Site: Tugen Hills, Kenya
Year of Discovery:
Discovered by: A team led by Brigitte Senut and Martin Pickford
Age: About 6 million years old
Species: Orrorin tugenensis
Beginning to walking upright on short legs
The upper part of this femur (thigh bone) is similar in size to those of other large apes. But the angled part more closely resembles that of modern humans. It formed a strong bridge with the hip to support the body’s weight, suggesting Orrorin tugenensis walked upright.