. The Ceratopsia. Ceratopsia. TEICEEATOPS PROESUS. 129 nearly circular orbit; (4) the position of the infraorbital foramen below the superior border of the ascending branch of the maxillary, as in Sterrholophus flabellatus. Viewed from the side, the facial region of the skull of the present species appears long and the parietal crest proportionally abbreviated, presenting the opposite conditions from those which obtain in the genus Torosaurus, where the parietal crest is greatly elongated and the frontal region much abbreviated. The superior surface of the region between the supraorbital horn
. The Ceratopsia. Ceratopsia. TEICEEATOPS PROESUS. 129 nearly circular orbit; (4) the position of the infraorbital foramen below the superior border of the ascending branch of the maxillary, as in Sterrholophus flabellatus. Viewed from the side, the facial region of the skull of the present species appears long and the parietal crest proportionally abbreviated, presenting the opposite conditions from those which obtain in the genus Torosaurus, where the parietal crest is greatly elongated and the frontal region much abbreviated. The superior surface of the region between the supraorbital horn cores and the posterior border of the frill is strongly concave, though this condition has doubtless been somewhat accentuated by crushing. A rather sharp and elevated ridge marks the middle lines, displaying a series of three small rugose elevations. The jugal is directed downward and slightly backward and is firmly coossified with the epijugal. The union between these elements and the quadratojugal is less complete, though these are coossified below, while the suture between the jugal and quadratojugal is left open above throughout fully two-thirds of its length. The quadratojugal notch is deep and narrow, more so than in any other skull known to the writer. The squamosal is proportionally broad and short and bears seven epoccipitals. The smallest of these is at the anteroinferior angle, which is rather less promi- nent than in most other species of the family. The posterior border of the frill is incomplete and it is therefore impossible to determine with accuracy the number of epoccipitals borne by. Please note that these images are extracted from scanned page images that may have been digitally enhanced for readability - coloration and appearance of these illustrations may not perfectly resemble the original Hatcher, J. B. (John Bell), 1861-1904; Lull, Richard Swann, 1867-1957; Osborn, Henry Fairfield, 1857-1935; Marsh, Othniel Charles, 1831-1899. Washington, Govt.
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