Sawada et al. 2006 - Sawada, Y.; Saneyoshi, M.; Nakayama, K.; Sakai, T.; Itaya, T.; Hyodo, M.; Mukokya, Y.; Pickford, M.; Senut, B.; Tanaka, S. (2006). "The Ages and Geological Backgrounds of Miocene Hominoids Nacholapithecus, Samburupithecus, and Orrorin from Kenya". Human Origins and Environmental Backgrounds. Developments in Primatology: Progress and Prospects. Springer. pp. 71–96. doi:10.1007/0-387-29798-7_6. ISBN 978-0-387-29638-8. https://doi.org/10.1007%2F0-387-29798-7_6
Henke & Hardt 2007, p. 1020 - Henke, W.; Hardt, T. (2007). Handbook of paleoanthropology. Springer. ISBN 978-3-540-32474-4. https://books.google.com/books?id=vhoRdbTrjc8C&pg=PA1020
Moyà-Solà et al. 2009 - Moyà-Solà, S.; Alba, D. M.; Almécija, S.; Casanovas-Vilar, I.; Köhler, M.; de Esteban-Trivigno, S.; Robles, J. M.; Galindo, J.; Fortuny, J. (2009). "A unique Middle Miocene European hominoid and the origins of the great ape and human clade". PNAS. 106 (24): 9601–06. Bibcode:2009PNAS..106.9601M. doi:10.1073/pnas.0811730106. PMC 2701031. PMID 19487676. https://www.ncbi.nlm.nih.gov/pmc/articles/PMC2701031
Ishida et al. 1984 - Ishida, H.; Pichford, M.; Nakaya, H.; Nakano, Y. (1984). "Fossil anthropoids from Nachola and Samburu Hills, Samburu District, Kenya". African Study Monographs. Supplementary Issue. 2 (2): 73–85. doi:10.14989/68314. https://doi.org/10.14989%2F68314
Ward et al. 1999 - Ward, S.; Brown, B.; Hill, A.; Kelley, J.; Downs, W. (1999). "Equatorius: A new hominoid genus from the middle Miocene of Kenya". Science. 285 (5432): 1382–1386. doi:10.1126/science.285.5432.1382. PMID 10464093. https://doi.org/10.1126%2Fscience.285.5432.1382
Cameron 2004 - Cameron, D. W. (2004). Hominid Adaptations and Extinctions. UNSW Press. ISBN 9780868407166. https://books.google.com/books?id=fnqzb4_UVfkC&pg=PA101
Cameron 2004, p. 101 - Cameron, D. W. (2004). Hominid Adaptations and Extinctions. UNSW Press. ISBN 9780868407166. https://books.google.com/books?id=fnqzb4_UVfkC&pg=PA101
Ishida et al. 1999 - Ishida, H.; Kunimatsu, Y.; Nakatsukasa, M.; Nakano, Y. (1999). "New hominoid genus from the Middle Miocene of Nachola, Kenya". Anthropological Science. 107 (2): 189–191. doi:10.1537/ase.107.189. https://doi.org/10.1537%2Fase.107.189
Russon & Begun 2004, p. 305 - Russon, A. E.; Begun, D. R. (2004). Russon, A. E.; Begun, D. R. (eds.). The Evolution of Thought: Evolutionary Origins of Great Ape Intelligence. Cambridge University Press. ISBN 9780521783354. https://books.google.com/books?id=DvV-WJHWcTsC&pg=PA305
Ishida et al. 2004, Abstract - Ishida, H.; Kunimatsu, Y.; Takano, T.; Nakano, Y.; Nakatsukasa, M. (2004). "Nacholapithecus skeleton from the Middle Miocene of Kenya". Journal of Human Evolution. 46 (1): 69–103. Bibcode:2004JHumE..46...69I. doi:10.1016/j.jhevol.2003.10.001. PMID 14698685. https://ui.adsabs.harvard.edu/abs/2004JHumE..46...69I
Zalmout et al. 2010 - Zalmout, I. S.; Sanders, W. J.; MacLatchy, L. M.; Gunnell, G. F.; Al-Mufarreh, Y. A.; Ali, M. A.; Nasser, A.-A. H.; Al-Masari, A. M.; Al-Sobhi, S. A.; Nadhra, A. O.; Matari, A. H.; Wilson, J. A.; Gingerich, P. D. (2010). "New Oligocene primate from Saudi Arabia and the divergence of apes and Old World monkeys". Nature. 466 (7304): 360–364. Bibcode:2010Natur.466..360Z. doi:10.1038/nature09094. PMID 20631798. S2CID 205220837. https://ui.adsabs.harvard.edu/abs/2010Natur.466..360Z
Nakatsukasa & Kunimatsu 2009, Abstract - Nakatsukasa, M.; Kunimatsu, Y. (May–June 2009). "Nacholapithecus and its importance for understanding hominoid evolution". Evolutionary Anthropology. 18 (3): 103–119. doi:10.1002/evan.20208. S2CID 84530387. https://doi.org/10.1002%2Fevan.20208
Sawada et al. 2006 - Sawada, Y.; Saneyoshi, M.; Nakayama, K.; Sakai, T.; Itaya, T.; Hyodo, M.; Mukokya, Y.; Pickford, M.; Senut, B.; Tanaka, S. (2006). "The Ages and Geological Backgrounds of Miocene Hominoids Nacholapithecus, Samburupithecus, and Orrorin from Kenya". Human Origins and Environmental Backgrounds. Developments in Primatology: Progress and Prospects. Springer. pp. 71–96. doi:10.1007/0-387-29798-7_6. ISBN 978-0-387-29638-8. https://doi.org/10.1007%2F0-387-29798-7_6
Ishida et al. 2006, p. 74 - Ishida, H.; Tuttle, R.; Pickford, M.; Ogihara, N.; Nakatsukasa, M. (2006). Ishida, H.; Tuttle, R.; Pickford, M.; Ogihara, N.; Nakatsukasa, M. (eds.). Human Origins and Environmental Backgrounds. Developments in Primatology: Progress and Prospects. Springer. ISBN 9780387296388. https://books.google.com/books?id=0KfjsoDXUtUC&pg=PA74