Spinosaurus is a enormous gray carnivorous dinosaur with a large sail on its back. In the Scribblenauts series, it inaccurately is smaller than in reality, and lacks the crocodile-like snout (although its snout is somewhat narrower than that of the other theropods in the game). Spinosaurus is aggressive and fairly powerful, capable of defeating most other theropods like Tyrannosaurus.
It is extremely inaccurate. It does not have a tail fluke, longer arms/shorter legs, a thick sail, crocodile-like head, and it lacks being semi-quadrupedal. For whatever reason, spinosaurus is not good at swimming.