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OH 8 is a nearly complete fossilzed hominin foot from Olduvai Gorge dating to approximately 1.8 Ma. Discovered by Mary Leakey's team in 1960, OH 8 was found in situ in the Middle of Bed 1 deposits, Level 3, at locality FLK NN. The foot is believed to come from on individual because all of the articular surfaces on each bone fit together and all of the elements assigned to the foot were found in one square foot of sediment. Controversy continues as to whether or foot represents an adult of juvenile, and whether the foot should be assigned to Homo habilis of another hominin species.
A fragmented cranium was found in situ by Kamoya Kimeu at Koobi Fora in 1973, identified as KNM ER 1813, dates to 1.9 Ma. First proposed as a possible relation to Australopithecus africanus, KNM ER 1813 is now recognized as an adult Homo habils. Debate continues, however, as to whether KNM ER 1813 represents a male or a female.
OH 7 is the holotype for the species Homo habilis, and was discovered on November 4, 1960 at Bet I at the FLK NN site in Olduvai Gorge, Tanzania. The specimen's nickname "Jonny's child" derives from the specimens discoverer, Jonathan Leakey, Mary and Louis Leakey's oldest son2. OH 7 consists of a cranial, dentition, and postcranial elements attributed to the same individual (based on similarity in size, lack of duplicate elements, and close proximity to each other at the time of discovery). The individual is believed to have been around 10-12 years of age at the time of death, and the skeletal remains show evidence of carnivore damage2.
