3 matic 4

Cranial parts, dentaries, and the composite cast of the cranium of WH-74 were scanned using computed tomography (CT) at the University of Michigan Department of Radiology (scanner GE HD-750). In-plane resolution was 0.879 mm, and slice thickness was 0.625 mm. Three-dimensional (3D) surfaces were extracted from image stacks using Amira 5.0 and post-processed in Materialise Magics 14. Slight taphonomic flattening of the right dentary was removed in Autodesk 3ds Max 2010 with reference to the undistorted left dentary and other specimens by bending the surface manually to allow for best-fit occlusal articulation of the upper and lower tooth rows. The dentaries were aligned with the cranium using Materialise 3-Matic 4.4, following the best possible dental occlusion.

The map in Figure 3 was made from three-dimensional data collected on site using a HandyScan HZ portable laser scanner at 0.63–0.88 mm resolution. Individual 50×50 cm squares were scanned, edited in Materialise Magics 14, and then stitched together in Materialise 3-Matic 4.4. Two-dimensional images were created from the modified three-dimensional data. Interpretation of track morphology was based on our in situ observations as well as images of three-dimensional data created with a controlled light source. The corresponding permits for field work in Quting area were issued by the Secretary of the Protection & Preservation Commission, Department of Culture of Lesotho.
Trackway measurements reported in Table S1 follow the standard protocols. Stride length is the distance between homologous points on successive prints of the same foot. Pace length is the distance between homologous points on the prints of the left and right manus or pes. The pace angle is formed by successive paces (i.e., R–L–R or L–R–L). Linear measurements were made to the nearest 0.5 centimeter and were measured in situ unless noted; angular measurements were made to the nearest 0.5 degree using the digital map of the trackway surface.