Leptocleidus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. The first Leptocleidus fossil was discovered in 1922.

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

Leptocleidus was described by the following scientific paper(s):
  • A. Bartholomai. 1966. The discovery of plesiosaurian remains in freshwater sediments in Queensland. The Australian Journal of Science 28(11):437
  • A. W. Rogers and E. H. L. Schwarz. 1901. Report on the survey of parts of the Uitenhage and Port Elizabeth divisions. Annual Report of the Geological Commission, Cape of Good Hope 1900:3-18
  • B. P. Kear, N. I. Schroeder, and M. S. Y. Lee. 2006. An archaic crested plesiosaur in opal from the Lower Cretaceous high-latitude deposits of Australia. Biology Letters 2:615-619