2024年10月18日 · Triceratops, (genus Triceratops), large quadrupedal plant-eating ceratopsian dinosaur that had a frill of bone at the back of its skull and three prominent horns. Fossils of “three-horned face,” as its Latin name is usually translated, date to the final 3 million years of the Cretaceous Period (145.5 million to 65.5 million years ago), making it one of the last of the non-avian dinosaurs ...