Lucy Died After Falling From Tree


“Lucy,” the famous upright-walking human ancestor who is estimated to be more than 3 million years old, may have died after from falling from a tree, according to a study published Monday in the journal Nature by researchers from the University of Texas at Austin.

What caused Lucy’s death has been the source of much debate in the scientific community since the discovery of her partial skeleton in 1974.

At 3.18-million-years-old, Lucy’s skeleton is one of the oldest and most complete fossils of an erect-walking hominim ever discovered, according to a statement from UT Austin announcing the research. Lucy’s remains have also caused a major debate over whether her species (Australopithecus afarensis) was arboreal, or spent time in trees, according to the UT Austin researchers.

An autopsy performed on her remains suggests that she did spend some time in trees, according to John Kappelman, a UT Austin professor and the lead author of the study, who calls the cause of death “ironic.”

“It is ironic that the fossil at the center of a debate about the role of arborealism in human evolution likely died from injuries suffered from a fall out of a tree,” Kappelman, the professor of anthropology and geological sciences at UT Austin, said in a statement.

Kappelman studied thousands of high-resolution CT scans of Lucy’s remains and noticed unusual fractures in her bones, which led him to theorize that Lucy may have fallen to her death. He believes that Lucy most likely sought refuge in trees during the night, according to a statement from UT Austin.

“When the extent of Lucy’s multiple injuries first came into focus, her image popped into my mind’s eye, and I felt a jump of empathy across time and space,” Kappelman said. “Lucy was no longer simply a box of bones but in death became a real individual: a small, broken body lying helpless at the bottom of a tree.”

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