression In June 2003 an international team led by Tim White , F. Clark Howell ( Berkeley, California ) , and Berhane Asfaw ( Research Centre of the Rift Valley , Addis Ababa ) updates the fossil called Homo sapiens idaltu ( idaltu meaning "elder" in the Afar language , region digs ) 15. Dated 154,000 years , commonly called " man Hertog ," it is with Omo Omo 1 and 2 the oldest representative of the species Homo sapiens. The discovery was made near the village of Hertog , 225 km northeast of the Ethiopian capital Addis Ababa. Berhane Asfaw shows " With Homo sapiens idaltu , you have now in Ethiopia the entire sequence of human evolution ," 16 American Scientist as the newspaper in December 2003 : "We are all Africans" 3 . Dinknesh and Ardipithecus kadabba are nowadays exposed to the National Museum in Addis Ababa.
Posted on: Wed, 25 Sep 2013 05:56:58 +0000
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