Genus: Jormungandr ZIETLOW, BOYD & VAN VRANKEN, 2023
Etymology: Norse mythology, the sea serpent Jormungandr, also referred to as the "World Serpent," is the second child of god Loki and giantess Angrboda. The God Odinn is said to have thrown Jormungandr into the ocean, where he grew until he was large enough to encircle Earth by grasping his tail in his jaws. Jormungandr releasing his tail heralds the coming of Ragnarök, the death of the gods followed by destruction and rebirth of the world as it is submerged in water. We chose Jormungandr as the generic name due to the origin of Walhalla from Norse Valholl (Valhalla); Valholl is the great hall of Odin occupied by warriors slain in combat who rise again to participate in the battles catalyzed by Ragnarök.

Species: walhallaensis ZIETLOW, BOYD & VAN VRANKEN, 2023
Etymology: In reference to Walhalla, North Dakota.

Holotype: NDGS 10838

Locality: NDGS L47, Cavalier County, North Dakota.

Horizon: Pembina Member, Pierre Shale Formation.

Biostratigraphy:

Age: Middle Campanian Stage, Senonian subepoch, Gulf Epoch, Late Cretaceous.

Material: Nearly complete skull missing only the nasals, braincase, parietal, septomaxilla, and scleral ossicles, complete mandibles, 7 cervical vertebrae, 11 disarticulated ribs, and5 articulated anterior dorsal vertebrae, ribs, a scapula, and a coracoid.

Frontal modifed from ZIETLOW, BOYD & VAN VRANKEN, 2023.

Skull modified from ZIETLOW, BOYD & VAN VRANKEN, 2023. A) Dorsal, B), Lateral and C) Ventral views.