Spinosaurus

This dinosaur might look a bit odd, but you wouldn't want to say that to its face - this late Cretaceous predator is even longer than Giganotosaurus.

Sail

The most striking feature of Spinosaurus is the huge sail on its back. This isn't for any kind of defensive purpose - a meat eater like this has little to fear - instead, it is used to regulate the dinosaur's temperature. Blood is pumped around the sail, where it is either heated in the sun or cooled in the shade; this, in turn, controls the temperature of Spinosaurus. Although sails are a relatively rare feature, they can be found on other dinosaurs and on reptiles, such as Dimetrodon, which were around even earlier than the dinosaurs.

fact fife

How to say it SP|WE.0_SORf

Mod La,e Cretaceous

Wwfcund Egypt, Morocco "eight 5 metres (i6.5 feet)

JJHJ metres (53 feet' Special features Large sail

Something fishy

The best place to spot Spinosaurus is along the water's edge since, like Baryonyx, Spinosaurus is a fish-eating dinosaur. The advantages of eating fish are obvious: because there are few dinosaurs with a taste for fish, Spinosaurus has therefore always had a big supply to hand. Of course, when it fancies a change, Spinosaurus will snap up anything else that comes within reach.

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