Polyonax was a herbivore. It lived in the Cretaceous period and inhabited North America. Its fossils have been found in places such as Colorado.

Quick facts about Polyonax:

  • Existed from 93.5 million years ago to Maastrichtian Age
  • Lived in a terrestrial habitat
  • Was a herbivore
  • Reproduced by laying eggs
  • 630 different specimens have been found by paleontologists

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

Polyonax was described by the following scientific paper(s):
  • E. D. Cope. 1874. Report on the stratigraphy and Pliocene vertebrate paleontology of northern Colorado. Bulletin of the United States Geological and Geographical Survey of the Territories 1(1):9-22