 KNM ER 3733

KNM ER 3733 is a fossilized hominid cranium of the extinct hominid "Homo ergaster", alternatively referred to as African "Homo erectus".It was discovered in 1975 in Koobi Fora, Kenya, right next to Lake Turkana, in a survey led by Richard Leakey, by a field worker called Bernard Ngeneo.