Homo Ergaster KNM ER 3733 Skull
Homo ergaster. 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 a adult female and dates back to 1.75 million years ago.
Skull Length: 18.5cm (7.2in)