Excavating Ardi Enlarged Photos Section

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Fossil hunters in Ethiopia are excavating a mandible, or lower jaw, of Ardipithecus ramidus. A fairly complete skeleton of this individual, nicknamed Ardi, is 4.4-million-years-old. It lived well before and was much more primitive than the 3.2-million-year-old Lucy skeleton, of the species Australopithecus afarensis. Unveiling the Ardi remains this week, scientists said this was the earliest known skeleton of a potential human ancestor. (Photo: Tim White and David L. Brill)
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Ardi was discovered in the arid badlands along the middle stretch of the Awash River, near the village of Aramis in Ethiopia. Arid now, it was a cooler, humid woodland in the time of the early hominids Ardipithecus ramidus. (Photo: David L. Brill)
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For the past 17 years, scientists collected fragments, some tiny pieces of bone, that represented more than 110 specimens from a minimum of 36 different individuals of the Ardipthecus species, including Ardi. (Photo: David L. Brill)
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The few modern Homo sapiens living near the discovery site at Aramis include this Ethiopian goat herder. (Photo: David L. Brill)
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Since the first tooth of the new species was picked up in 1992, members of the Middle Awash research project returned year after year to explore the remote site. Here they are on the dusty trail, driving to camp from a survey trip. (Photo: David L. Brill)
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The excavation team sits down to breakfast before heading off on another day of fossil hunting in the Middle Awash region of Ethiopia. (Photo: David L. Brill)
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An Ethiopian herder, one of the Afar people, moves his stock from the Awash River toward Yardi Lake. (Photo: David L. Brill)
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Berhane Asfaw, an Ethiopian paleoanthropologist, works with the local Afars who occupy the lands of the area of the Ardipithecus discoveries. (Photo: David L. Brill)
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At the discovery site, Tim D. White, left, a leader of the project, and Yohannes Haile-Selassie crawl over the parched surface looking for the tiniest fossil fragments.(Photo: David L. Brill)
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A collection of the fossilized bones that were assembled into the partial skeleton of Ardi. (Photo: David L. Brill)
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This is the site, known as Yonas Arm, that yielded fossil evidence of Ardipithecus ramidus. (Photo: David L. Brill)
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Scientists have identified both primitive and evolved characteristics of the 4.4-million-year-old Ardi hominid. Here, the hand bones were more like those of earlier apes. (Photo: David L. Brill)
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The Ardipithecus specimen, an adult female, probably stood four feet tall and weighed about 120 pounds, almost a foot taller and twice the weight of Lucy. The paleoanthropologists wrote in one of the articles that Ardipithecus was “so rife with anatomical surprises that no one could have imagined it without direct fossil evidence.” (Photo: Tim White 2008, from the Oct. 2 issue of Science)
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