The role of the Lucy fossil: perhaps she was not our direct ancestor after all?

The iconic Lucy fossil, Australopithecus afarensis, was regarded for decades as one of the best-known links in human evolution. However, based on the latest research and fossil discoveries, its role in the line of direct ancestors has become questionable, sparking intense debate among anthropologists.

One of the most famous and iconic fossils studied in human evolution is Lucy, discovered in Ethiopia in 1974. The 3.2-million-year-old specimen belongs to the species Australopithecus afarensis, which walked on two legs and had an upright posture similar to that of modern humans. Because of these characteristics, it was long believed that Lucy could be our direct ancestor, the starting point for the evolution of all later hominins. This assumption, however, now appears to be increasingly uncertain, reports Live Science.

The roots of the debate

The human family tree is far from linear. Over the decades, more and more fossils have been unearthed, and numerous ancient human relatives have been discovered living at the same time, making it increasingly difficult to determine exactly which species we descend from. The Taung Child, discovered in 1925 and belonging to Australopithecus africanus, was long considered the direct ancestor of humans, until the discovery of the Lucy fossil reshaped this view and elevated Australopithecus afarensis to a central role.

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New fossils, new theories

A recent study published in the journal Nature offers a new perspective on the status of the Lucy fossil. Researchers have recently discovered new foot and dental remains attributed to the species Australopithecus deyiremeda. This species lived 3.3–3.5 million years ago at the same time as Lucy in Ethiopia and, while it walked on two legs, spent much of its time in trees.