Dating and Context of Three Middle Stone Age Sites with Bone Points in the Upper Semliki Valley, Zaire
A.S. Brooks, D.M. Helgren, J.S. Cramer, A. Franklin, W. Hornyak, J.M. Keating, R.G. Klein, W.J. Rink, H. Schwarcz, J.N.L. Smith, K. Stewart, N.E. Todd, J. Verniers, J.E. Yellen 1995 Science v268 p548-553
Relics found at three sites in eastern Zaire are greater than 90,000 years old and are typical of those associated with anthropologically modern humans. The layers containing the artifacts were dated using stratigraphy, thermoluminescence, optically stimulated luminescence, electron-spin resonance, uranium-series, and amino-acid racemization.