Sixty-six million years ago, the Cretaceous period ended. Dinosaurs disappeared, along with around 90% of all species on Earth. The patterns and causes of this extinction have been debated since ...

A recent scientific discovery claims that giant sea lizards with “angry eyebrows” roamed the waters over what has become North Dakota more than 80 million years ago. The new species has been dubbed ...

A reconstruction of two Jǫrmungandr walhallaensis mosasaurs fighting. The sea lizards with "angry eyebrows" swam in ancient North Dakota and were named after a Norse sea creature and Walhalla where ...

The Mesozoic wasn’t just the age of dinosaurs. Reptiles of all sorts thrived through the Triassic, Jurassic and Cretaceous at the same time our favorite dinosaurs were roaming on land. Long-necked ...

A gigantic sea monster from the era of the dinosaurs has been discovered and named after a Norse snake. The 24-foot-long creature is a new species of mosasaur—aquatic, carnivorous lizards that lived ...

Scientists have discovered the fossils of a new prehistoric species in Morocco — a bizarre-looking marine lizard considerably larger than a great white shark, which, they say, dominated the seas while ...

Researchers have revealed a previously unknown species of "giant sea lizard" with a fearsome set of "dagger-like" teeth that lived during the age of the dinosaurs. The new species, described in a ...

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 ...

A single vertebra dug out of a boulder in a stream below a mountain in New Zealand in 1978 has now been found to have belonged to the oldest known sea reptile in the Southern Hemisphere, where no ...

CHARLESTON, S.C. (WCBD) – A College of Charleston student found the skeleton of a large sea lizard, and the condition of the fossil is considered to be “extraordinary.” In May, rising senior and ...

The creatures cruised the world’s oceans with features we often associate with marine mammals, such as coats of blubber and the ability to birth live young Riley Black - Science Correspondent Fossils ...