PLATE XXXIV. 



SKULL OF TYPE OF TRICERATOPS PRORSUS MARSH. 



(See p. 127.) 



Plate prepared under the direction of Marsh. 



Type specimen, No. 1822, Yale University Museum. Left lateral view. 



ang, angular. o, orhit. 



art, articular. pa, parietal. 



cp, coronoid process. pf, postfrontal. 



d, dentary. prf, prefrontal. 



ej, epijugal. pmx, premaxillary. 



ep, epoccipital. qj, quadratojugal. 



ju, jugal. . qu, quadrate. 



If, lachrymal foramen. r, rostral. 



mx, maxillary. sang, surangular. 



nas, nasal. sq, squamosal. 



rih, nasal horn cere. soh, supraorbital horn core. 

 no, nasal opening. 



One-fourth natural size. 



266 



