"North Dakota Fossil Unveils Clues to Evolutionary Enigma"

Paleontologists have discovered a new species of mosasaur, a massive marine reptile that lived about 80 million years ago, in North Dakota. The mosasaur, named Jormungandr walhallaensis after the Norse mythological sea serpent, is unique due to a mix of features in its skull that challenge classification. The fossil, which includes a near-complete skull, provides valuable anatomical details that will help scientists understand the evolutionary history of mosasaurs and their transition from land to sea. Further research and additional fossils may shed light on the relationship between Jormungandr walhallaensis and other mosasaur species.