Sahelanthropus tchadensis is an extinct hominid species that is dated to about 7 ẹgbẹgbẹ̀rún ọdún sẹ́yìn. Whether it can be regarded as part of the Hominina tree is unclear; there are arguments both supporting and rejecting it. Another complication in its classification is that it is older than the human-chimpanzee divergence (estimated to 6.3 to 5.4 ẹgbẹgbẹ̀rún ọdún sẹ́yìn) seen in genetic data,[2] and that there are few if any specimens other than the partial cranium known as Toumaï.

Sahelanthropus tchadensis
"Toumaï"
Temporal range: Late Miocene
Cast of a Sahelanthropus tchadensis skull (Toumai)
Ìṣètò onísáyẹ́nsì
Ìjọba:
Ará:
Ẹgbẹ́:
Ìtò:
Ìdílé:
Subfamily:
Ẹ̀yà:
Subtribe:
Ìbátan:
Sahelanthropus

Brunet et al., 2002[1]
Irú:
S. tchadensis
Ìfúnlórúkọ méjì
Sahelanthropus tchadensis
Brunet et al., 2002



  1. Usually, all authors of a taxon description are cited. In this case they are so many however that for layout reasons the list is abbreviated. The full citation is:
    Brunet, Guy, Pilbeam, Mackaye, Likius, Ahounta, Beauvilain, Blondel, Bocherens, Boisserie, De Bonis, Coppens, Dejax, Denys, Duringer, Eisenmann, Fanone, Fronty, Geraads, Lehmann, Lihoreau, Louchart, Mahamat, Merceron, Mouchelin, Otero, Pelaez Campomanes, Ponce de León, Rage, Sapanet, Schuster, Sudre, Tassy, Valentin, Vignaud, Viriot, Zazzo, & Zollikofer, 2002.
  2. "Evolution's human and chimp twist". BBC. May 18, 2006. http://news.bbc.co.uk/2/hi/science/nature/4991470.stm. Retrieved April 2010.