Spinosaurus, the largest known predatory dinosaur, now has another claim to fame - new fossils reveal it had adaptations to life in the water, which have never been seen in a dinosaur before.

Spinosaurus has changed dramatically since I was a kid. The model I used to terrorize my other toys with looked like an overgrown Allosaurus with a giant sail on its back. As paleontologists ...

Spinosaurus was larger than both T. rex and Giganotosaurus, which was previously the largest carnivorous dinosaur known. But it's unclear just how big Spinosaurus was, due to incomplete fossils.

Did Spinosaurus, the largest-known carnivorous dinosaur, wade into rivers and lakes like a heron? Or did they swim underwater like a hippo or croc? It turns out that the answer was in their bones.

Spinosaurus' hind limbs were unusually small for a dinosaur — in fact, they were more like a duck's webbed feet. The long bones were particularly dense, more like a penguin's bones. Its long ...