The skeleton of Lucy, the 3.2-million-year-old Australopithecus afarensis, whose fossilized remains are among the most famous in archaeology, was found in Ethiopia in 1974. This three-dimensional model represents what she might have looked like all those years ago.
"She showed us conclusively that upright walking and bipedalism preceded all of the other changes we'd normally consider being human, such as tool-making. She gave us a glimpse of what older ancestors would look like. Lucy is really at a nice point on the family tree: she sits at this pivotal point between things that are more ancient and things that are more modern." -Donald C. Johnson, 2009