1893.) The Titanotherium Beds. 219 
skull from the Upper beds with the'characteristic long horn- 
cores and short nasals. The nasals are not -sọ short in this 
Fic. 1. 
S nea 
Titanotherium acre, py Cope. 
Fic. 2. 
Titanotherium ingens Marsh; yy (After Marsh). 
Fic. 3. 
Titanotherium heloceras Cope ; tz (After Marsh). 
skull as in many others. The figures are drawn to the same 
scale, one-twelfth natural size, and represent well the increase 
