G. WoldeGabriel, S. H. Ambrose, D. Barboni, R. Bonnefille, L. Bremond, B. Currie, D. DeGusta, W. K. Hart, A. M. Murray, P. R. Renne, M. C. Jolly-Saad, K. M. Stewart, and T. D. White. The geological, isotopic, botanical, invertebrate, and lower vertebrate surroundings of Ardipithecus ramidus. Science, volume 326, issue 5949, pages 65e1-5, October 2009. G. WoldeGabriel, S. H. Ambrose, D. Barboni, R. Bonnefille, L. Bremond, B. Currie, D. DeGusta, W. K. Hart, A. M. Murray, P. R. Renne, M. C. Jolly-Saad, K. M. Stewart, and T. D. White. The geological, isotopic, botanical, invertebrate, and lower vertebrate surroundings of Ardipithecus ramidus. Science, volume 326, issue 5949, pages 65e1-5, October 2009. J. D. Clark, Y. Beyene, G. WoldeGabriel, W. K. Hart, P. R. Renne, H. Gilbert, A. Defleur, G. Suwa, S. Katoh, K. R. Ludwig, J.-R. Boisserie, B. Asfaw, and T. White. Stratigraphic, chronological and behavioural contexts of Pleistocene Homo sapiens from Middle Awash, Ethiopia. volume 423, issue 122003, pages 747-752, 2003. B. Asfaw, W. H. Gilbert, Y. Beyene, W. K. Hart, P. R. Renne, G. WoldeGabriel, E. S. Vrba, and T. D. White. Remains of Homo erectus from Bouri, Middle Awash, Ethiopia. Nature, volume 416, issue 6878, pages 317-320, 2002. T. D. White, G. Suwa, W. K. Hart, R. C. Walter, G. WoldeGabriel, J. de Heinzelin, J. D. Clark, B. Asfaw, and E. Vrba. New discoveries of Australopithecus at Maka in Ethiopia. Nature, volume 366, issue 6452, pages 261-265, November 1993.