According Prof. J. W. Rohena, M.D., Department of Anatomy, Univerity of Erlangen.
Model has 14 single items, which are simply removable and back pluggable thanks connector pins
Cavilla, occipital bone and pair of temporal bones create skull base, pair of parietal bones and frontal bone are attachable to front of the cavilla. Facial part of skull os complete after connection right and left upper jaw - each content lacrimal and nose bone and palatine bone.
Facial and cranial bones are joined together on each side of cheekbone, which which can be individually take off. Lower jaw is attached to the skull on each side of the roller joints.