Jormungandr walhallaensis

Jormungandr
Temporal range: Late Cretaceous (Campanian),
Life restoration of Jormungandr
Scientific classification
Domain: Eukaryota
Kingdom: Animalia
Phylum: Chordata
Class: Reptilia
Order: Squamata
Clade: †Mosasauria
Superfamily: †Mosasauroidea
Family: †Mosasauridae
Subfamily: †Mosasaurinae
Genus: †Jormungandr
Species:
†J. walhallaensis
Binomial name
†Jormungandr walhallaensis
Zietlow, Boyd & van Vranken 2023
This article is about the genus of mosasaur. For the sea serpent in Norse mythology, see Jörmungandr. For the genus of extinct recumbirostran, see Joermungandr bolti.

Jormungandr is an extinct genus of mosasaurid squamates from the early Campanian Pierre Shale of North Dakota, United States. The genus contains a single species, J. walhallaensis, known from a nearly-complete skull and partial skeleton. Jormungandr was a medium-sized mosasaur, at around 6–8 metres (20–26 ft) long, and its skeletal anatomy exhibits a mix of features seen in both basal and derived mosasaurines.

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