- Brian Richmond, The George Washington University, Washington, DC
- William Jungers, Stony Brook University, Stony Brook, NY
- Richmond, B. G. and W. L. Jungers. “Orrorin tugenesis Femoral Morphology and the Evolution of Hominin Bipedalism.” Science 319, March 21, 2008.
- Brian Richmond (Jessica McConnell)
- Orrorin thighbone (Brian Richmond)
- Bone illustrations (AMNH)
- Skull models (NYCEP Morphometrics Group)