Professor Marsh’s Monograph of the Dinocerata. 183 
f 
Figure 10,—g) low. 
F = re “ Tinoceras ingens, Marsh ; seen from be 
PRE 11.—Skull of Dinoceras mirabile, 3 Marsh ; seen from below. Both figures 
i d, 
a ora’ orbita 
palatine rome : e, posterior nares; f, foraanen magnum; / 
occipital sey 9; stylo-mastoid me : me 
posterius ; 7, vascular foramen in basisphe ts a, gt ee 
ing 0 falisphenoid canal; k, anterior coauie of alisphenoi 
I, optic foramen 
“The lachrymal is larve. and forms the wag 8 border of 
= orbit. Tt is sire by a large foramen In Dino The 
Mfabile, this is oval in out ine, with the apex above. of 
~~ of the lachrymal is excavated for the posterior 2288 ing 
large antorbital foramen. 
