R. J. Clarke and K. Kuman. The skull of {StW} 573, a 3.67 Ma Australopithecus prometheus skeleton from Sterkfontein Caves, South Africa. Journal of Human Evolution, Elsevier BV, volume 134, pages 102634, September 2019. K. Kuman, M. Inbar, and R. J. Clarke. Palaeoenvironments and Cultural Sequence of the Florisbad Middle Stone Age Hominid Site, South Africa. J. Archaeol. Sci., volume 26, issue 12, pages 1409-1426, 1999.