Authors: Tim D White; Giday WoldeGabriel; Berhane Asfaw; Stan Ambrose; Yonas Beyene; Raymond L Bernor; Jean-Renaud Boisserie; Brian Currie; Henry Gilbert; Yohannes Haile-Selassie; William K Hart; Leslea J Hlusko; F Clark Howell; Reiko T Kono; Thomas Lehmann; Antoine Louchart; C Owen Lovejoy; Paul R Renne; Haruo Saegusa; Elisabeth S Vrba; Hank Wesselman; Gen Suwa Journal: Nature Date: 2006-04-13 Impact factor: 49.962