"Lucy," who belongs to the group ________, was a bipedal hominin with a brain smaller than that of humans.

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Lucy belongs to the Australopithecus group, which is a genus of extinct bipedal hominins that lived in Africa between 4.2 and 2.0 million years ago. Lucy's scientific name is Australopithecus afarensis, and she is considered one of the most complete and best-preserved fossils of this group. Although Lucy had a small brain (about the size of a chimpanzee's), her fossil shows that she walked upright on two legs, which was a significant development in the evolution of humans.

"Lucy," Who Belongs to the Group ________, Was a Bipedal