It looked like a dinosaur, had a mouthful of sharp teeth and stretched as long as some compact cars. But when the extinct marine reptile called Meyerasaurus swam, it had a stroke like something much ...

Sign up for CNN’s Wonder Theory science newsletter. Explore the universe with news on fascinating discoveries, scientific advancements and more. A groundbreaking ...

It's long been thought that dinosaurs were land lubbers -- terrestrial creatures that steered largely clear of water. A groundbreaking discovery in 2014 of a Spinosaurus with features that pointed to ...

A new dinosaur species discovered in Mongolia is being called the first prehistoric meat-eater ever found with two legs and a streamlined body adapted for diving and hunting underwater.

It's long been thought that dinosaurs were land lubbers -- terrestrial creatures that steered largely clear of water. A groundbreaking discovery in 2014 of a Spinosaurus with features that pointed to ...

Spinosaurus is the biggest carnivorous dinosaur ever discovered—even bigger than T. rex—but the way it hunted has been a subject of debate for decades. It’s hard to guess the behavior of an animal ...

Researchers have discovered that Spinosaurus aegyptiacus, the terrifying aquatic dinosaur that lived 100 million years ago, had a powerful tail that enabled it to be accustomed to an aquatic lifestyle ...

It’s long been thought that dinosaurs were land lubbers — terrestrial creatures that steered largely clear of water. A groundbreaking discovery in 2014 of a Spinosaurus with features that pointed to ...

This archived news story is available only for your personal, non-commercial use. Information in the story may be outdated or superseded by additional information. Reading or replaying the story in ...

Breakthroughs, discoveries, and DIY tips sent every weekday. Terms of Service and Privacy Policy. More than 90 million years ago, a dinosaur similar in size to T. rex ...

The duck-size animal’s body was streamlined for pursuing prey underwater, researchers say. Other paleontologists say more work is needed to confirm the finding. By Kate Golembiewski Birds, the only ...