Ceratopsia

† Ceratopsia was the major clade of horned, frilled ornithischian dinosaurs ranging from the Late Jurassic through the end-Cretaceous extinction. Beginning as small, bipedal herbivores in Asia — as suggested by Early Cretaceous material from Thailand — the group evolved into the iconic horned giants of the North American Late Cretaceous. All ceratopsians possessed a rostral bone forming a characteristic beak, and most had some degree of frill development. The clade encompasses over 100 named genera worldwide.

Diet & Feeding

Herbivore

Ceratopsia was a plant-eating dinosaur. Herbivores typically fed on ferns, cycads, conifers, and other vegetation available during their era. Many herbivorous dinosaurs developed specialized teeth and digestive systems for processing tough plant material.

Time Period

Cretaceous Early Mesozoic Era

Ceratopsia lived during the Cretaceous Early period of the Mesozoic Era, approximately 145.0 to 100.5 million years ago.

The Cretaceous saw continued dinosaur evolution with the rise of ornithopods and early ceratopsians. Flowering plants first appeared and began to transform terrestrial ecosystems. Spinosaurus and other large theropods lived during this time.