A
cast of the extinct
hominid species
Sahelanthropus tchadensis holotype cranium, dubbed "Toumaï", in facio-lateral view. The original cranial fragment is dated to about 7 million years ago and was discovered in Chad. Other than Toumaï, the only
Sahelanthropus remains to be discovered are five pieces of jaw and some teeth.
Photo: Didier Descouens