Tag Archive for 'Pierre Shale Formation'

Reconstruction of Jormungandr walhallaensis shown engaging in intraspecific combat. Image credit: Henry Sharpe.

New Mosasaur Species Unearthed in North Dakota

Oct 31, 2023 by Enrico de Lazaro

A new genus and species of mosasaur being named Jormungandr walhallaensis has been discovered by American Museum of Natural History Ph.D. student Amelia...