Orrorin tugenensis

Orrorin tugenensis is the type species of Orrorin, an extinct great ape of the tribe Hominini from the Lukeino Formation of Kenya, in the Miocene. It was named and described in 2001 by Senut and colleagues from 20 fossils found at four sites in the Tugen Hills starting in October 2000, the oldest at Cheboit and Aragai being about 6.1 million years old. The first part of the holotype, a lower molar, had been found by Martin Pickford in 1974. The fossils are thought to come from at least five individuals. The genus name means original man in the Tugen language, and the species name refers to the Tugen Hills where the first fossil was found.