The last Homo heidelbergensis and their descendants the Neandertals: Orgnac 3, Lazaret and Zafarraya dating

This article presents the dating results recently obtained on three archaeological sites in Europe. At Orgnac 3 (Ardeche, France) from where the last Homo heidelbergensis fossils are associated with the first evidence of levallois technique, two speleothem formations from the 5b-6-7(th) layers were U-Th dated with MC-ICPMS, giving an age range of 319-255 ka (2 sigma) (MIS 8-9), while the volcanic ash-bearing second layer was dated by 40Ar/39Ar, obtaining a preliminary date of 308.2 +/- 6.8 ka (2 sigma). The combined ESR/U-Th dating of red deer enamel teeth from Lazaret cave (Alpes-Maritimes, France) attributed ages of 120-190 ka to the Acheulean and pre-Mousterian layers (MIS6), which is in agreement with previous TIMS U-Th dates between 108 and 44 ka on calcite samples from the overlying TRA trench (MIS 5, 4,3). At Zafarraya (Andalousie, Espagne), a number of C-14 measurements on charcoal samples as well as combined ESR/U-Th dates on Capra and Equus dental enamels assigned the Mousterian artefacts and neandertalian fossils-bearing deposits an age interval between 42 and 34 ka (MIS 3). (C) 2011 Academie des sciences. Published by Elsevier Masson SAS. All rights reserved.