Extended Data Fig. 2: Basic steps involved in repositioning and reconstructing the MRD face.
From: A 3.8-million-year-old hominin cranium from Woranso-Mille, Ethiopia
a, Midsagittal planes computed for the original neurocranium (ivory) and facial portion (red). b, The original facial portion is rotated to align the midsagittal plane of the face with the midsagittal plane of the neurocranium, then the former is moved along the midsagittal plane to establish contact with the latter. c, The left supra-orbital bone was mirrored and aligned to the original MRD right side. d, The complete right side was mirrored and aligned to the left side. e, f, Anterior (e) and inferior (f) views of the original left maxillary dental arcade and part of the palate superimposed to the mirrored copy of the right hemiface. g, h, Frontal (g) and basal (h) view of the right dental arcade reconstructed by mirroring the left dental arcade (except for the right M3). Mirrored portions are shown in green. Scale bar, 4 cm. See Methods for details.
