*Ceratopsians (Ceratopsia):The largest ceratopsians were "Triceratops" and its ancestor "Eotriceratops" from the late Cretaceous of North America.
*Ceratopsians (Ceratopsia):The largest ceratopsians were "Triceratops" and its ancestor "Eotriceratops" from the late Cretaceous of North America.