Extended Data Fig. 6: MALDI–TOF MS spectra for the six bone specimens identified as hominins through ZooMS analysis.
From: Initial Upper Palaeolithic Homo sapiens from Bacho Kiro Cave, Bulgaria
a, B4-1653 (interface of layers 6a and 7). b, AA7-738 (layer N1-I). c, BB7-240 (layer N1-I). d, CC7-2289 (layer N1-I). e, CC7-335 (layer N1-I). f, F6-597 (layer B).
