This Homo ergaster skull, designated as KNM-ER 3733, was discovered by B. Ngeneo in Koobi Fora, Kenya in 1975. It is a very complete example of an adult female and dates back to 1.75 million years ago.nnSpecifications:nn1:1 scalenPolyurethane resin castn1-part skull (cranium only)nnSkull Length 19.1 cm (7.5 in.)nSkull Width 13 cm (5.1 in.)nSkull Height 13.5 cm (5.3 in.)nnStand Comes Complete With A Custom Cradle Designed Specifically For This SkullnnOrigin: Kenya 1.8 – 1.5 myannProduct of Bone ClonesnPlease be advised that this product is made to order and will require additional lead time. For further information about the availability and turnaround time of this item, please contact our customer service team at 1-800-659-SKULL.