The discovery of a set of 9.7-million-year-old teeth has led archaeologists to raise questions about the commonly believed 'out-of-Africa' theory of human origins.

The teeth, which were discovered in a former bed of the Rhine river, don't resemble those of any other human species found in Europe or Asia.

The find suggests that contrary to popular belief, Europe may be the cradle of humanity.

The researchers claim they were so baffled by the findings, that it has taken them a year to announce the discovery.

The teeth are currently being examined in detail by a team of scientists and the first paper to report on the finding will be published next week.

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