The ancient seas of the Late Cretaceous period would’ve been scary places to swim. Between 66 million and 100 million years ago, the world’s waterways were chock-full of real-life sea monsters. Not ...

Scientists have discovered a new species of mosasaur, a sea-dwelling lizard from the age of the dinosaurs, with strange, ridged teeth unlike those of any known reptile. Along with other recent finds ...

Scientists discover new species of mososaur or ancient lizard, Stelladens mysteriosus, from “screwdriver”-shaped teeth fossils, study said. Photo from Nicholas Longrich, Nour-Eddine Jalil, Xabier ...