This specimen was cast from a real human fetal skull. Estimated to be 13 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 castnnSkull Length 2.5 cm (1 in.)nnSkull Width 1.9 cm (0.7 in.)nnSkull Height 1.9 cm (0.7 in.)nnProduct of Bone Clones