SINCLAIR: MARSUPIALIA OF THE SANTA CRUZ BEDS. 



373 



Palate, width between M. . . . . 



Mandible, length .......... 



" " Mj to outer end of condyle . . . . . 



" height of coronoid process above angle .... 



" " " condyle above angle ...... 



" depth of horizontal ramus below M T . . . . . 



" " " " " posterior premolar . 



Upper dentition, length of space occupied by molars . 

 Lower " " from anterior border of canine to M ( inclusive. 



" " " of space occupied by molars . . . 



" " " " " " premolars 



Posterior superior premolar, antero-posterior diameter 



" " transverse 



M-L, antero-posterior diameter . . . . . 



" transverse diameter ......... 



M^, antero-posterior diameter ........ 



" transverse diameter ......... 



M, antero-posterior diameter ........ 



" transverse diameter . . . . . 



MA, 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 . . . . 



Mj, antero-posterior diameter ..... 



" transverse diameter ...... 



Mj, antero-posterior diameter .... 



" transverse diameter ..... 



Mj, 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 



.0078 



.003 



.0095 



.0045 



.0095 



.0046 



.010 



.005 



.011 



.0055 



.0125 



.0065 



.015 

 .008 

 .079 

 .017 

 .0115 



053 

 .012 

 .036 

 .013 

 .020 

 .028 



