"Scientists Uncover Gigantic New Mosasaur Species, Rewriting Evolutionary History"

Scientists have discovered a new species of mosasaur, a large aquatic lizard that lived during the late Cretaceous period. Named Jörmungandr walhallaensis after a sea serpent in Norse mythology, the fossil was found near Walhalla, North Dakota. This transitional species provides insights into the evolution and lineage of mosasaurs, filling a gap between primitive and advanced forms. With a length of approximately 24 feet, Jörmungandr had flippers, a shark-like tail, and distinctive features such as "angry eyebrows." The discovery sheds light on the geologic history of North America and the adaptations of these ancient marine creatures.