1. Institute of Paleobiology, National Museum of Georgia, Tbilisi 380007, Georgia.
2. Department of Anthropology, Peabody Museum, Harvard University, Cambridge, MA 02138, USA.
3. Institute of Archaeology, Hebrew University, Jerusalem 91905, Israel.
4. Radiocarbon Dating and Cosmogenic Isotopes Laboratory, Kimmel Center for Archaeological Science, Weizmann Institute of Science, Rehovot 76100, Israel, and Department of Land of Israel Studies and Archaeology, Bar-Ilan University, Ramat Gan 59100, Israel.
5. Georgian State Museum, Department of Prehistory, Tbilisi 380105, Georgia.