1.9 MYA. The Homo habilis Skull KNM-ER 1813 was discovered by K. Kimeu in 1973 at Koobi Fora, Kenya, and described by R. Leakey in Nature in 1973.nnSpecifications:nn1:1 scalenPolyurethane resin castn2-part skull (separate cranium & jaw)nnSkull Length 17.6 cm (6.9 in.)nSkull Width 11.7 cm (4.6 in.)nSkull Height 13 cm (5.1 in.)nnOrigin: Koobi Fora, Lake Turkana, Kenya 2.3 – 1.6 myannProduct of Bone Clones