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Afarensis dating

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Discovered by Donald Johanson and Tom Gray in 1974 at Hadar in Ethiopia (Johanson and Edey 1981; Johanson and Taieb 1976). Lucy was an adult female of about 25 years and was assigned to the species Australopithecus afarensis.About 40% of her skeleton was found, and her pelvis, femur (the upper leg bone) and tibia show her to have been bipedal, although there is evidence that afarensis was also partly arboreal (tree-dwelling).There was discussion of the risks of damage to the unique fossils, and other museums preferred to display casts of the fossil assembly.Laetoli is a site in Tanzania, dated to the Plio-Pleistocene and famous for its hominin footprints, preserved in volcanic ash.In other words, humans have much shorter arms compared to their legs than chimpanzees do, and Lucy falls roughly in the middle.Lucy is the common name of AL 288-1, several hundred pieces of bone fossils representing 40 percent of the skeleton of a female of the hominin species Australopithecus afarensis.Amandus Kwekason of the National Museum of Tanzania and Dr.

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The location and tracks were discovered by archaeologist Mary Leakey in 1976, and were excavated by 1978.

"Lucy" acquired her name from the song "Lucy in the Sky with Diamonds" by The Beatles, which was played loudly and repeatedly in the expedition camp all evening after the excavation team's first day of work on the recovery site.

After public announcement of the discovery, Lucy captured much public interest, becoming a household name at the time.

The conclusions that are drawn from the evidence are often and have often been very much exaggerated to fit personal beliefs and biases.

Yes, even scientists have biases and favorite theories.