Animation 1: Quicktime movie of consecutive high-resolution X-ray CT slices of the Archaeoraptor slab, as it was present for scanning on July 28, 1999. This is the original CT slice plane. The imagery is depicted in shades of gray, to resemble conventional X-radiograms. The densest materials in the slab, which are bone and metallic inclusions in the grout, are depicted in white pixels; air is depicted in black. An approximately linear scale links pixel value with relative density.