This specimen was cast from a real human fetal skull. Estimated to be 20 weeks old, this skull exhibits characteristics of prenatal development. This specimen is an excellent aide when studying human fetal osteological development.nnSpecifications:nn1:1 scalenPolyurethane resin castn1-part skull (jaw glued to cranium)nnSkull Length 4.7 cm (1.9 in.)nnSkull Width 3.5 cm (1.4 in.)nnSkull Height 3.8 cm (1.5 in.)nnProduct of Bone Clones