| Boaz, N.T.; Bernor, R.L.; Brooks, A.S.; Cooke, H.B.S.; Geinzelin, J.de; Dechamps, R.; Delson, E.; Gentry, A.W.; Harris, J.W.K.; Meylan, P. and others, 1992. A new evaluation of the significance of the Late Neogene Lusso Beds, Upper Semliki Valley, Zaire. Journal of Human Evolution 22: 505-517
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| Cooke, H.B.S., 1950. A critical review of the quaternary Perissodactyla of Southern Africa. Annals of the South African Museum 31 (4): 393-479, figs. 1-31
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| Cooke, H.B.S., 1950. A critical review of the quaternary Perissodactyla of Southern Africa. Annals of the South African Museum 31 (4): 393-479, figs. 1-31
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