Details

Autor(en) / Beteiligte

• Brunet, Michel
• Zollikofer, Christoph P. E
• Ponce de León, Marcia S
• Lieberman, Daniel E
• Guy, Franck
• Pilbeam, David
• Likius, Andossa
• Mackaye, Hassane T
• Vignaud, Patrick

Titel

Virtual cranial reconstruction of Sahelanthropus tchadensis

Ist Teil von

• Nature, 2005-04, Vol.434 (7034), p.755-759

Ort / Verlag

England: Nature Publishing Group

Erscheinungsjahr

2005

Link zum Volltext

Quelle

EBSCOhost Psychology and Behavioral Sciences Collection

Beschreibungen/Notizen

• Previous research in Chad at the Toros-Menalla 266 fossiliferous locality (about 7 million years old) uncovered a nearly complete cranium (TM 266-01-60-1), three mandibular fragments and several isolated teeth attributed to Sahelanthropus tchadensis . Of this material, the cranium is especially important for testing hypotheses about the systematics and behavioural characteristics of this species, but is partly distorted from fracturing, displacement and plastic deformation. Here we present a detailed virtual reconstruction of the TM 266 cranium that corrects these distortions. The reconstruction confirms that S. tchadensis is a hominid and is not more closely related to the African great apes. Analysis of the basicranium further indicates that S. tchadensis might have been an upright biped, suggesting that bipedalism was present in the earliest known hominids, and probably arose soon after the divergence of the chimpanzee and human lineages.