Australopithecus afarensis, the extinct species to which Lucy belongs, could probably straighten its knee joints, extend its hips and stand up straight like modern humans.
Our 3.2 million-year-old ancestor"Lucy" could stand and walk upright just like modern humans do, new 3D muscle modeling reveals.
"Lucy's muscles suggest that she was as proficient at bipedalism as we are, while possibly also being at home in the trees," Ashleigh Wiseman, a research associate at the University of Cambridge's McDonald Institute for Archaeological Research in the U.K. who conducted the modeling study, said in a statement."She would have been able to exploit both habitats effectively.
The reconstruction shows that Lucy could straighten her knee joints and extend her hips in a similar way to modern humans, suggesting that the species could stand and walk upright.
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