Named By: N. R. Longrich, B. -A. S. Bhullar & J. A. Gauthier - 2013.
Classification: Chordata, Reptilia, Opihidia, Serpentes, Alethinophidia.
Species: C. robustus (type).
Known locations: USA, Montana - Hell Creek Formation.
Time period: Maastrichtian of the Cretaceous.
Fossil representation: Unavailable.
Not a lot of information is available about this snake, but aside from dinosaurs, it would have shared its habitat with other reptiles such as lizards like Obamadon, Leptochamops and Palaeosaniwa.
- Mass extinction of lizards and snakes at the Cretaceous–Paleogene boundary, Nicholas R. Longrich, Bhart-Anjan S. Bhullar & Jacques A. Gauthier - 2013.