Tylosaurus rex rewrites the story of giant sea predators, not just for its size but for what its bones reveal about mosasaur ...

The newly described mosasaur Tylosaurus rex spanned up to 43 feet (13 meters) long and may have been one of the fiercest marine predators of the dinosaur age.

(CNN) — An enormous sea snake from Norse legend that was fathered by the trickster god Loki and grew big enough to circle the globe is now the namesake for a different type of “monster” — a newly ...

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 ...

Scientists have discovered a giant new species of mosasaur, a powerful marine reptile that ruled the oceans during the age of dinosaurs. The newly identified predator was so enormous and fearsome that ...

Long before humans existed, giant marine predators ruled the warm prehistoric seas that once covered much of North America. Among them was a newly identified species called Tylosaurus rex, a massive ...

Tylosaurus proligel, which had been housed for about 50 years at the Perot Museum of Natural Science in Dallas, Texas, has been found to have significant skeletal differences from other fossils of the ...

Add Yahoo as a preferred source to see more of our stories on Google. T. rex reconstruction. A reconstruction of Tylosaurus rex in the Cretaceous-era Western Interior Seaway of North America. (CREDIT: ...