An important feature of modern humans can already be seen in the 4-million-year-old Australopithecus fossils, namely walking upright on two legs (bipedal).
What did Australopithecus have in common with modern humans?
They were similar to modern humans in that they were bipedal (walking on two legs), but like apes, they had small brains. Their tusks were smaller than those of apes and their molars were larger than those of modern humans. The most famous Australopithecus specimen is "Lucy", a very well-preserved fossil skeleton from Ethiopia, which is 3.2 million years old.
Australopithecus is an extinct group of primates closely related to modern humans, if not ancestors, that is known from fossils found at several sites in eastern, north-central, and southern Africa.
Learn more about Australopithecus fossils at https://brainly.com/question/1366099
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