Pachycostasaurus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. Pachycostasaurus lived during the Unknown and resided in Europe.
All the Pachycostasaurus illustrations below were collected from the internet. Enjoy and explore:
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Pachycostasaurus was described by the following scientific paper(s):
- D. M. Unwin. 1996. The fossil record of Middle Jurassic pterosaurs. In M. Morales (ed.), The Continental Jurassic, Museum of Northern Arizona Bulletin 60:291-304
