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Donald Johanson's discoveries, particularly the fossilized remains of "Lucy" (Australopithecus afarensis) in 1974, were crucial for understanding human evolution. Lucy's skeletal structure provided key evidence of bipedalism in early hominins, indicating a significant shift from tree-dwelling ancestors to walking upright. This finding helped bridge gaps in the evolutionary timeline and offered insights into the development of human traits. Johanson's work fundamentally changed the perception of our lineage and highlighted the complexity of human evolution.

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Why is Donald Johnson discoveries were so important?

Donald Johanson's discoveries, particularly the fossil known as "Lucy," were crucial because they provided significant insights into human evolution. Lucy, a 3.2 million-year-old Australopithecus afarensis, revealed key characteristics of bipedalism and helped bridge the gap between modern humans and our ancient ancestors. His work emphasized the importance of Africa as a cradle of human evolution and reshaped our understanding of the timeline and development of hominins. Overall, Johanson's findings have had a lasting impact on anthropology and paleontology, influencing the way we study human origins.


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Assuming you mean jointly, the two worked together on the Lucy fossil, or Australopithicus afarensis. Lucy is important for a number of reasons. First, she was one of the oldest hominid fossils found at the time. Second, she was clearly bipedal while still having a small brain. Previous theories assumed that bipedalism would be foreshadowed or at least accompanied by larger cranial capacity, which was now disproved. The two didn't work together long and eventually had a falling out.


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