Monoclonius was a herbivore. It lived in the Cretaceous period and inhabited North America. Its fossils have been found in places such as Coahuila (Mexico), Montana and Alberta (Canada).

Quick facts about Monoclonius:

  • Existed from 83.6 million years ago to Maastrichtian Age
  • Lived in a terrestrial habitat
  • Was a herbivore
  • Reproduced by laying eggs
  • Had a body mass of approximately 1833.6 kg
  • 15 different specimens have been found by paleontologists

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

Monoclonius was described by the following scientific paper(s):
  • B. Brown. 1914. Cretaceous Eocene correlation in New Mexico, Wyoming, Montana, Alberta. Bulletin of the Geological Society of America 25:355-380
  • C. M. Sternberg. 1938. Monoclonius from southeastern Alberta compared with Centrosaurus. Journal of Paleontology 12(3):284-286
  • E. D. Cope. 1889. The horned Dinosauria of the Laramie. The American Naturalist 23:715-717