The skull consists of the following 21 pieces:
The two parietals, the occipital, the two temporal, the sphenoid, the frontal, the maxillary, the zygomats, the right palatine, the ethmoid, the vomer, the own bones of the nose, the cornets, the mandible. The left maxillary and left palatal are cast together for a better understanding of the mechanics of the palate. It is impossible to make the transparency of the internal volumes of the ethmoid. The outer contours are fully respected, but this bone appears full. It fits perfectly between the jaws and the frontal.