cerato-, cerat-, kerato-, kerat-, ker-, kera-, kerat-

(Greek: horn, horny tissue; cornea)

megaceros
rhinoceros
1. A very large herbivorous mammal with very thick skin and one or two horns on its snout.
2. A large, unwieldy quadruped of a genus now found only in Africa and Southern Asia, having a horn (or, in some species, two horns) on the nose and a very thick skin disposed in plates and folds. [It should be noted that the rhinoceros “horn” is really not composed of horn at all, but is hard hair].
tetracerous
triceratops
A genus of gigantic predentate dinosaurs of the family Ceratopsidae, having a strong nasal horn, besides two large pointed horns above the eyes; found in the Laramie beds of the United States.