File:Anatomically Modern Humans archaeological remains, Europe and Africa, directly dated, calibrated carbon dates as of 2013.jpg

English: Anatomically Modern Humans archaeological remains, Europe and Africa, directly dated, calibrated carbon dates as of 2013
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Figure 3. Comparison of the modelled ages (Probability Distribution Function; PDF) obtained for Egbert and Ethelruda with age estimates of AMH from other Palaeolithic sites between 50,000–30,000 years ago. The PDFs for the Ksar Akil fossils (Model 1 in green, Model 2 in black), as derived from the Bayesian modelling (Text S1 (SI Section III), Figs. S4–5), are plotted against the currently available determinations for AMH from Europe and Africa [9], [10]. The likelihoods for the directly-dated specimens are shown in dark grey, whereas the PDFs for those dated indirectly, in light blue. Egbert is contemporaneous with the oldest directly-dated European modern human (Peştera cu Oase, [54]) and falls within the earlier part of the ranges for both Nazlet Khater and Hofmeyer, the African AMH; these dates, however, are very imprecise. The Peştera cu Oase date is a mean of two determinations, one ultrafiltered and one not. The age estimate for Ethelruda is broadly similar to that for the AMH maxilla from Kent's Cavern, but not older than the AMH teeth from Cavallo in Italy. The radiocarbon determinations were calibrated with the INTCAL09/ Marine09 curve [50] and the modelling was performed using OxCal v.4.1.7 [51].

The top graph (cf. figure 2) shows climate reconstruction based on the NGRIP δ¹⁸O, the numbers reference the Greenland Interstadials, c.f. File:Ice-core-isotope.png, Dansgaard–Oeschger event