Sinclair: marsupialia of the santa cruz beds. 
373 
Palate, width between MA .... 
Mandible, length ...... 
u “ Mj to outer end of condyle . 
“ height of coronoid process above angle 
“ “ “ condyle above angle . 
“ depth of horizontal ramus below . 
“ “ “ “ “ “ posterior premolar 
Upper dentition, length of space occupied by molars . 
Lower “ “ from anterior border of canine to Mj inclusive 
“ “ “ of space occupied by molars . 
a a a a a a a pi-emolars 
Posterior superior premolar, antero-posterior diameter 
“ “ “ transverse 
Mi, antero-posterior diameter 
“ transverse diameter . 
Mi, antero-posterior diameter 
“ transverse diameter . 
Mi, antero-posterior diameter 
“ transverse diameter . 
Mi, antero-posterior diameter 
“ transverse diameter . 
Lower canine, antero-posterior diameter at base 
“ “ transverse diameter at base 
Anterior inferior premolar, antero-posterior diameter 
“ “ “ transverse diameter 
Median “ “ antero-posterior diameter 
“ “ “ transverse diameter 
Posterior “ “ antero-posterior diameter 
“ “ “ transverse diameter 
Mp antero-posterior diameter 
“ transverse diameter . 
M^, antero-posterior diameter 
“ transverse diameter . 
My, antero-posterior diameter 
“ transverse diameter . 
M ? , antero-posterior diameter 
“ transverse diameter . 
Atlas, transverse breadth . 
“ width of neural arch 
“ “ “ inferior arch 
Axis, length of centrum, including odontoid process 
“ “ “ odontoid process 
“ width across anterior cotyles 
“ depth of posterior face of centrum 
“ width “ “ “ “ 
Third cervical, length of centrum 
.060 
•1655 
■0755 
.075 
•033 
.030 
.024 
.042 
.090 
.048 
.026 
.010 
.005 
.0105 
.008 
.0125 
.0095 
•0135 
.012 
.005 
.009 
.012 
.008 
.OO78 
.003 
.0095 
.OO45 
.0095 
.OO46 
.OIO 
.005 
.OI I 
.0055 
.0125 
.OO65 
.015 
.008 
.079 
.017 
.0115 
•053 
.012 
.036 
.013 
.020 
.028 
