Rhomaleosaurus was a plesiosaur, a type of marine reptile. It was not a dinosaur, though it coexisted with many dinosaurs. The first Rhomaleosaurus fossil was discovered in 1871.

Quick facts about Rhomaleosaurus:

  • Existed from Rhaetian Age to 174.1 million years ago
  • Lived in a marine environment
  • Was a carnivore
  • Reproduced by live birth
  • 15 different specimens have been found by paleontologists

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

Rhomaleosaurus was described by the following scientific paper(s):
  • R. Tate and J. F. Blake. 1876. The Yorkshire Lias
  • R. Owen. 1840. Report on British fossil reptiles. Report of the British Association for the Advancement of Science 8:43-126
  • T. Wright. 1860. On the Zone of Avicula contorta, and the Lower Lias of the South of England. Quarterly Journal of the Geological Society 16:374-411