For the first time scientists have learnt how the largest four-legged dinosaurs got from A to B.

The new research, published in Plos ONE, wanted to understand how one of the biggest animals to have lived on Earth, the Argentinosaurus, walked.

The Argentinosaurs, at 80 tonnes and 40m long was the equivalent of fifteen elephants, and scientists were unsure how such a big animal could even move.