\ 
20 
Measurements of Vertebrce Mm 
Axis, length of centrum 80 
" greatest height over all 165 
Third cervical, length of centrum 60 
“ “ greatest height over all 130 
Seventh “ length of centrum 95 
“ “ greatest height over all 154 
Twelfth “ length of centrum 100 
“ " greatest height over all 187 
Second dorsal, “ “ “ 260 
Seventh “ “ « “ 305 
“ “ length of centrum 105 
Twelfth “ length of centrum 100 
“ “ greatest height over all 375 
Fifteenth “ length of centrum 80 
“ “ greatest height over all 410 
Nineteenth “ length of centrum 70 
“ “ greatest height over all 420 
Ninth sacral, length of centrum 95 
“ “ greatest height over all 445 
Fourth caudal, “ “ 455 
“ “ length of centrum 70 
Length of twelve cervical vertebrae 920 
“ twenty dorsal vertebrae, about 2050 
Length of nine sacral vertebrae 760 
“ fifth dorsal rib (left side) 1108 
Fore Limb and Feet 
The fore limb of Thespesius edmontoni is relatively longer than in any 
known specimen of T. annedens (Marsh), as may be seen in the table of 
comparative measurements. Though the skull is smaller in all dimensions, 
a proportion that largely prevails throughout the skeleton, the fore limb 
is longer. This feature, combined with structural differences found in the 
manus, is regarded as indicating the specific distinctness of this specimen 
from the Lance T. annectens, with which it has the closest affinities. 
The scapulae are large, with a straighter blade in relation to the prox- 
imal end and having a more squarely truncated upper extremity than 
found in T. annectens . The humeri are much crushed and there is a 
considerable difference in the length of the two bones. The right element 
has a length over all of 560 mm., whereas the left measures 615 mm. It is 
thought that some of the distal extremity is missing in the former, whereas 
the latter has been unduly lengthened either by crushing or unwarranted 
restoration. An average of the two extreme measurements would probably 
be closer to the correct dimensions of these bones. The humeri have the 
usual prominent radial crest. 
The radius and ulna are especially elongated, exceeding in length any 
known specimen of T. annectens. In their exaggerated breadths both show 
the effect of crushing. 
The fore feet have been described 1 in detail by Lambe, from whose 
description the following extracts have been made: “In removing the rock 
particular care has been taken to keep each bone in the exact position in 
which it was found, so that any observer of the mounted skeleton, or any 
reader of this paper, with the aid of the illustrations provided, would be 
in a position to interpret for himself the phalangial formula presented. 
This policy of non-disturbance of the bones has been carried out in the 
preparation of the entire skeleton.” 
1 Ottawa Naturalist, vol. 27, May, 1913, pp. 22-25. 
