Edgarosaurus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs.
All these Edgarosaurus pictures were collected from the internet. Enjoy and explore:
- P. S. Druckenmiller. 2002. Osteology of a new plesiosaur from the Lower Cretaceous (Albian) Thermopolis Shale of Montana. Journal of Vertebrate Paleontology 22(1):29-42