Jormungandr
Jormungandr was a huge, swimming lizard that lived in the sea during the time of dinosaurs. It had a long body, strong jaws, and sharp teeth for catching fish and other sea creatures. This marine reptile was not a dinosaur, but a fierce predator of the ancient oceans.1
Cando viviu?
Como era de grande?
Canto medía de longo?
tan longo coma 7 cans do fociño á cola🍌tan longo coma 41 plátanos postos un tras outro🏊podería nadar o longo dunha piscina grande (50 m) en 4,9 segundosComo era de grande Jormungandr comparado CONTIGO?
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Que velocidade alcanzaba?
Datos curiosos
Jormungandr's skull was about 72 centimeters (28 inches) long, and its lower jaw measured 80.8 centimeters (31.8 inches).1
The fossil was discovered in 2015 by a fossil collector named Deborah Shepherd near Walhalla, North Dakota.1
Jormungandr lived about 80 million years ago, during the Late Cretaceous period.1
The fourth dorsal vertebra of Jormungandr has marks that scientists think are bite marks from another mosasaur, possibly from a fight or scavenging.1
Jormungandr shares features with both primitive mosasaurs like Clidastes and more advanced ones like Mosasaurus, making it a 'missing link' in mosasaur evolution.1
The species name walhallaensis comes from the town of Walhalla, which is named after Valhalla, the hall of slain warriors in Norse mythology.1

Cazamitos
Mito: Some people think Jormungandr was a dinosaur.
Verdade: Jormungandr was a mosasaur, a type of marine lizard, not a dinosaur. Mosasaurs are reptiles but belong to a different group than dinosaurs.1
Para expertos en dinos
- Nome científico
- Jormungandr
- Bautizado por
- Zietlow et al. 20232
- Grupo
- Mosasauros
- Familia / clado
- Mosasauridae2
- Clasificación
- Mosasauroidea2
- Idade das rochas
- de 84 a 72 millóns de anos (Campanian)2
- Formacións rochosas
- Pierre Shale2
- Países
- EUA2
- Rexistros fósiles
- 1 na Paleobiology Database2
- Descubrimento
- The only known fossil of Jormungandr was found in 2015 by fossil collector Deborah Shepherd near Walhalla, North Dakota. It was later described and named by paleontologists Amelia Zietlow, Clint Boyd, and Nathan Van Vranken in 2023.1
- Aínda en debate
- Scientists are not sure if Jormungandr is a distinct genus or just a new species of Clidastes. Some researchers think it might be renamed Clidastes walhallaensis in the future.1
De onde veñen os datos
- Jormungandr walhallaensis (en.wikipedia.org)
- Jormungandr in The Paleobiology Database (CC BY 4.0): idade, lugares, formacións rochosas, clasificación.
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