No other dinosaur had so tall neural spines as Spinosaurus, no one knows why, but theories are discussed diligently.
In 1912 the German paleontologist Ernst Stromer discovered many fossil bones and teeth during an Egyptian expedition. These fossils were from an unknown and unusualpredatory dinosaur, who had large spines on the back and had a long crocodile-like head. In 1915 he named the dinosaur Spinosaurus aegyptiacus, because of the long-spines of the vertebrae and the locality.
In April 1944, during World War II, RAF bombed Munich and all the unique fossil material was destroyed, luckily the fossils were relatively well-documented.
During 1980-90 and 2000 - many great discoveries were made in Algeria, Tunisia and Morocco. Reconstructions of recent findings shows that Spinosaurus now is the largest known theropod and predatory dinosaur, with lengths of 16-18 meters and weights of 7-9 tons. Spinosaurus findings are dated to the Cenomanian (the oldest part of the upper Cretaceous).