Mosasaurs were real. They lived between 145.4 million and 65.5 million years ago -- during the time of the dinosaurs -- and apparently were of massive size. But the animal is also turning researchers' ...

They weren’t in the delivery room, but researchers at Yale University and the University of Toronto have discovered a new birth story for a gigantic marine lizard that once roamed the oceans. Thanks ...

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 ...

Mosasaurs were true sea monsters of late Cretaceous seas. These marine lizards -- related to modern snakes and monitor lizards -- grew as long as fifty feet, flashed two rows of sharp teeth, and ...

As if the seas of the late Cretaceous era didn’t already have enough enormous predators, new research indicates they also ...

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 ...

Giant reptiles, masters of the oceans more than 66 million years ago, swimming in rivers? A recent discovery in North America raises this surprising hypothesis and changes our perception of mosasaurs.

The skull of Mosasaurus hoffmani. From Lingham-Soliar 1995. On my first trip to the Inversand marl pit in Sewell, New Jersey, I didn't find the wonderfully preserved Dryptosaurus skeleton I had been ...

Some 80 million years ago, the late Cretaceous oceans were patrolled by 17-meter mosasaurs, long-necked plesiosaurs, and ...

A fossilized ancient egg discovered in Antarctica nearly a decade ago has finally been identified, shedding new light on ...

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 ...