A new species of mosasaur — Jormungandr walhallaensis — is unusual, displaying a mix of traits from other creatures of its kind. Challenging what’s known about these ancient giants, it could help solve an evolutionary mystery.
An enormous sea snake from Norse legend that was fathered by the trickster god Loki and grew big enough to circle the globe is now the namesake for a different type of “monster” — a newly discovered species of a massive, meat-eating marine reptile known as a mosasaur, which lived about 80 million years ago. Paleontologists recently described the previously unknown mosasaur from fossils found near the North Dakota town of Walhalla.
” Additional fossils of the newfound species could help fine-tune Jormungandr walhallaensis’ position on the mosasaur family tree, said Konishi, who studies mosasaur evolution and was not involved in the study. “Just how distinct J. walhallaensis is from Clidastes has yet to be investigated further,” Konishi told CNN in an email. “Future discoveries may favor an alternative hypothesis that it is a new species of Clidastes.
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