198 Professor Marsh’s Monograph of the Dinocerata. 
“The neck was long enough to permit the head to reach the 
ground, and hence a proboscis was quite unnecessary. The 
horizontal narial opening, the long overhanging nasal bones, and 
the well developed turbinal bones, are likewise proof positive 
against the presence of such an organ. ere is some evidence 
of a thick flexible lip, resembling, perhaps, that of the existing 
rhinoceros. 
“The remarkably small brain, and the heavy massive limbs, 
indicate a dull, slow-moving animal, little fitted to withstand 
marked changes in its environment, and hence it did not sur- 
vive the alterations of climate with which the Eocene period 
osed., 
“Both the animals chosen for these two restorations were 
_ evidently males, as shown by the lofty protuberances, or horn- 
cores, on the skull, and the powerful canine tusks. In the 
females, these parts are but feebly developed, as shown in the 
specimens described in the preceding chapters. The individ- 
uals here restored were certainly thrice-armed, and well fitt 
to protect themselves, and their weaker associates, from any of 
their Eocene enemies. 
“The exact form and nature of the offensive weapons which 
surmounted the head of the Dinocerata cannot, at present, be 
determined with certainty. That the paired osseous elevations 
seen on the skull in all the known species of this group did not 
support the kind of horns seen in the typical Ruminants 1 
evident from their external surface, which lacks the vascular 
grooves so distinct on the horn-cores of those animals. 
“Possibly, the Dinocerata may have been armed with horns 
similar to those seen in the American antelope Antilocapr®); 
since, in this animal, the horn-cores are even smoother than in the 
order here described. More probably, however, the bony pro 
the Oreodon is sometimes thus clearly indicated in the fine 
Miocene matrix which occasionally enyelops these animals. 
“The short robust feet of the Dinocerata were doubtless 
covered below with a thick pad, as in the elephant, since the 
whole under side of the foot clearly indicates such a protectio. 
No portion of this covering has been preserved in any 0 
own specimens, and no foot-prints indicating its form, have 
been discovered, in the Eocene deposits in which the Dino” 
erata were entombed.” 
[3 
