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A. afarensis is now a widely accepted species, and it is now generally thought that Homo and Paranthropus are sister taxa deriving from Australopithecus, but the classification of Australopithecus species is in disarray. Australopithecus is considered a grade taxon whose members are united by their similar physiology rather than close relations ...
Australopithecus afarensis at National Museum of Ethiopia. In 1974, American paleoanthropologist Donald Johnson excavated a 3.2-million-year-old early female Australopithecus afarensis (nicknamed "Lucy") in Hadar in the Awash Valley. Ethiopians refer to the fossil as "Dinqnesh". Lucy weighed about 60 pounds and stood three and a half feet tall. [3]
The genera Homo (which includes modern humans), Paranthropus, and Kenyanthropus evolved from some Australopithecus species. Australopithecus is a member of the subtribe Australopithecina, [4] [5] which sometimes also includes Ardipithecus, [6] though the term "australopithecine" is sometimes used to refer only to members of Australopithecus.
Lucy’s discovery transformed our understanding of human origins. Don Johanson, who unearthed the Australopithecus afarensis remains in 1974, recalls the moment he found the iconic fossil.
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 ...
H. habilis is intermediate between Australopithecus afarensis and H. erectus, and there have been suggestions to re-classify it within genus Australopithecus, as Australopithecus habilis. 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 .
The specimens recovered display a variety of different primitive cranial post features, which indicate A. afarensis is distinct from other species of Australopithecus: small cranial capacity, palate similar to African apes (parallel tooth rows, shallow, long from front to back, narrow from side to side), primitive occipital, basal cranium ...
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