Distant DNA links have been discovered between Aboriginal Australians and tribes living deep within the Amazon rainforest.

Researchers in the US and Denmark have established that people sharing DNA links with Aboriginal people crossed the Bering land bridge between Siberia and the Americas thousands of years ago.

Ancient links: A Brazilian Indian child from the Surui nation. Credit:PAULO WHITAKER

The revelations, published in Nature and Science Magazine, are the strongest signs yet that there could have been multiple migrations from Siberia to the Americas tens of thousands of years ago.

The findings have captivated the international science community, with Jennifer Raff, an anthropological geneticist at the University of Texas, telling Nature on Tuesday they were, "honestly one of the most exciting results we've seen in a while."