Cryptoclidus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. Cryptoclidus lived during the Mid Jurassic. The first Cryptoclidus fossil was discovered in 1871.

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

Cryptoclidus was described by the following scientific paper(s):
  • D. Martill. 1984. The occurrence of a dinosaurian phalanx in the Lower Oxford Clay of Peterborough, Cambridge. Mercian Geologist 9(4):209-211
  • H.-E. Sauvage. 1874. Mémoire sur les dinosauriens et les crocodiliens des terrains jurassiques de Boulogne-sur-Mer [Memoir on the dinosaurs and crocodilians of the Jurassic deposits of Boulogne-sur-mer]. Mémoires de la Société Géologique de France, série 2 10(2):1-57
  • D. S. Brown. 1981. The English Upper Jurassic Plesiosauroidea (Reptilia) and a review of the phylogeny and classification of the Plesiosauria. Bulletin of the British Museum (Natural History) 35(4):253-347