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.

Shortly before a mass extinction ended the Age of Dinosaurs, a reptilian, barracuda-like carnivore with a mouth like a box cutter patrolled the warm seas that once covered swaths of what is now North ...

Mosasaurs, those large marine reptiles from the long-gone Cretaceous world, were quite picky in their choice of diet. Researchers came to this conclusion after studying the wear marks on mosasaur ...

The ancient seas of the Late Cretaceous period would’ve been scary places to swim. Between 66 million and 100 million years ago, the world’s waterways were chock-full of real-life sea monsters. Not ...

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 ...

Researchers are calling for CT scans to confirm the authenticity of a Cretaceous period fossil that led to the identification of a new mosasaur species. Reading time 3 minutes In 2021, scientists ...

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

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 ...

The cradle of palaeontology – the study of fossil remains of animals and plants – lies in the Maastricht limestones, where the first Mosasaurus was discovered in 1766. The Dutch-Belgian border area ...