Zietlow, A. R.; Boyd, C. A.; Van Vranken, N. E. (2023). Jormungandr walhallaensis: A New Mosasaurine (Squamata: Mosasauroidea) from the Pierre Shale Formation (Pembina Member: Middle Campanian) of North Dakota. Bulletin of the American Museum of Natural History. 464: 1-82.
Jormungandr walhallaensis: A New Mosasaurine (Squamata: Mosasauroidea) from the Pierre Shale Formation (Pembina Member: Middle Campanian) of North Dakota
Bulletin of the American Museum of Natural History