Geologists have uncovered the fossil of a mosasaur, an ancient aquatic predator, in Mississippi. Often referred to as a “sea dragon” due to its imposing size and fearsome appearance, this prehistoric ...

Mosasaurs are extinct marine lizards, spectacular examples of which were first discovered in 1766 near Maastricht in the Netherlands, fueling the rise of the field of vertebrate palaeontology (the ...

Add Yahoo as a preferred source to see more of our stories on Google. Mosasaurs, extinct marine reptiles that dominated Earth's oceans during the Late Cretaceous period, have fascinated scientists ...

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 ...

Giant mosasaurs, once thought to be strictly ocean-dwelling predators, may have spent their final chapter prowling freshwater rivers alongside dinosaurs and crocodiles. A massive tooth found in North ...

There’s a newly crowned T. rex. This one, called Tylosaurus rex, was a tyrant of the sea and mosasaur spanning up to 43 feet ...

Equipped with powerful jaws and finely serrated teeth, paleontologists say the 43-foot-long prehistoric marine reptile deserves the name Tylosaurus rex. After remeasuring dozens of mosasaur specimens ...

Paleontologists have discovered a strange new species of marine lizard with dagger-like teeth that lived near the end of the age of dinosaurs. Their findings, published in Cretaceous Research, show a ...

The Texas fossils were noticeably different from similar specimens found in Kansas. They were larger, had serrated teeth and ...

As the saying goes, everything's bigger in Texas -- it just so happens that applies to ancient marine lizards, too. On Thursday, researchers at the American Museum of Natural History, the Perot Museum ...