Eretmosaurus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. The first Eretmosaurus fossil was discovered in 1874.
All the Eretmosaurus illustrations below were collected from the internet. Enjoy and explore:
- R. Owen. 1840. Report on British fossil reptiles. Report of the British Association for the Advancement of Science 8:43-126