a, The template with landmarks (red), non-osteometric homologous landmarks (blue), curve semilandmarks (light blue) and surface semilandmarks (yellow) was digitized on the MRD cranium. b, The template configuration with names of landmarks and curves numbers (Supplementary Note 2). c, Basal view of the template digitized on the MRD cranium. d, The template digitized on the mirrored cranium. e, Symmetric configuration of the (semi)landmarks and warped surface. f, Basal view of the final result for MRD-sym. g, Basal view of the left zygomatic process, the right mastoid process and other parts of the basicranium reconstructed by mirroring the original counterparts (integrated parts are shown in green). h, Basal view, final result after integrating the mirrored counterparts. Scale bars, 2 cm. See Methods for details.