TEMPE, AZ (AZFamily) — Fifty years ago, Arizona State Professor Donald Johanson discovered the Lucy fossil skeleton—dated at over 3 million years old. The finding has been revolutionary for ...

American anthropologist Donald Johanson first noticed what appeared to be a human-like elbow while out looking for fossils with a graduate student on Nov. 24, 1974, at Afar, Ethiopia, and soon spied ...

New ideas about evolution thanks to a knee bone When paleoanthropologist Donald Johanson first found the skeleton in a remote region of Ethiopia in 1974, the bones seemed unremarkable. But one ...

anamensis walked on two feet. This species includes "Lucy," the 3.2 million year old fossil found by Donald Johanson. A. afarensis' small braincases and relatively large teeth and chewing muscles ...