Caenagnathus was a unknown. It lived in the Late Cretaceous period and inhabited North America. Its fossils have been found in places such as Alberta (Canada) and South Dakota (United States).

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

Caenagnathus was described by the following scientific paper(s):
  • J. M. Wood, R.G. Thomas, and J. Visser. 1988. Fluvial processes and vertebrate taphonomy: the Upper Cretaceous Judith River Formation, south-central Dinosaur Provincial Park, Alberta, Canada. Palaeogeography, Palaeoclimatology, Palaeoecology 66:127-143
  • G. F. Funston, W. S. Persons, IV, and G. J. Bradley, P. J. Currie. 2015. New material of the large-bodied caenagnathid Caenagnathus collinsi from the Dinosaur Park Formation of Alberta, Canada. Cretaceous Research 54(1):179-187
  • J. R. Horner and D. Lessem. 1993. The Complete T. rex. New York: Simon & Schuster.