NO. 8 MAMMALIAN FAUNA, BADWATER AREA — GAZIN 29 



MEASUREMENTS IN MILLIMETERS OF DENTITIONS IN SPECIMENS OF 



Protoreodon pearcei and Diplobtinops, CF. matthezvi 



D., cf. matthezvi P. pearcei 



, * , U.S.N.M. 



U.S.N.M. U.S.N.M. No. 



No. No. 2030s 



20304 20303 Type 

 Length of upper dentition, C (at alveolus) - 



M^ inclusive 96.5 90.5 



Length of upper dentition, P*-M^ inclusive 83.0 74.0 



Upper premolar series, P'-P*, inclusive 44.0 36.5 



Upper molar series, M^-M^ inclusive 39.5 40.0" 39.6 



C, anteroposterior diameter (at alveolus) : 



greatest transverse diameter 7.7:7.1 11.0:8.7 



P*, anteroposterior diameter : greatest trans- 

 verse diameter 9.0 : 3.8 7.7 : 4.3 



P', anteroposterior diameter : greatest trans- 

 verse diameter 9.6:5.9 10.3:6.4 11.1:6.5° 



P^ anteroposterior diameter : transverse di- 

 ameter * 10.2:10.2 10.3:9.8 11.1:9.5 



P^ anteroposterior diameter : transverse di- 

 ameter 10.1:12.3 10.0:12.9 10.2:12.5 



M\ anteroposterior diameter : transverse di- 

 ameter* 12.8:15.1 12.0": — 12.5:13.5 



M', anteroposterior diameter : transverse di- 

 ameter 13.8:16.6 13.8:17.5 13.7:16.6 



^r, anteroposterior diameter : transverse di- 

 ameter 13.7:18.0 14.0": 19.5" 15.0:18.3 



Length of lower cheek tooth series. Pi (at 



alveolus) -M3, inclusive 82.5 



Length of lower premolar series, Pi (at 



alveolus)-P4, inclusive 43.2 38.3 



Length of lower molar series, M1-M3, in- 

 clusive 44.0 



Pi, anteroposterior diameter (at alveolus) : 



greatest transverse diameter lo.o : 8.3 



Ps, anteroposterior diameter : greatest trans- 

 verse diameter 10.0:5.3 9.5:4.6 



P3, anteroposterior diameter : greatest trans- 

 verse diameter 11.0:7.0 10.8:6.2 



Pi, anteroposterior diameter : greatest trans- 

 verse diameter 12.2:8.0 11.5:7.2 



Mi, anteroposterior diameter : transverse di- 

 ameter of talonid 10.9 : 8.1 



Ms, anteroposterior diameter : transverse di- 

 ameter of talonid 14.4:11.3'' i3-0'':9.3 



M3, anteroposterior diameter : transverse di- 

 ameter of trigonid — : 10.7 20.3 : 10.4 



" Approximate. 



• Measurements of posterior upper premolars are taken anteroposteriorly across outer 

 portion and transversely perpendicular to outer margin. Those of upper molars are taken 

 anteroposteriorly perpendicular to anterior margin and transversely across anterior portion 

 of tootb, lingually to base of enamel or cingulum. 



