80 Saurians of the Dakota Beds of Colorado. [ February, 
The dimensions of this animal may be inferred from the fact 
that the cervical vertebra is twenty inches in length and twelve 
in transverse diameter; and that one of the dorsals measures 
three and a half feet in the spread of its diapophyses, two and a 
half feet in elevation, and the centrum thirteen inches in transverse 
diameter. Another dorsal is two feet ten inches in elevation. 
The femur already mentioned is six feet, and the scapula five 
ees 
Fig. 13. Fig. 14. 
Fig. a vertebra of Amphicelias altus seen from behind, exhibiting the 
hen ; 
Fig. 14-—The vertebra represented in Fig. 13 seen from the right side, brag st 
the excavaticns of the neural arch and spine, and the a foramen of the 
centrum, 
and a half feet in length. The posterior dorsal vertebra exceed | 
