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Regression of predicted versus actual age for eight fossil juveniles and 36 recent (living) humans. Predicted ages are derived from human radiographic calcification standards. Fossil H. sapiens are represented by Qafzeh 10 and Irhoud 3; Neanderthals are represented by Engis 2, Gibraltar 2, Krapina Maxilla B, Obi-Rakhmat 1, Scladina, and Le Moustier 1 (from left to right).
