The Human Fetal Skull Anatomy Model is an anatomy model from G.D. Anatomical. The anatomy of a human fetal skull can be studied easily with this replica. The skull model is a natural cast of a fetal head in the 30th week of pregnancy showing the characteristics of prenatal development. The fontanelles, which become bone over time, are clearly visible on the fetal skull. Sutures will form along the bony plates helping fuse the fetal skull as the individual ages. Foetal skull on stand.