Leakey M G, Feibel C S, McDougall I, Walker A
National Museums of Kenya, Nairobi.
Nature. 1995 Aug 17;376(6541):565-71. doi: 10.1038/376565a0.
Nine hominid dental, cranial and postcranial specimens from Kanapoi, Kenya, and 12 specimens from Allia Bay, Kenya, are described here as a new species of Australopithecus dating from between about 3.9 million and 4.2 million years ago. The mosaic of primitive and derived features shows this species to be a possible ancestor to Australopithecus afarensis and suggests that Ardipithecus ramidus is a sister species to this and all later hominids. A tibia establishes that hominids were bipedal at least half a million years before the previous earliest evidence showed.
来自肯尼亚卡纳波伊的9件人类牙齿、颅骨和颅后骨骼标本，以及来自肯尼亚阿利亚湾的12件标本，在此被描述为一个新的南方古猿物种，可追溯到约390万至420万年前。原始特征和衍生特征的组合表明，这个物种可能是阿法南方古猿的祖先，并表明拉密达地猿是这个物种以及所有后来人类的姐妹物种。一根胫骨证实，人类两足行走的时间比之前最早的证据所显示的时间至少早了50万年。
