12 
Dinosauria — Pelorosaurus. 
Ornithopsis. 
Wall-case, 
No. 3. 
Pelorosau- 
rus. 
It seems almost certain tliat the detached tooth described as 
Hoplosaurus armatus , and the cervical and dorsal vertebras and 
pelvis, described under the names of Ornithopsis Hulhei and 
0. encamerotus , are referable to the same form. The head in 
Brontosaurus , with which genus 0 rnithopsis has been compared, 
was very diminutive in comparison with the size of its huge 
vertebrae and limb-bones (see Fig. 13). 
Fig. 14.— (a) inner ; (6) outer; (c) proQle views of a tooth of Hoplosaurus armatus (Gervais), 
from the Wealden of the Isle of Wight, 
Pelorosaurus , another large land Saurian of the Wealden 
period, is referred to this sub-order. It probably exceeded, in 
size the largest Iguanodons, and is represented in the Collection 
bv the humerus, -which is 52 inches in length. 
Another humerus noticed above (p. 10) as having been 
referred to Cetiosaurus humerocristatus , by Hulke, probably 
belongs to this same genus. The cast of a vertebra from the 
Oxford Clay, near Peterborough, also may be referred to another 
species of this genus, and is remarkable for its large size. 
