Australopithecus aethiopicus, widely thought to be the ancestor of A. robustus and A. boisei, is considered to be the link between A. afarensis and A. boisei. The most well known of the few fossil finds of this species is the famous KNM-WT 1700, or Black Skull.nnSpecifications:nn1:1 scalenPolyurethane resin castnnSkull Length 22.2 cm (8.7 in.)nnSkull Width 15 cm (5.9 in.)nnSkull Height 10.5 cm (4.1 in.)nnStand Comes Complete With A Custom Cradle Designed Specifically For This SkullnnProduct of Bone Clones