PLATE XXX. 



SKULL OF TRICERATOPS PRORSUS ? MARSH. 



(See pp. 190-191.) 



Plate prepared under the direction of Hatcher. 



Specimen No. 2100, U. S. National Museum. (Skull of mounted skeleton.) Left lateral View. 



ep, epoccipital. pa, parietal. 



]u, jugal. pmx, premaxillary. 



If, lachrymal foramen. . qj, quadratojugal. 



rax, maxillary. qu, quadrate. 



nas, nasal. S q, squamosal. 



rill, nasal horn core. soh, supraorbital horn core. 

 o, orbit. 



One-eighth natural size. 

 258 



