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References Alemseged, Z. 2003. An integrated approach to taphonomy and faunal change in the Shungura Formation (Ethiopia) and its implication for hominid evolution. Journal of Human Evolution 44: 451-478. Andrews, P. 1989. Paleoecology of Laetoli. Journal of Human Evolution 18: 173-181. Andrews, P., and M. Bamford. 2008. Past and present ecology of Laetoli, Tanzania. Journal of Hu- man Evolution 54: 78-98. Antón, S.C., and C.C. Swisher. 2004. Early dispersals of Homo from Africa. Annual Reviews of Anthropology 33: 271-296. Asfaw, B., C. Ebinger, D. Harding, T. White, and G. WoldeGabriel. 1990. Space based imagery in pa- leoanthropological research: An Ethiopian example. National geographic Research 6: 418-434. Asfaw, B., T. White, O. Lovejoy, B. Latimer, S. Simpson, and G. Suwa. 1999. Australopithecus garhi: A New Species of Early Hominid from Ethiopia. science 284: 629-635. Ashley, G.M. 2007. Orbital rhythms, monsoons, and playa lake response, Olduvai Basin, equatorial East Africa (ca. 1.85-1.74 Ma). geology 35: 1091-1094. Backwell, L.R., and F. d’Errico. 2001. Evidence of termite foraging by Swartkrans early hominids. Proceedings of the National Academy of sciences UsA 98: 1358-1363. Barham, L. 2002. Systematic pigment use in the middle Pleistocene of south-central Africa. Current Anthropology 43: 181-190. Barnosky, A.D. 2001. Distinguishing the effects of the Red Queen and Court Jester on Miocene mammal evolution in the northern Rocky Mountains. Journal of vertebrate Paleontology 21: 172-185. Behrensmeyer, A.K., N.E. Todd, R. Potts, and G. McBrinn. 1997. Late Pliocene faunal turnover in the Turkana Basin, Kenya and Ethiopia. science 278: 1589-1594. Berggren, W.A., D.V. Kent, C.C. Swisher III, and M.-P. Aubry. 1995. A Revised Cenozoic Geochro- nology and Chronostratigraphy. Pp. 129-212 in W.A. Berggren, D.V. Kent, C.C. Swisher, M. Aubry, and J. Hardenbol (eds.), geochronology, time scales and global stratigraphic Correla- tion., Special Publication SEPM No. 54. Tulsa, OK: Society for Sedimentary Geology. Bobe, R., and A.K. Behrensmeyer. 2004. The expansion of grassland ecosystems in Africa in relation to mammalian evolution and the origin of the genus Homo. Palaeogeography, Palaeoclimatol- ogy, Palaeoecology 207: 399-420. 93

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