@article{Kimbel2014-fp, author = "W. H. Kimbel and G. Suwa and B. Asfaw and Y. Rak and T. D. White", title = "Ardipithecus ramidus and the evolution of the human cranial base", year = 2014, journal = "Proc. Natl. Acad. Sci. U. S. A.", volume = 111, number = 3, pages = "948-953", month = "Jan", keywords = "fossil record, human origins, occipital bone, skull, temporal bone" }