Genus
Valid Extinct

Jormungandr

Zietlow et al. 2023

In Norse mythology, Jörmungandr, also known as the Midgard Serpent or World Serpent, is an unfathomably large and monstrous sea serpent or worm who dwells in the world sea, encircling the Earth (Midgard) and biting his own tail, an example of an ouroboros. As a result of him surrounding Midgard, the beast is referred to as the World Serpent. Jörmungandr releasing his tail is one of the signs of the beginning of Ragnarök.

Temporal range
Triassic
Jurassic
Cretaceous
Paleogene
Neogene
252 201 145 66 0 Ma
PBDB occurrences
1
Group
Mosasaures
Carnivore aquatic Terrestrial
Jormungandr
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Wikimedia
PBDB ↗ Wikipedia ↗
Classification
Mosasauridae Family
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Mosasaurinae Subfamily
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Jormungandr Genus
Fossil sites 1 geolocated sites
Distribution
Top countries
🇺🇸 United States
1
Geological formations
Pierre Shale
1
Temporal distribution
Campanian (83.6–72.2 Ma)
1
Species (1)
Jormungandr walhallaensis 84 Ma
Images 1
Bibliography
Original description
A. R. Zietlow, C. A. Boyd, and N. E. Van Vranken. 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 DOI ↗
Bibliography (1)
A. R. Zietlow, C. A. Boyd, and N. E. Van Vranken. 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 DOI ↗