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| Parent: | Mosasaurinae [Taxonomy; edit]
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| Rank: | genus (displays as Genus)
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| Link: | †Jormungandr walhallaensis|Jormungandr(links to Jormungandr walhallaensis)
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| Extinct: | true
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| Always displayed: | yes (major rank) |
| Taxonomic references: | Zietlow, Amelia R.; Boyd, Clint A.; Van Vranken, Nathan E. (2023-10-30). "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). ISSN 0003-0090. |
| Parent's taxonomic references: | – |