Boschetto, H.B.; Brown, F.H.; McDougall, I. (1992). "Stratigraphy of the Lothidok Range, northern Kenya, and K-Ar ages of its Miocene primates". Journal of Human Evolution. 22 (1): 47–71. Bibcode:1992JHumE..22...47B. doi:10.1016/0047-2484(92)90029-9.
Disotell, T. R.; Noviello, C. M.; Raaum, R. L.; Sterner, K. N.; Stewart, C. (2005). "Catarrhine primate divergence dates estimated from complete mitochondrial genomes: concordance with fossil and nuclear DNA evidence". Journal of Human Evolution. 48 (3): 237–257. Bibcode:2005JHumE..48..237R. doi:10.1016/j.jhevol.2004.11.007. PMID15737392.
Boschetto, H.B.; Brown, F.H.; McDougall, I. (1992). "Stratigraphy of the Lothidok Range, northern Kenya, and K-Ar ages of its Miocene primates". Journal of Human Evolution. 22 (1): 47–71. Bibcode:1992JHumE..22...47B. doi:10.1016/0047-2484(92)90029-9.
Disotell, T. R.; Noviello, C. M.; Raaum, R. L.; Sterner, K. N.; Stewart, C. (2005). "Catarrhine primate divergence dates estimated from complete mitochondrial genomes: concordance with fossil and nuclear DNA evidence". Journal of Human Evolution. 48 (3): 237–257. Bibcode:2005JHumE..48..237R. doi:10.1016/j.jhevol.2004.11.007. PMID15737392.
Disotell, T. R.; Noviello, C. M.; Raaum, R. L.; Sterner, K. N.; Stewart, C. (2005). "Catarrhine primate divergence dates estimated from complete mitochondrial genomes: concordance with fossil and nuclear DNA evidence". Journal of Human Evolution. 48 (3): 237–257. Bibcode:2005JHumE..48..237R. doi:10.1016/j.jhevol.2004.11.007. PMID15737392.