182 THE DESEADO FORMATION OF PATAGONIA 
Atlas, antero-posterior length (without hypophysis) 
Atlas, greatest width 
Atlas, height 
Axis, antero-posterior length 
Axis, greatest width 
Axis, width of odontoid process 
Axis, length of odontoid process 
Cervical 3, length of centrum antero-posterior 
Cervical 3, width of centrum 
Cervical 3, height of centrum 
Cervical 3, width of neural canal 
Cervical 3, height of neural canal 
Cervical 4, length of centrum antero-posterior 
Cervical 4, width of centrum 
Cervical 4, height of centrum 
SPECIMEN GAUDRY’S 
3344 
120 mm. 
304 mm. 
129 
mm, 
SPECIMEN 
3207 
116 
22 
96 
48 
47 
125 
105 
os) 
22 
45 
132 
105 
mm. 
mm. 
mm. 
mm. 
mm. 
mim. 
mm. 
mm, 
mm, 
mm. 
mm. 
mm, 
140 
365 
140 
124 
248 
88 
44 
45 
145 
100 
SPECIMENS 
Inm. 
mm. 
mm. 
mm. 
mm. 
mm. 
mm. 
mm. 
mm. 
mim. 
The humerus is flattened from front to back in a striking 
manner, so that, seen from the side, it looks most slender; 
while in reality it is a very broad bone, nearly straight, 
and with marked rugosities for the attachment of the 
muscles. We found but one specimen of the humerus, an 
isolated bone a little smaller than that described by Gaudry. 
Humerus, total length 
Humerus, width at proximal end 
Humerus, width at middle of shaft 
Humerus, antero-posterior diam. of shaft 
Humerus, width across epicondyles 
SPECIMEN 
No. 
470 
232 
165 
6I 
230 
3218 
mm. 
mim. 
mm. 
mm. 
mm. 
GAUDRY’S 
SPECIMEN 
500 
232 
170 
mim. 
mm. 
mm. 
mm, 
We found neither the radius nor the ulna, but Gaudr 
) 
figures both, giving the following measurements. 
Radius, length 
Radius, proximal diam. 
Ulna, length (calculated) 
Ulna, width of olecranon 
245 
127 
280 
140 
mm. 
mm, 
mm. 
mm, 
