Whatever you want to call the Mosasaurus hoffmannii—a giant mosasaur, a massive water dragon, maybe even a sea monster—just know that it was one big dino, and we’ve got the bones to prove it ...

Mosasaur Reproduction Mystery. Until now, the general belief among paleontologists was that mosasaurs gave birth to live young, similar to modern-day sea snakes and some sharks.Unlike marine ...

The mosasaurus genus was a completely marine reptile, closely related to Komodo dragons of today, that would have lived between 90 million and 60 million years ago. It would grow to lengths of ...

That’s when she spotted the bones of a mosasaur, described as a “giant marine lizard that swam in the prehistoric seas at the same time ... Mosasaurs lived in the Badlands region roughly 75 to ...

That’s when she spotted the bones of a mosasaur, described as a “giant marine lizard that swam in the prehistoric seas at the same time ... Mosasaurs lived in the Badlands region roughly 75 to ...

That’s when she spotted the bones of a mosasaur, described as a “giant marine lizard that swam in the prehistoric seas at the same time ... Mosasaurs lived in the Badlands region roughly 75 to ...