@article{Pickford2002-xm, author = "M. Pickford and B. Senut and D. Gommery and J. Treil", title = "Bipedalism in Orrorin tugenensis revealed by its femora", year = 2002, journal = "C. R. Palevol", volume = 1, number = 4, pages = "191-203", month = "Sep", keywords = "bipedalism, upper miocene, tugen hills, kenya, femur, bip\'edie, miocène sup\'erieur, tugen hills, kenya, f\'emur" }