A partial pelvis of Australopithecus sediba. Academic Article uri icon


  • The fossil record of the hominin pelvis reflects important evolutionary changes in locomotion and parturition. The partial pelves of two individuals of Australopithecus sediba were reconstructed from previously reported finds and new material. These remains share some features with australopiths, such as large biacetabular diameter, small sacral and coxal joints, and long pubic rami. The specimens also share derived features with Homo, including more vertically oriented and sigmoid-shaped iliac blades, greater robusticity of the iliac body, sinusoidal anterior iliac borders, shortened ischia, and more superiorly oriented pubic rami. These derived features appear in a species with a small adult brain size, suggesting that the birthing of larger-brained babies was not driving the evolution of the pelvis at this time.

published proceedings

  • Science

altmetric score

  • 101.006

author list (cited authors)

  • Kibii, J. M., Churchill, S. E., Schmid, P., Carlson, K. J., Reed, N. D., de Ruiter, D. J., & Berger, L. R.

citation count

  • 119

complete list of authors

  • Kibii, Job M||Churchill, Steven E||Schmid, Peter||Carlson, Kristian J||Reed, Nichelle D||de Ruiter, Darryl J||Berger, Lee R

publication date

  • September 2011