Extended Data Figure 3: Cross-sectional slices that illustrate the integrity of the left manus in MPC-D102/109.

a, Overview of MPC-D102/109 that indicates the location (red line) of the virtual sample for the slice shown in b. b, Dorsoventral cross-section of p2-I, p1-II and mc III; referred elements were stabilized close to their original position as indicated by the proximity of p2-I (grey arrow) to a small splint of p2-I that remained in the matrix (white arrow). Coloured lines indicate transects shown in c (blue), d (green) and e (purple). c, Mediolateral cross-section of manus with restored p2-I (grey arrow) indicated. d, Mediolateral cross-section of manus with in situ splint of p2-I (white arrow) indicated. e, Ventromedial–dorsolateral cross-section of manus with in situ splint of p2-I (white arrow) indicated. Scale bars, 20 mm. Sections in b–e were extracted from the dataset with an isotropic voxel size of 53.58 μm and volume reconstruction that followed a phase retrieval approach; b represents a single slice extracted from the digital volume and c–e were obtained through the thick-slab mode, with slab thickness set to 0.8 mm in ‘Maximum’ combine mode (VGStudio MAX 2.2.6, Volume Graphics).