Keywords: Triceratops prorsus old skull003.png en Part of the skull of Triceratops Triceratops prorsus Postorbital horn core brow horns Orbital eye socket Parietal Epoccipitals scallops Squamosal Nasal horn core nose horn Nasal Nostrail Premaxilla Rostral Predentary Maxilla Dentary Coronoid Jugal Epijugal 2011-05-20 File Triceratops prorsus old skull001 png Charles Othniel Marsh processed by User MathKnight and Zachi Evenor PD-old-100 PD-US Uploaded with UploadWizard Triceratops skulls Triceratops on white background Dinosauria skeletal diagrams |