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Lucy Catalog no. AL 288-1 Common name Lucy Species Australopithecus afarensis Age 3.2 million years Place discovered Afar Depression, Ethiopia Date discovered November 24, 1974 ; 50 years ago (1974-11-24) Discovered by Donald Johanson Maurice Taieb Yves Coppens Tom Gray AL 288-1, commonly known as Lucy or Dinkʼinesh, is a collection of several hundred pieces of fossilized bone comprising 40 ...
Pamela Alderman, a member of the expedition, suggested she be named "Lucy" after the Beatles' song "Lucy in the Sky with Diamonds," which was played repeatedly during the night of the discovery. A bipedal hominin , Lucy stood about three and a half feet tall; her bipedalism supported Raymond Dart's theory that australopithecines walked upright.
Lucy's ancestors had existed in a forested environment for 50 million years, living mainly on fruit. Lucy developed the ability to walk on 2 legs (bipedally) across grassland to cope with naturally occurring deforestation. By standing upright, Lucy could see further than other apes as a defence against predators.
LD 350-1 is now considered the earliest known specimen of the genus Homo, dating to 2.75–2.8 Ma, found in the Ledi-Geraru site in the Afar Region of Ethiopia. It is currently unassigned to a species, and it is unclear if it represents the ancestor to H. habilis and H. rudolfensis , which are estimated to have evolved around 2.4 Ma.
The brain volume of Lucy was estimated to have been 365–417 cc, specimen AL 822-1 about 374–392 cc, AL 333-45 about 486–492 cc, and AL 444-2 about 519–526 cc. This would make for an average of about 445 cc. The brain volumes of the infant (about 2.5 years of age) specimens DIK-1-1 and AL 333-105 are 273–277 and 310–315 cc, respectively.
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Lucy, a 40%-complete skeleton of a female A. afarensis, discovered 1974 in Hadar, Ethiopia; Selam, remains of a three-year-old A. afarensis female, discovered in Dikika, Ethiopia; MRD-VP-1/1, first skull of A. anamensis discovered in 2016 in Afar, Ethiopia. STS 5 (Mrs. Ples), the most complete skull of an A. africanus ever found in South Africa
2.50 Paranthropus aethiopicus: 1985 Kenya: Alan Walker: BOU-VP-12/130 [24] 2.50 Australopithecus garhi: 1997 Ethiopia: Yohannes Haile-Selassie: STS 71 [25] 2.61–2.07 Australopithecus africanus: 1947 Sterkfontein, South Africa: Robert Broom and John T. Robinson: Ditsong National Museum of Natural History STS 52: 2.61–2.07 Australopithecus ...