| The earliest fossils of Triceratops are about 72 million years old. Triceratops was a plant eater. Its sharp beak cut through vegetation, while the teeth behind easily sheared tender leaves. Triceratops and other horned dinosaurs probably traveled and foraged in herds. Like most kinds of dinosaurs and a number of other prehistoric forms, it suddenly became extinct toward the end of the Cretaceous Period, about 65 million years ago. |