Question

How is Lucy, the A. Afarensis, evidence of evolution?

Answer 1

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Lucy is famous for revealing a complete skeleton of Australopithecus afarensis, considered to be a direct ancestor of modern homo sapeins.

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Answer 2

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Lucy was regarded as the oldest known direct ancestor of humans.

Lucy is estimated to be 3 million years old. The fossil evidence discovered in 1973 is that Lucy was a small erect chimp like animal. Scientist have proposed a sequence of replacement of older populations with newer " more fit" populations, starting with Lucy.

Lucy Australopitheus afrarenis is thought to have evolved into Homo habilis, to Homo erectus archaic forms of Homo sapiens to modern humans. Hence the importance of the fossil name Lucy.

A fossil known as KP 271 found at Kanapoi was dated as 4 - 4.5 million years old. However Henry M McHenry of the University of California Davis wrote " The results show that the Kanapoi specimen ( KP 271) dated 4 to 4.5 million years old is indistinguishable from Modern Homo sapiens ( Science 190 31 Oct. 1975 page 428)

The discovery of a fossil thought to be older than Lucy yet more advanced calls into question her importance as evidence of human evolution from more primitive ancestors.

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