Get ready for a subaquatic smackdown! It’s Megalodon VS Mosasaurus. One underwater arena. Two apex predators enter. One leaves. Both of these deep-sea divas reigned supreme in their time. But now, ...

From the depths of a Mississippi riverbed, scientists unearthed a giant vertebra that may belong to the largest mosasaur ever discovered in the state. This predator, Mosasaurus hoffmanni, was the last ...

This supplied photo shows an image rendering of a mosasaur, a large marine reptile that lived between 80 million and 65 million years ago. (Copyright Satoshi Kawasaki ...

A team of Japanese scientists, publishing their findings in Science, have turned their attention to an octopus fossil from the Cretaceous period. Judging by the evidence, this sea monster—a 62-foot ...

Not to be confused with the iconic theropod dinosaur Tyrannosaurus rex, Tylosaurus rex is a marine reptile that belongs to a large-bodied group known as mosasaurs. These aquatic predators belong to ...

Tylosaurus stretched past 13 metres in the Late Cretaceous seas, longer than two great white sharks nose to tail, with backward-pointing palatal teeth that turned its throat into a one-way ratchet. A ...