Imagine swimming in the ocean and suddenly spotting a creature larger than any shark, faster than any human can sprint, and more vicious than any predator alive today. Meet the Mosasaurus, a marine ...

A mosasaur tooth discovered alongside a T. rex tooth and a freshwater crocodilian jaw in North Dakota raised new questions about the final days of the Western Interior Seaway. Stable isotope analysis ...

The aquatic reptile, a superpredator of the mosasaur family, inhabited the seas of what is now the northeast of the country ...

At the end of the Cretaceous Period, a type of giant reptile called mosasaurs occupied and dominated oceanic food webs. Mosasaurs had long bodies and were related to both snakes and monitor lizards.

The Hell Creek Mosasaur, reconstruction by Christopher DiPiazza. Please note that more images and a short video are available at this link: https://springernature-my ...