Leptocleidus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs.
All these Leptocleidus pictures were collected from the internet. Enjoy and explore:
- J. A. Long and A. R. I. Cruickshank. 1996. First record of an Early Cretaceous theropod dinosaur bone from Western Australia. Records of the Western Australian Museum 18:219-222
- A. Bartholomai. 1966. The discovery of plesiosaurian remains in freshwater sediments in Queensland. The Australian Journal of Science 28(11):437
- B. P. Kear. 2007. A juvenile pliosauroid plesiosaur (Reptilia: Sauropterygia) from the Lower Cretaceous of South Australia. Journal of Paleontology 81(1):154-162