Temporal range: Middle Jurassic 166–164 mya
Cetiosauriscus is a sauropod dinosaur that lived between 166 and 164 million years ago during the Middle Jurassic in what is now England. The fossil was originally confused with Cetiosaurus, a similar sauropod. 
Cetiosauriscus was discovered in May 1898 by clay workers south of Peterborough and east of the Great Northern Railway. Pits in this region expose the fossil-rich sedimentary rocks of the marine Oxford Clay, which is one of the classic geological formations of British palaeontology.
References[change | change source]
- Charig A.J. 1980. A diplodocid sauropod from the Lower Cretaceous of England. In Jacobs L.L. Aspects of Vertebrate History: Essays in Honor of Edwin Harris Colbert. Museum of Northern Arizona Press, pp. 231–244. ISBN 978-0-897-34053-3
- Smith, J.B. (1997). "Oxford Clay". In Currie, P.J.; Padian, K. (eds.). Encyclopedia of Dinosaurs. pp. 509–510. ISBN 978-0-12-226810-6.