Some paleontologists think that fossils recovered from Antarctica are evidence of birds similar to modern geese and ducks ...

The fossilized remains of a huge sea monster known as a mosasaur were recently discovered in Texas. The land of what is now Texas was submerged underwater around 80 million years ago.

With serpentine necks, flippers and a mouth full of needle-sharp teeth, plesiosaurs have captured imaginations since palaeontologists uncovered ...

This 72-million-year-old mosasaur fossil once believed to be a new species, was recently determined in a new study to potentially be a forgery. Scientists are asking for more high-tech CT scans to ...

These sea monsters grew upwards of 40 feet (12 meters ... such as the sharp-toothed shark Cretoxyrhina and the giant mosasaur Tylosaurus. Like all plesiosaurs, Styxosaurus's limbs were two ...

similar to a sea turtle or humpback whale. The shape of the spine also indicates that the species may have had a dolphin-like dorsal fin, a first for mosasaurs. Since 2010, the Wakayama ...

The short-necked plesiosaur likely had few enemies, but those that attacked were some of the fiercest monsters of the seas, including sharks with razor-sharp teeth and the giant mosasaur Tylosaurus.