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 Spinosaurus  Spinosaurus was a theropod dinosaur from Middle Cretaceous Africa. It was the largest theropod dinosaur ever to live. It appeared on the first episode of Planet Dinosaur.

Spinosaurus hunted giant fish like Onchopristis in rivers and streams. It usually came into combat with other predators like Carcharodontosaurus when it was hunting on land. It is currently considered to be the largest carnivorous dinosaur. In the episode Lost World, it is the main creature of the episode, and also one of the largest, weighing in at 3-3.5 tons, measuring in at 53 feet long and standing 20 feet tall including the sail. But, excluding the sail, it stood 17 feet tall.

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