B464 (2023) Jormungandr walhallaensis : A New Mosasaurine from the Pierre Shale Formation
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B464 (2023) 82 pp. Amelia R. Zietlow, Clint A. Boyd and Nathan E. Van Vranken. Jormungandr walhallaensis : a new mosasaurine (Squamata: Mosasauroidea) from the Pierre Shale Formation (Pembina Member: Middle Campanian) of North Dakota.
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