Project 4529: A. R. Zietlow, C. A. Boyd, N. E. Van Vranken. 2023. Jormungandr walhallaensis: a new mosasaurine (Squamata: Mosasauroidea) from the Pierre Formation (Pembina Member: Campanian) of North Dakota. Bulletin of the American Museum of Natural History. 464:1-82.