Homo ergaster Nariokotome boy Discovered in 1984 by Richard Leaky (and described as H. erectus) this is the first skull dated before 100,000 years that is complete enough to get accurate measurements to determine brain size. Many other skeletal parts were also recovered, giving anthropologists a great deal of information regarding size, stature, age of death (probably 12 or 13 years) and whether or not language was possible. Some bones reveal a greater ability to run than modern humans, and some reveal a closer affinity to australopithecines. Size: 7 3/4"L, 5"W, 6"H Origin: Nariokotome, Kenya Age: 1.6 million years old

H. ergaster Discovered at the Koobi Fora, Upper Member, Area104, East Turkana, Kenya. Several teeth are intact, but no mandible was ever found. Also known as erectus, this skull is said to be very similar in appearance to the H. erectus finds of Peking, China. Size: 7 5/8"L, 5 1/4"W, 5 1/2"H Origin: East Turkana, Kenya Age: 1.6 million years old

Updated 01.10.2002

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