Sahelanthropus
In the later study by Arnason and colleagues, two independent nonprimate molecular references were used. These two references  suggested that the Cercopithecoidea/Hominoidea divergence took place >50 mya. Also, all hominoid divergences receive a much earlier dating. Thus, the estimated date of the divergence between Pan (chimpanzee) and Homo is 1013 mya and that between Gorilla and the Pan/Homo linage approximately 17 mya. The same datings were obtained in an analysis of clocklike evolving genes.