In Depth
Ctenorhachis is a genus of sphenacodont that lived in North America during the Permian. Although the skull of Ctenorhachis is unknown, the available fossil material for the genus show that Ctenorhachis was a sphenacodontid. So far all members of the Sphenacodontidae were predators in life, so by extension we can conclude that Ctenorhachis would have been a predator as well.
Further Reading
- A New Sphenacodontid Pelycosaur (Synapsida) from the Wichita Group, Lower Permian of North-Central Texas. - Journal of Vertebrate Paleontology 11(1):37-44. - R. W. Hook & N. Hotton - 1991.