Thalassomedon was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. Thalassomedon lived during the Late Cretaceous and resided in North America. The first Thalassomedon fossil was discovered in 1943.
Quick facts about Thalassomedon:
- Existed from 99.6 million years ago to Turonian Age
- Lived in a marine environment
- Was a carnivore
- Reproduced by live birth
- 2 different specimens have been found by paleontologists
All the Thalassomedon illustrations below were collected from the internet. Enjoy and explore:
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Thalassomedon was described by the following scientific paper(s):
- S. P. Welles. 1943. Elasmosaurid plesiosaurs with description of new material from California and Colorado. Memoirs of the University of California 13:125-254
