アメリカ自然史博物館さんのインスタグラム写真 - (アメリカ自然史博物館Instagram)「🚨 Research alert! Imagine putting flippers on a 24-foot Komodo dragon. That’s how Amelia Zietlow, a Ph.D. student at the Museum’s Richard Gilder Graduate School, describes Jormungandr walhallaensis, a newly identified species of mosasaur that was named in part after a sea serpent in Norse mythology. Scientists think this species, which lived some 80 million years ago during the Cretaceous, represents a transitional period between other well-known mosasaurs. The fossil on which the study is based was discovered in 2015, when researchers excavating in the northeastern part of North Dakota found an impressive specimen: a nearly complete skull, jaws, and cervical spine, as well as a number of vertebrae. To learn more, visit the link in our bio! Image: A reconstruction of two Jormungandr walhallaensis mosasaurs fighting / © Henry Sharpe #paleontology #science #stem #didyouknow #paleoart #dinosaurs #mosasaur」10月31日 2時10分