Dr Ibrahim, who unearthed parts of a Spinosaurus skeleton in North Africa's Sahara Desert in 2014, described it as having retracted nostrils, short hind legs, paddle-like feet and a fin-like tail.

For prehistoric scholars, Spinosaurus has been a very elusive dinosaur. Its fossils are rare, and those that are found (Spinosaurus skull bones, tail vertebrae, limb bones) tend to be fragmented or ...