Extended Data Fig. 5: Human lower second molar (F6-620).
From: Initial Upper Palaeolithic Homo sapiens from Bacho Kiro Cave, Bulgaria
a, Mesial, buccal and distal views of the crown, root and pulp chamber (left) and occlusal views of the enamel and dentine crown (right). b, A principal component analysis of the shape of the enamel–dentine junction ridge and cervix places the Bacho Kiro Cave second lower molar (F6-620) represented by a red star within the samples of recent (n = 8) and Pleistocene (n = 9) H. sapiens, and outside the distribution of Neanderthals (n = 20) and H. erectus (n = 3).
