Spinosaurus is First Known Semi-Aquatic Dinosaur

The meat-eating dinosaur Spinosaurus rose to terrifying fame in Jurassic Park III, when it took down the comparatively small Tyrannosaurus rex. Now, thanks to a newly discovered partial skeleton, Spinosaurus has an even greater claim to fame: this fearsome sail-backed beast spent much of its time in the water, a definitive first for dinosaurs.

Aquatic Hunter
A global team of paleontologists digitally reconstructed the skeleton of Spinosaurus aegyptiacus based on a new specimen from the

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