80 



BULKETIN 171, UNITED STATES NATIONAL MUSEUM 



Table 22. — Measurements {in millimeters) of skull, mandible, and dentition of 

 Platygonus cumberlandensis 



Measurement 



U.S.N.M. 

 no. 8146 

 (type) 



U.S.N.M. 



no. 8200 

 (paratype) 



Skull 

 Extreme length of skull 



Total basal length measured from condylar notch 



Posterior border of orbit to posterior border of inion 



Anteroposterior diameter of orbit -- 



Anterior border of orbit to extreme end of premaxillary. 



Depth of skull at condyles.- 



Depth of skull at glenoid fossa 



Greatest breadth of zygomatic expansion below orbit... 



Greatest width of skull across zygomae 



Width of face at middle of orbits 



Width of face at postorbital processes 



Width of face above infraorbital foramen 



Width of palate between canines 



Width of palate just anterior to P' - 



Width of palate between second premolars 



Width of palate between second molars 



Distance across first pair of molars. 



Length of diastema between C and I' 



Length of diastema behind canine.. - 



Superior dentition 



Total length of upper dental series.. 

 Length of upper cheek tooth series. 

 Length of upper premolar series — 



I', anteroposterior diameter 



I', transverse diameter.. 



I*, anteroposterior diameter 



I', transverse diameter.. 



C, anteroposterior diameter 



C, transverse diameter , 



P>, anteroposterior diameter , 



P', transverse diameter.. 



P', anteroposterior diameter 



P', transverse diameter 



P*, anteroposterior diameter 



P*. transverse diameter 



M', anteroposterior diameter 



M', transverse diameter 



M', anteroposterior diameter 



M', transverse diameter.. 



M', anteroposterior diameter 



M', transverse diameter 



Mandible 



Total length of lower Jaw, condyle to tip of incisors. 



Depth of lower jaw at Mi.. 



Depth of jaw at coronoid process 



Depth of lower jaw at condyle 



Width between alveoli of lower canines. 



Depth of symphysis in median line— 



Depth of symphysis at mental foramen 



Length of symphysis in front (in straight line) 



Length of diastema between I2 and C 



Length of diastema behind canine (straight line) — 



420 



360 



125 



140 



270 



140 



1 130 



84 



230 



135 



140 



51 



SO 



45 



29 



22 



61 



26 



65 



214 

 94.5 

 35.2 



8.7 



20 

 12 

 11.7 

 11.3 

 11.7 

 13.5 

 11.7 

 14.3 

 15.2 

 16 



19.6 

 18 



24.5 

 18.2 



20 

 31 

 48 



100 

 4 



>76 



' Approximate. 



