Maxilla Dental cast of the Homo ergaster skull KNM-WT 15000, also known as "Nariokotome Boy" and "Turkana Boy"
Discovered in 1984 in Nariokotome, Kenya. The first fragment was found by K. Kimeu and the rest of the skeleton was excavated by R. Leakey, Walker and their team. It was first described by Brown, Harris, Leakey and Walker in Nature in 1985 as H. erectus. The completeness of this skull allowed scientists to determine an estimated cranial capacity of 880cm³, however this could have been as high as 909cm³ had Turkana boy reached adulthood. With approximately 40% of the skeleton recovered, anthropologists were able to gain a great deal of information regarding body size, limb proportions, and growth rates of Homo ergaster. Based on the pelvis and overall skeleton size, this individual was determined to be male. The lack of 3rd molar eruption and unfused post-cranial elements determined Turkana boy to about 11 to 12 years old at time of death.
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