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They went extinct at the same time as the dinosaurs. “Do I necessarily agree that it’s a new genus and species?” Dr. Caldwell said. But those are sort of the scientific quibbles, right?”It’s more likely, Dr. Caldwell said, that the fossil described in the study is simply a new species of the clidastes genus. Under this view, it would take the name Clidastes walhallaensis. Still, the paper adds “extremely valuable” data for future research to consider as the field develops what is still a fledgling understanding of the evolution of mosasaurs, Dr. Caldwell said.
Persons: Amelia Zietlow, Richard Gilder, Jormungandr, Zietlow, Dr, Caldwell, walhallaensis Organizations: Richard, Richard Gilder Graduate School, American Museum of Locations: clidastes
Paleontologists recently described the previously unknown mosasaur from fossils found near the North Dakota town of Walhalla. The town’s name comes from Valhalla, the feasting hall of Norse mythology where dead heroes gather, so the scientists dubbed the mosasaur Jormungandr walhallaensis. When the scientists examined the skull, they quickly realized they had something unusual on their hands. This combination of traits convinced the researchers that what they were looking at was a new genus and species. Here is a line drawing of the skull of the Jormungandr walhallaensis.
Persons: Amelia Zietlow, Richard Gilder, Jormungandr, Zietlow, “ He’s, ” Zietlow, Henry Sharpe, Takuya Konishi, Jormungandr walhallaensis, , it’s, Konishi, walhallaensis, ” Konishi, Clint Boyd, , ” Mindy Weisberger Organizations: CNN, American Museum of, American Museum, Natural, Richard Gilder Graduate, North, North Dakota Geological Survey, American, of, University of Cincinnati, Scientific Locations: North Dakota, Walhalla, Valhalla, New York City, Clidastes, United States
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