From the depths of a Mississippi riverbed, scientists unearthed a giant vertebra that may belong to the largest mosasaur ever ...

There are giant squid in Kansas. They are not pickled museum specimens rescued from a Newfoundland beach, nor, b-movie schlock like Eye of the Beast aside, are they monsters that found their way into ...

Fossils of a giant killer mosasaur have been discovered, along with the fossilized remains of its prey. At the end of the Cretaceous period, 66 million years ago, sea monsters really existed. While ...

A giant mosasaur from the end of the Cretaceous period in Morocco that could have reached up to eight meters long is the third new species to be described from the region in less than a year, bringing ...

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 ...