F. Spoor, M. G. Leakey, P. N. Gathogo, F. H. Brown, S. C. Anton, I. McDougall, C. Kiarie, F. K. Manthi, and L. N. Leakey. Implications of new early Homo fossils from Ileret, east of Lake Turkana, Kenya. Nature, Springer Science and Business Media LLC, volume 448, issue 7154, pages 688-691, August 2007.

P. N. Gathogo and F. H. Brown. Revised stratigraphy of Area 123, Koobi Fora, Kenya, and new age estimates of its fossil mammals, including hominins. J. Hum. Evol., volume 51, issue 5, pages 471-479, November 2006.

M. G. Leakey, F. Spoor, F. H. Brown, P. N. Gathogo, C. Kiarie, L. N. Leakey, and I. McDougall. New hominin genus from eastern Africa shows diverse Middle Pliocene lineages. Nature, volume 410, issue 6827, pages 433-440, March 2001.