Sthenarosaurus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. Sthenarosaurus lived during the Unknown and resided in Europe.

All the Sthenarosaurus illustrations below were collected from the internet. Enjoy and explore:

Sthenarosaurus was described by the following scientific paper(s):
  • R. Owen. 1865. Part I. Sauropterygia. Monographs on the fossil Reptilia of the Liassic formations 17(75):1-40
  • R. Tate and J. F. Blake. 1876. The Yorkshire Lias