Homo ergaster, also known as the “working man” is an extinct species or subspecies of archaic humans that lived in Africa during the Early Pleistocene. The majority of Homo ergaster fossils have been discovered along the shores of Lake Turkana in Kenya including the holotype KNM-ER 992 and the famous Turkana Boy (KNM-WT 15000), which is a nearly complete skeleton [1][2]. Other African sites include the North African sites of Tighenif (formerly Ternifine and sometimes assigned to Homo mauritanicus) in Algeria and Thomas Quarries and Sidi Abderrahman in Morocco; the East African sites of Konso Gardula and Omo in Ethiopia, Olorgesaillie in Kenya, and Olduvai Gorge in Tanzania; and possibly Swartkrans in South Africa, although it is not universally accepted that Homo ergaster was present [3].

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Natural history of Homo erectus

Gignos Citations