Two jaw fragments from Globidens alabamaensis—a rare species of mosasaur with unique blunt teeth—have been discovered in ...

The rare bones of an ancient sea monster dating back 80 million years ... jaws belonging to Globidens alabamaensis, a 20-foot ...

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.

Other fossils found at the same site suggest the egg could have belonged to a giant marine reptile called a mosasaur, although it is unclear whether the egg was laid on land or at sea. The study ...

The Pembina Gorge offers everything from 80-million-year-old mosasaur bones to the beauty of steep valley cliffs towering over small, isolated prairies and pockets of wetlands.