Dictionary of Human Evolution and Biology

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Orrorin Tugenensis Senut, Pickford, Gommery, Main, Cheboi, And Coppens, 2001

Binomen for a composite fossil specimen found in October 2000 near the village of Rondinin in the Tugen Hills, Kenya, dated to about 5.88-5.72 mya (Lukeino Formation at Kapcheberek), containing hominoid remains including cranial and postcranial fragments from at least five individuals from which a composite was constructed. Orrorin means original man in the local dialect. Three partial femora suggest bipedalism while on the ground, but a humerus and phalanx suggest arboreal adaptations. Central incisors are large, the canine is large for a hominid, and the lower fourth premolar is ape-like. The molars are relatively small, with thick enamel. Aka Lukeino hominid, Millennium Man, and Millennium Ancestor.

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