PLATE XXXVI. 



SKULL OF TYPE OF TRICERATOPS PRORSUS MARSH, 



(See p. 127.) 



Plate prepared under the direction of Marsh. 



Type specimen, No. 1822, Yale University Museum. Inferior view. 



bo, basioc.cipital. pmx, premaxillary. 



ej, epijugal. pi, pterygoids. 



ep, epoccipital. qj, quadratojugal. 



exo, exoccipital. qu, quadrate. 



ju, jugal. r, rostral. 



rnx, maxillary. soh, supraorbital horn core. 



oc, occipital condyle. sq, squamosal. 



pa, parietal. vo, vomer. 



One-fourth natural size. 



270 



