This deadly carnivore weighed several tonnes and could grow to be up to 17 metres long!
The Spinosaurus had multiple sharp, straight teeth in its crocodile-like mouth. Its meals mainly consisted of other dinosaurs or fish.
The intelligently designed sail on its back served several functions.
In cold-blooded dinosaurs, the sail probably contributed to vital temperature regulation by collecting or distributing heat.
It also served to impress potential mates.