It's too soon to know whether A. sediba is a direct human ancestor, or just looks like one.

现在说sediba是人类直接的祖先，或只是像人类，还为时过早。

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Butchered bones found near site of 'Lucy', a probable human ancestor, who lived 3.2m years ago.

在“露西”的出土地附近，发现了有屠宰痕迹的骨头；“露西”是人类可能的祖先，生活在320万年以前。

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An anthropology professor from South Africa has successfully used Google Earth to find a new human ancestor.

在Google地球的帮助下，南非一名人类学教授成功地发现了一位人类先祖。

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That's how long it took for an international team of scientists to excavate and analyze the fossilized skeleton of a 4.4 million year old human ancestor, Ardipithecus ramidus, which was discovered in Ethiopia.

VOA: standard.2009.12.24

And on a larger excursion with friends to central Africa, which ended at some beach cottages on an island off Zanzibar, among their companions was anthropologist Donald Johanson, known for his work on the human ancestor Lucy, who helped teach them about human evolution.

CNN: In Search Of The Real Bill Gates

Recently, researchers found the missing link: the immediate ancestor of the Human Immunodeficiency Virus.

NPR: Origin of AIDS Linked to Colonial Practices in Africa

New fossil evidence seems to confirm that a key ancestor of ours could walk upright consistently - one of the major advances in human evolution.

BBC: Fossil find puts 'Lucy' story on firm footing