“…Using tail length, Fooden (2000) classified living rhesus macaques (hereafter rhesuses) into three major groups: the eastern group, consisting of rhesuses in China and neighboring countries; the western group, consisting of those in India and its vicinity; and the southern group, consisting of those in the Indochinese peninsula. Although various divergence times, ranging from about 20 ka to 1.4 Ma, between the rhesus groups have been estimated from morphological and molecular evidence (Nozawa et al, 1977;Zhang and Shi, 1993;Hayasaka et al, 1996;Morales and Melnick, 1998;Fooden, 2000;Tosi et al, 2000Tosi et al, , 2003, exact phylogenetic relationships have yet to be elucidated.…”