AM. JOURN. SCI., Vol. XIX, 1880. Plate VI. 
eee 
TRO Re eerewesemannene” 
Figure 1 Pages Ne skull and brain-cast of Stegosaurus ungulatus, es see 
from e-half natural size; ol, olfactory lobes; c¢, ce ig Pees 
; optic nerve; cd, cerebellum; m, cone W & 
Figure 2.—Same brain-cast; side view, one-half natural si 
7 data 3.—Brain-cast of youn Aiea gg oe pee natural size. 
waar 4, eae xillary teeth of Stegosaurus armatus, Marsh; side view, one-half 
size; e, enamel; 
Figure 5-—Secti n of maxillary of Stegosaurus armatus; showing functional 
n. position, and five ney wet Basige in ‘dental cavity; a, outer 
valk b, inner wall; c, cavity; f, fo 
