
Roughly 2.6 million-year-old fossilized teeth found in Ethiopia might belong to a previously unknown early human relative, researchers say.
The teeth are from a species of Australopithecus, the genus that includes Lucy (A. afarensis). But these newly discovered teeth don't appear to belong to any known species of Australopithecus, according to a new study published in the journal Nature on Wednesday (Aug. 13).