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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 



47 mm. 45 mm 

 125 mm. 145 mm 

 105 mm. 100 mm 



75 mm. 



22 mm. 



45 mm. 

 132 mm. 

 105 mm. 



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. 



SPECIMEN GAUDRY'S 

 No. 3218 SPECIMEN 



Humerus, total length 470 mm. 



Humerus, width at proximal end 232 mm. 



Humerus, width at middle of shaft 165 mm. 



Humerus, antero-posterior diam. of shaft 61 mm. 



Humerus, width across epicondylcs 230 mm. 240 mm 



500 mm. 

 232 mm. 

 170 mm. 



We found neither the radius nor the ulna, but Gaudry 

 figures both, giving the following measurements. 



Radius, length 245 mm. 



Radius, proximal diam. 127 mm. 



Ulna, length (calculated) 280 mm. 



Ulna, width of olecranon 140 mm. 



