lifestyle, likely living in swamps and marshes like a hippopotamus, although it was not closely related to modern hippos or any other animal known today. Coryphodon had very strong neck muscles and short tusks that were probably used to uproot swamp plants. The other teeth in the mouth were suited for processing plants that had been grabbed by browsing.

Fossils found on Ellesmere Island, near Greenland, show that Coryphodon once lived there in warm swamp forests